View MAX2839_9119202.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

general description the MAX2839 direct conversion, zero-if, rf transceiver is designed specifically for 2ghz 802.16e mimo mobile wimax ? systems. the device incorporates one transmit - ter and two receivers, with > 40db isolation between each receiver. the MAX2839 completely integrates all circuitry required to implement the rf transceiver function, pro - viding rf to baseband receive path, and baseband to rf transmit path, vco, frequency synthesizer, crystal oscillator, and baseband/control interface. the device includes a fast-settling sigma-delta rf synthesizer with smaller than 40hz frequency steps and a crystal oscil - lator that allows the use of a low-cost crystal in place of a tcxo. the transceiver ic also integrates circuits for on-chip dc-offset cancellation, i/q error, and carrier leakage detection circuits. an internal transmit to receive loopback mode allows for receiver i/q imbalance calibra - tion. the local oscillator i/q quadrature phase error can be digitally corrected in approximately 0.125 steps. only an rf bandpass filter (bpf), crystal, rf switch, pa, and a small number of passive components are needed to form a complete wireless broadband rf radio solution. the MAX2839 completely eliminates the need for an external saw filter by implementing on-chip program - mable monolithic filters for both the receiver and transmit - ter, for all 2ghz and 802.16e profiles and wibro. the baseband filters along with the rx and tx signal paths are optimized to meet the stringent noise figure and lin - earity specifications. the device supports up to 2048 fft ofdm and implements programmable channel filters for 3.5mhz to 20mhz rf channel bandwidths. the trans - ceiver requires only 2s tx-rx switching time. the ic is available in a small 56-pin tqfn package measuring 8mm x 8mm x 0.8mm. applications 802.16e mobile wimax systems korean wibro systems proprietary wireless broadband systems 802.11g or n wlan with mrc or mimo down link beneits and features 2.3ghz to 2.7ghz wideband operation dual receivers for mimo, single transmitter complete rf transceiver, pa driver, and crystal oscillator ? 2.3db rx noise figure on each receiver ? -35db rx evm for 64qam signal ? 0dbm linear ofdm transmit power (64qam) ? -70dbr tx spectral emission mask ? -35dbc lo leakage ? automatic rx dc offset correction ? monolithic low-noise vco with -39dbc integrated phase noise ? programmable rx i/q lowpass channel filters ? programmable tx i/q lowpass anti-aliasing filters ? sigma-delta fractional-n pll with < 40hz step ? 62db tx gain control range with 1db step size, digitally controlled ? 95db rx gain control range with 1db step size, digitally controlled ? 60db analog rssi instantaneous dynamic range ? 4-wire spi digital interface ? i/q analog baseband interface ? digital tx/rx mode control ? digitally tuned crystal oscillator ? on-chip digital temperature sensor readout +2.7v to +3.6v transceiver supply low-power shutdown current small, 56-pin tqfn package (8mm x 8mm x 0.8mm) pin configuration and block diagram/typical operating circuit appear at end of data sheet. 19-3218; rev 2; 7/15 wimax is a registered certification mark and registered service mark of the wimax forum. +denotes a lead(pb)-free/rohs-compliant package. t = tape and reel. *ep = exposed pad. d = dry pack. part temp range pin-package MAX2839etn+td -40c to +85c 56 tqfn-ep* MAX2839 2.3ghz to 2.7ghz mimo wireless broadband rf transceiver ordering information evaluation kit available downloaded from: http:///
v cc_ pins to gnd.................................................-0.3v to +3.6v rf inputs: rxina+, rxina-, rxinb+, rxinb- to gnd............................................ac-coupled only rf outputs: txout+, txout- to gnd.................-0.3v to +3.6v analog inputs: txbbi+, txbbi-, txbbq+, txbbq- to gnd................................................-0.3v to +3.6v analog input: refclk, xtal1........................-0.3v to +3.6v p-p analog outputs: rxbbia+, rxbbia-, rxbbqa+, rxbbqa-, rxbbib+, rxbbib-, rxbbqb+, rxbbqb-, cpout+, cpout-, pabias, rssi to gnd.......................-0.3v to +3.6v digital inputs: rxtx, cs , sclk, din, b0Cb7, load, rxhp, enable to gnd...........-0.3v to +3.6v digital outputs: dout, clkout ..........................-0.3v to +3.6v bias voltages: vcobyp .......................................-0.3v to +3.6v short-circuit duration on all output pins................................10s rf input power: all rxin_..............................................+15dbm rf output differential load vswr: all txout.......................6:1 continuous power dissipation (t a = +70c) 56-pin tqfn (derate 31.3mw/c above +70c).......2500mw operating temperature range..............................-40c to +85c junction temperature.......................................................+150c storage temperature range...............................-65c to +160c lead temperature (soldering, 10s)...................................+300c (MAX2839 evaluation kit, v cc_ = 2.7v to 3.6v, t a = -40c to +85c, rx set to the maximum gain. rxtx set according to operating mode, enable = cs = high, sclk = din = low, no input signal at rf inputs, all rf inputs and outputs terminated into 5 0. 90mv rms differential i and q signals (1mhz) applied to i, q baseband inputs of transmitter in transmit mode, all registers set to recommended settings and corresponding test mode, unless otherwise noted. typical values are at v cc_ = 2.8v, f lo = 2.5ghz and t a = +25c, unless otherwise noted.) (note 1) parameter conditions min typ max units supply voltage v cc _ 2.7 3.6 v supply current shutdown mode, t a = +25c 2 a clock-out only mode 1.4 3.5 ma standby mode 32 45 rx mode one receiver on 76 95 both receivers on 117 145 tx mode 16 qam 116 64 qam (note 4) 140 170 rx calibration mode, both receivers on 153 195 tx calibration mode 102 135 rx i/q output common-mode voltage d9:d8 = 00 in a4:a0 = 00100 0.85 1.0 1.2 v d9:d8 = 01 in a4:a0 = 00100 1.1 d9:d8 = 10 in a4:a0 = 00100 1.2 d9:d8 = 11 in a4:a0 = 00100 1.35 tx baseband input common- mode voltage operating range dc-coupled 0.5 1.2 v tx baseband input bias current source current 10 20 a logic inputs: rxtx, enable, sclk, din, cs , b7:b0, load, rxhp digital input voltage high, v ih v cc - 0.4 v digital input voltage low, v il 0.4 v digital input current high, i ih -1 +1 a MAX2839 2.3ghz to 2.7ghz mimo wireless broadband rf transceiver www.maximintegrated.com maxim integrated 2 absolute maximum ratings stresses beyond those listed under absolute maximum ratings may cause permanent damage to the device. these are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. exposure to absolute maximum rating conditions for extended periods may affect device reliability. dc electrical characteristics table caution! esd sensitive device downloaded from: http:///
(MAX2839 evaluation kit, v cc_ = 2.8v, t a = +25c, f rf = 2.4999ghz, f lo = 2.5ghz; baseband output signal frequency = 100khz, f ref = 40mhz, enable = rxtx = cs = high, sclk = din = low, with power matching for the differential rf pins using the typical applications circuit and registers set to default settings and corresponding test mode, unless otherwise noted. lowpass filter is set to 10mhz rf channel bw. unmodulated single tone rf input signal is used with specifications which normally apply over the entire operating conditions, unless otherwise indicated.) (note 1) (MAX2839 evaluation kit, v cc_ = 2.7v to 3.6v, t a = -40c to +85c, rx set to the maximum gain. rxtx set according to operating mode, enable = cs = high, sclk = din = low, no input signal at rf inputs, all rf inputs and outputs terminated into 5 0. 90mv rms differential i and q signals (1mhz) applied to i, q baseband inputs of transmitter in transmit mode, all registers set to recommended settings and corresponding test mode, unless otherwise noted. typical values are at v cc_ = 2.8v, f lo = 2.5ghz and t a = +25c, unless otherwise noted.) (note 1) parameter conditions min typ max units digital input current low, i il -1 +1 a logic outputs: dout, clkout digital output voltage high, v oh sourcing 100a v cc - 0.4 v digital output voltage low, v ol sinking 100a 0.4 v parameter conditions min typ max units rf input to i, q baseband-loaded output rf input frequency range 2.3 2.7 ghz peak-to-peak gain variation over rf input frequency range tested at band edges and band center 0.8 db rf input return loss all lna settings 12 db total voltage gain t a = -40c to +85c maximum gain, b7:b0 = 0000000 90 99 db minimum gain, b7:b0 = 1111111 5 13 rf gain steps from max rf gain to max rf gain - 8db 8 db from max rf gain to max rf gain - 16db 16 from max rf gain to max rf gain - 32db 32 gain change settling time any rf or baseband gain change; gain settling to within 1db of steady state; rxhp = 1 200 ns any rf or baseband gain change; gain settling to within 0.1db of steady state; rxhp = 1 2000 baseband gain range from maximum baseband gain (b5:b0 = 000000) to minimum gain (b5:b0 = 111111), t a = -40c to +85c 58 63 66 db baseband gain minimum step size 1 db dsb noise figure voltage gain = 65db with max rf gain (b7:b6 = 00) 2.3 db voltage gain = 50db with max rf gain - 8db (b7:b6 = 01) 5.5 voltage gain = 45db with max rf gain - 16db (b7:b6 = 10) 13 voltage gain = 15db with max rf gain - 32db (b7:b6 = 11) 27 MAX2839 2.3ghz to 2.7ghz mimo wireless broadband rf transceiver www.maximintegrated.com maxim integrated 3 ac electrical characteristics tablerx mode dc electrical characteristics table (continued) downloaded from: http:///
(MAX2839 evaluation kit, v cc_ = 2.8v, t a = +25c, f rf = 2.4999ghz, f lo = 2.5ghz; baseband output signal frequency = 100khz, f ref = 40mhz, enable = rxtx = cs = high, sclk = din = low, with power matching for the differential rf pins using the typical applications circuit and registers set to default settings and corresponding test mode, unless otherwise noted. lowpass filter is set to 10mhz rf channel bw. unmodulated single tone rf input signal is used with specifications which normally apply over the entire operating conditions, unless otherwise indicated.) (note 1) parameter conditions min typ max units out-of-band input ip3 (note 2) agc set for -65dbm wanted signal, max rf gain (b7:b6 = 00) -13 dbm agc set for -55dbm wanted signal, max rf gain - 8db (b7:b6 = 01) -9 agc set for -40dbm wanted signal, max rf gain - 16db (b7:b6 = 10) -7 agc set for -30dbm wanted signal, max rf gain - 32db (b7:b6 = 11) +16 inband input p-1db max rf gain (b7:b6 = 00) -37 dbm max rf gain - 8db (b7:b6 = 01) -29 max rf gain - 16db (b7:b6 = 01) -21 max rf gain - 32db (b7:b6 = 11) -4 maximum output signal level over passband frequency range; at any gain setting; 1db compression point 1.5 v p-p i/q gain imbalance 100khz iq baseband output; 1 variation 0.1 db i/q phase error 100khz iq baseband output; 1 variation 0.125 degrees rx i/q output load impedance (r || c) minimum differential resistance 10 k? maximum differential capacitance 5 pf loopback gain (for receiver i/q calibration) transmitter i/q input to receiver i/q output; transmitter b6:b1 = 000011, receiver b5:b0 = 101000 programmed through spi -5 0 +5 db i/q output dc droop after switching rxhp to 0; average over 1s after any gain change, or 2s after receive enabled with 100hz ac-coupling 1 v/s i/q static dc offset no rf input signal; measure at 3s after receive enable; rxhp = 1 for 0 to 2s and set to 0 after 2s, 1 variation 2 mv isolation between rx channels a and b any rf gain settings 40 db receiver baseband filters baseband filter rejection at 15mhz 57 db at 20mhz 75 at > 40mhz 90 baseband highpass filter corner frequency rxhp = 1 (used before agc completion) 650 khz rxhp = 0 (used after agc completion) address a4:a0 = 01110 d5:d4 = 00 0.1 d5:d4 = 01 1 d5:d4 = 10 30 d5:d4 = 11 100 MAX2839 2.3ghz to 2.7ghz mimo wireless broadband rf transceiver www.maximintegrated.com maxim integrated 4 ac electrical characteristics tablerx mode (continued) downloaded from: http:///
(MAX2839 evaluation kit, v cc_ = 2.8v, t a = +25c, f rf = 2.4999ghz, f lo = 2.5ghz; baseband output signal frequency = 100khz, f ref = 40mhz, enable = rxtx = cs = high, sclk = din = low, with power matching for the differential rf pins using the typical applications circuit and registers set to default settings and corresponding test mode, unless otherwise noted. lowpass filter is set to 10mhz rf channel bw. unmodulated single tone rf input signal is used with specifications which normally apply over the entire operating conditions, unless otherwise indicated.) (note 1) parameter conditions min typ max units rf channel bw supported by baseband filter a4:a0 = 00100 serial bits d9:d6 = 0000 1.75 mhz a4:a0 = 00100 serial bits d9:d6 = 0001 2.25 a4:a0 = 00100 serial bits d9:d6 = 0010 3.5 a4:a0 = 00100 serial bits d9:d6 = 0011 5.0 a4:a0 = 00100 serial bits d9:d6 = 0100 5.5 a4:a0 = 00100 serial bits d9:d6 = 0101 6.0 a4:a0 = 00100 serial bits d9:d6 = 0110 7.0 a4:a0 = 00100 serial bits d9:d6 = 0111 8.0 a4:a0 = 00100 serial bits d9:d6 = 1000 9.0 a4:a0 = 00100 serial bits d9:d6 = 1001 10.0 a4:a0 = 00100 serial bits d9:d6 = 1010 12.0 a4:a0 = 00100 serial bits d9:d6 = 1011 14.0 a4:a0 = 00100 serial bits d9:d6 = 1100 15.0 a4:a0 = 00100 serial bits d9:d6 = 1101 20.0 a4:a0 = 00100 serial bits d9:d6 = 1110 24.0 a4:a0 = 00100 serial bits d9:d6 = 1111 28.0 baseband gain ripple 0 to 2.3mhz for bw = 5mhz 1.3 db p-p 0 to 4.6mhz for bw = 10mhz 1.3 baseband group delay ripple 0 to 2.3mhz for bw = 5mhz 90 ns p-p 0 to 4.6mhz for bw = 10mhz 50 baseband filter rejection for 5mhz rf channel bw at 3.3mhz 6 db at > 21mhz 85 baseband filter rejection for 10mhz rf channel bw at 6.7mhz 6 db at > 41.6mhz 85 rssi rssi minimum output voltage r load 10k? 0.4 v rssi maximum output voltage r load 10k? 2.2 v rssi slope 30 mv/db rssi output settling time to within 3db of steady state +32db signal step 200 ns -32db signal step 800 MAX2839 2.3ghz to 2.7ghz mimo wireless broadband rf transceiver www.maximintegrated.com maxim integrated 5 ac electrical characteristics tablerx mode (continued) downloaded from: http:///
(MAX2839 evaluation kit, v cc_ = 2.8v, t a = +25c, f rf = 2.501ghz, f lo = 2.5ghz, f ref = 40mhz, enable = cs = high, rxtx = sclk = din = low, with power matching for the differential rf pins using the typical applications and registers set to default settings and corresponding test mode, unless otherwise noted. lowpass filter is set to 10mhz rf channel bw. 1mhz 90mv rms cosine and sine signals applied to i/q baseband inputs of transmitter (differential dc coupled)). (note 1) parameter conditions min typ max units tx baseband i/q inputs to rf outputs rf output frequency range 2.3 2.7 ghz peak-to-peak peak gain variation over rf band output optimally matched over 200mhz rf bw 2.5 db total voltage gain max gain -3db; at unbalanced 50? matched output 12 db max output power over frequency for any given 200mhz band 64 qam ofdm signal conforming to spectral emission mask and -36db evm after i/q imbalance calibration by modem (note 3) 0 dbm rf output return loss given 200mhz band in the 2.3ghz to 2.7ghz range, for which the matching has been optimized 8 db rf gain control range b6:b1 = 000000 to 111111 62 db unwanted sideband suppression without calibration by modem, and excludes modem i/q imbalance; p out = 0dbm 45 dbc rf gain control binary weights b1 1 b2 2 b3 4 b4 8 b5 16 b6 32 carrier leakage relative to 0dbm output power; without calibration by modern -35 dbc tx i/q input impedance (r||c) differential resistance 100 k? differential capacitance 0.5 pf baseband frequency response for 5mhz rf channel bw 0 to 2.3mhz 0.2 db at > 25mhz 80 baseband frequency response for 10mhz rf channel bw 0 to 4.6mhz 0.2 db at > 41.6mhz 80 baseband group delay ripple 0 to 2.3mhz (bw = 5mhz) 20 ns 0 to 4.6mhz (bw = 10mhz) 12 MAX2839 2.3ghz to 2.7ghz mimo wireless broadband rf transceiver www.maximintegrated.com maxim integrated 6 ac electrical characteristics tabletx mode downloaded from: http:///
(MAX2839 evaluation kit, v cc_ = 2.8v, t a = +25c, f lo = 2.5ghz, f ref = 40mhz, cs = high, sclk = din = low, pll 3db loop noise bandwidth = 120khz. vco and rf synthesis enabled, unless otherwise noted.) (note 1) parameter conditions min typ max units rf channel center frequency range 2.3 2.7 ghz channel center frequency programming minimum step size 39 hz charge-pump comparison frequency 11 40 mhz reference frequency range 11 40 80 mhz reference frequency input levels ac-coupled to refclk pin 0.8 v p-p reference frequency input impedance (r||c) resistance (refclk pin) 10 k capacitance (refclk pin) 1 pf programmable reference divider values 1 2 4 closed-loop integrated phase noise integrate phase noise from 200hz to 5mhz; charge-pump comparison frequency = 40mhz -39 dbc charge-pump output current on each differential side 0.8 ma close-in spur level f offset = 0 to 1.8mhz -40 dbc f offset = 1.8mhz to 7mhz -70 f offset > 7mhz -80 reference spur level -85 dbc turnaround lo frequency error relative to steady state; measured 35s after tx-rx or rx-tx switching instant, and 4s after any receiver gain changes 50 hz temperature range over which vco maintains lock relative to the ambient temperature t a , as long as the vco lock temperature range is within operating temperature range t a 40 c reference output clock divider values 2 output clock drive level 20mhz output, 1x drive setting 1.5 v p-p output clock load impedance (r||c) resistance 10 k capacitance 2 pf MAX2839 2.3ghz to 2.7ghz mimo wireless broadband rf transceiver www.maximintegrated.com maxim integrated 7 ac electrical characteristics tablefrequency synthesis downloaded from: http:///
(MAX2839 evaluation kit, v cc = 2.8v, f ref = 40mhz, cs = high, sclk = din = low, and t a = +25c, unless otherwise noted.) (note 1) (MAX2839 evaluation kit, v cc_ = 2.8v, f lo = 2.5ghz, f ref = 40mhz, cs = high, sclk = din = low, 3db pll noise bandwidth = 120khz, and t a = +25c, unless otherwise noted.) (note 1) parameter conditions min typ max units pa bias dac: voltage mode output high level 10ma source current v cc - 0.1 v output low level 100a sink current 0.1 v turn-on time excludes programmable delay of 0 to 7s in steps of 0.5s 200 ns crystal oscillator on-chip tuning capacitance range maximum capacitance, a4:a0 = 11000, d6:d0 = 1111111 15.5 pf minimum capacitance, a4:a0 = 11000, d6:d0 = 0000000 0.5 on-chip tuning capacitance step size 0.12 pf on-chip temperature sensor digital output code readout at dout pin through spi a4:a0 = 01011, d4:d0 t a = +25c 01111 t a = +85c 11101 t a = -40c 00001 parameter symbol conditions min typ max units system timing turnaround time measured from tx or rx enable edge; signal settling to within 2db of steady state rx to tx 2 s tx to rx, rxhp = 1 2 tx turn-on time (from standby mode) measured from tx-enable edge; signal settling to within 2db of steady state 2 s tx turn-off time (to standby mode) from tx-disable edge 0.1 s rx turn-on time (from standby mode) measured from rx-enable edge; signal settling to within 2db of steady state 2 s rx turn-off time (to standby mode) from rx-disable edge 0.1 s transmitter and receiver parallel gain control load rising edge setup time b7:b0 stable to load rising edge 10 ns load rising edge hold time load rising edge to b7:b0 stable 10 ns MAX2839 2.3ghz to 2.7ghz mimo wireless broadband rf transceiver www.maximintegrated.com maxim integrated 8 ac electrical characteristics tablemiscellaneous blocks ac electrical characteristics tabletiming downloaded from: http:///
(MAX2839 evaluation kit, v cc_ = 2.8v, f lo = 2.5ghz, f ref = 40mhz, cs = high, sclk = din = low, 3db pll noise bandwidth = 120khz, and t a = +25c, unless otherwise noted.) (note 1) note 1: min/max limits are production tested at t a = +85c. min/max limits at t a = -40c and t a = +25c are guaranteed by design and characterization. the power-on register settings are not production tested. load register setting 500ns after v cc is applied. note 2: two tones at +20mhz and +39mhz offset with -35dbm/tone. measure im3 at 1mhz. note 3: gain adjusted over max gain and max gain -3db. optimally matched over given 200mhz band. note 4: tx mode supply current is specified for 64 qam while achieving the tx output spectrum mask shown in the typical operating characteristics . the supply current can be reduced for 16 qam signal by adjusting the tx bias settings through the spi. parameter symbol conditions min typ max units load falling edge setup time b7:b0 stable to load falling edge 10 ns load falling edge hold time load falling edge to b7:b0 stable 10 ns load rise and fall time between 10% and 90% of static levels 100 ns 4-wire serial parallel interface timing (see figure 1) sclk rising edge to cs falling edge wait time t cso 6 ns falling edge of cs to rising edge of first sclk time t css 6 ns din to sclk setup time t ds 6 ns din to sclk hold time t dh 6 ns sclk pulse-width high t ch 6 ns sclk pulse-width low t cl 6 ns last rising edge of sclk to rising edge of cs or clock to load enable setup time t csh 6 ns cs high pulse width t csw 20 ns time between rising edge of cs and the next rising edge of sclk t cs1 6 ns clock frequency f clk 45 mhz rise time t r 0.1/f clk ns fall time t f 0.1/f clk ns sclk falling edge to valid dout t d 12.5 ns MAX2839 2.3ghz to 2.7ghz mimo wireless broadband rf transceiver www.maximintegrated.com maxim integrated 9 ac electrical characteristics tabletiming (continued) downloaded from: http:///
(v cc = 2.8v, t a = +25c, f lo = 2.5ghz, f ref = 40mhz, cs = high, rxhp = sclk = din = low, rf bw = 10mhz, tx output at 50 unbalanced output of balun, using the MAX2839 evaluation kit.) dual rx supply current vs. supply voltage supply voltage (v) supply current (ma) MAX2839 toc02 2.7 3.0 3.3 3.6 80 90 100 110 120 130 140 t a = -40c t a = +25c t a = +85c noise figure vs. baseband gain setting baseband vga code noise figure (db) MAX2839 toc03 0 9 18 27 36 45 54 63 0 10 20 30 40 50 lna = max lna = max - 8db lna = max - 16db lna = max - 32db rx voltage gain vs. frequency frequency (mhz) gain (db) MAX2839 toc04 2300 2380 2460 2540 2620 2700 40 50 60 70 80 90 100 110 lna = max lna = max - 8db lna = max - 16db lna = max - 32db rx voltage gain vs. frequency (maximum lna gain) frequency (mhz) gain (db) max2939 toc05 2300 2380 2460 2540 2620 2700 95 97 99 101 103 t a = -40c t a = +25c t a = +85c rx voltage gain vs. baseband gain setting baseband vga code voltage gain (db) MAX2839 toc06 0 9 18 27 36 45 54 63 0 40 80 120 lna = max lna = max - 8db lna = max - 16db lna = max - 32db rx output v 1db vs. gain setting baseband vga code output v 1db (v rms ) MAX2839 toc07 0 9 18 27 36 45 54 63 0 0.4 0.8 1.2 1.6 single rx supply current vs. supply voltage supply voltage (v) supply current (ma) MAX2839 toc01 2.7 3.0 3.3 3.6 60 65 70 75 80 85 90 t a = -40c t a = +25c t a = +85c rx isolation vs. lna gain setting lna gain setting (db) receiver isolation (db) MAX2839 toc08 -35 -25 -15 -5 5 30 35 40 45 50 lna = max lna = max - 8db lna = max - 16db lna = max - 32db maxim integrated 10 www.maximintegrated.com MAX2839 2.3ghz to 2.7ghz mimo wireless broadband rf transceiver typical operating characteristics downloaded from: http:///
(v cc = 2.8v, t a = +25c, f lo = 2.5ghz, f ref = 40mhz, cs = high, rxhp = sclk = din = low, rf bw = 10mhz, tx output at 50 unbalanced output of balun, using the MAX2839 evaluation kit.) rx evm vs. p in (channel bandwidth = 10mhz, 64 qam fusc) p in (dbm) evm (%) MAX2839 toc09 -100 -90 -80 -70 -60 -50 -40 -30 -20 -10 0 10 0 2 4 6 8 10 12 14 16 18 20 22 lna = max lna = max - 32db lna = max - 16db lna = max - 8db rx evm vs. v out (channel bandwidth = 10mhz, 64 qam fusc) v out (dbv rms ) evm (%) MAX2839 toc10 -30 -26 -22 -18 -14 -10 -6 0 4 8 12 lna = maxp in = -50dbm wimax evm vs. ofdm jammer (10mhz channel bandwidth, 64 qam fusc) p wanted = p sensitivity + 3db = -70.3dbm at antenna (including 4db front-end loss). evm at p sensitivity = 6.37%, without jammer. p jammer at antenna (dbm) evm (%) MAX2839 toc11 -70 -60 -50 -40 -30 -20 0 2 4 6 8 10 12 14 f offset =10mhz f offset = 20mhz -130 -110-120 -90 -100 -70-80 -60 -40-50 -30 0 26.5g rx emission spectrum at lna input (tx off, lna gain = max) MAX2839 toc12 frequency (hz) (db) maxim integrated 11 www.maximintegrated.com MAX2839 2.3ghz to 2.7ghz mimo wireless broadband rf transceiver typical operating characteristics (continued) downloaded from: http:///
(v cc = 2.8v, t a = +25c, f lo = 2.5ghz, f ref = 40mhz, cs = high, rxhp = sclk = din = low, rf bw = 10mhz, tx output at 50 unbalanced output of balun, using the MAX2839 evaluation kit.) rx b input differential impedance vs. frequency MAX2839 toc14 frequency (ghz) real component ( ? ) imagianry component ( ? ) 2.6 2.5 2.4 33.90 34.00 34.10 34.20 34.30 34.40 34.50 34.60 34.70 34.8033.80 -84.0 -82.0 -80.0 -78.0 -76.0 -74.0 -72.0 -70.0 -68.0 -66.0-86.0 2.3 2.7 imaginary real rx input return loss vs. frequency frequency (mhz) rx input return loss (db) MAX2839 toc15 2300 2400 2500 2600 2700 -70 -60 -50 -40 -30 -20 -10 0 lna = max lna = max - 8db lna = max - 16db lna = max - 32db rssi voltage vs. input power p in (dbm) rssi voltage (v) MAX2839 toc16 -110 -80 -50 -20 10 0 0.5 1.0 1.5 2.0 2.5 lna = max lna = max - 8db lna = max - 16db lna = max - 32db rx rssi step response (+32db signal step) MAX2839 toc17 200ns/div 3v0v 1.45v0.45v lna gain control rssi output 33.90 34.20 34.8034.50 35.10 35.40 -89.0 -85.0 -77.0-81.0 -73.0 -69.0 rx a input differential impedance vs. frequency MAX2839 toc13 frequency (ghz) real component ( ? ) imaginary component ( ? ) 2.3 2.5 2,4 2.6 2.7 real imaginary rx rssi step response (-32db signal step) MAX2839 toc18 200ns/div 3v0v 1.45v0.45v lna gaincontrol rssi maxim integrated 12 www.maximintegrated.com MAX2839 2.3ghz to 2.7ghz mimo wireless broadband rf transceiver typical operating characteristics (continued) downloaded from: http:///
(v cc = 2.8v, t a = +25c, f lo = 2.5ghz, f ref = 40mhz, cs = high, rxhp = sclk = din = low, rf bw = 10mhz, tx output at 50 unbalanced output of balun, using the MAX2839 evaluation kit.) rx lpf group delay vs. frequency frequency (mhz) lpf group delay (ns) MAX2839 toc19 0 2 4 6 8 10 12 14 16 0 50 100 150 200 250 300 350 channel bw = 5mhz channel bw = 8mhz channel bw = 9mhz channel bw = 10mhz rx dc offset settling response (+8db bb vga gain step) MAX2839 toc20 10s/div 2v/div 0v 0v 5mv/div vga gaincontrol rx dc offset settling response (-8db bb vga gain step) MAX2839 toc21 10s/div 2v/div 0v 0v 5mv/div vga gaincontrol rx dc offset settling response (-16db bb vga gain step) MAX2839 toc22 10s/div 2v/div 0v 0v 5mv/div vga gaincontrol rx bb vga settling response (-8db bb vga gain step) MAX2839 toc25 200ns/div 2v/div 0v 1v/div vga gain control rx dc offset settling response (-32db bb vga gain step) MAX2839 toc23 10s/div 2v/div 0v 0v 5mv/div vga gaincontrol rx bb vga settling response (-16db bb vga gain step) MAX2839 toc26 200ns/div 2v/div 0v 1v/div vga gain control rx bb vga settling response (+8db bb vga gain step) MAX2839 toc24 200ns/div 2v/div 0v 1v/div vga gain control rx bb vga settling response (-32db bb vga gain step) MAX2839 toc27 200ns/div 2v/div 0v 1v/div vga gain control maxim integrated 13 www.maximintegrated.com MAX2839 2.3ghz to 2.7ghz mimo wireless broadband rf transceiver typical operating characteristics (continued) downloaded from: http:///
(v cc = 2.8v, t a = +25c, f lo = 2.5ghz, f ref = 40mhz, cs = high, rxhp = sclk = din = low, rf bw = 10mhz, tx output at 50 unbalanced output of balun, using the MAX2839 evaluation kit.) rx lna settling response (max to max - 8db) MAX2839 toc28 200ns/div 2v/div 0v 1v/div lna gain control rx lna settling response (max to max - 32db) MAX2839 toc29 200ns/div 2v/div 0v 1v/div lna gain control rx bb frequency response frequency (mhz) response (db) MAX2839 toc30 -70 -60 -50 -40 -30 -20 -10 0 10 0.1 1 10 100 channel bw= 1.5mhz channel bw= 5mhz channel bw= 10mhz channel bw = 28mhz rx bb frequency response frequency (mhz) response (db) MAX2839 toc31 -6 -5 -4 -3 -2 -1 0 1 2 0.1 1 10 100 channel bw= 1.5mhz channel bw= 5mhz channel bw= 10mhz channel bw= 28mhz histogram: rx static dc offset MAX2839 toc34 1 s/div 664 830166 498332 996 mean = 0dev = 0.23981mv sample size = 7841 histogram: iq gain imbalance MAX2839 toc32 1 s/div 316 395 79 237158 474 mean = 0 dev = 51.8mv sample size = 7839 power-on dc offset cancellation with input signal MAX2839 toc35 1s/div 5v/div 0v 200mv/div vga code = -36lna gain = max i/q output enable histogram: rx phase imbalance MAX2839 toc33 1 s/div 516 645129 387258 774 mean = 0dev = 0.11878 sample size = 7841 power-on dc offset cancellation without input signal MAX2839 toc36 1s/div 5v/div 0v 10mv/div vga code = -36lna gain = max i/q output enable maxim integrated 14 www.maximintegrated.com MAX2839 2.3ghz to 2.7ghz mimo wireless broadband rf transceiver typical operating characteristics (continued) downloaded from: http:///
(v cc = 2.8v, t a = +25c, f lo = 2.5ghz, f ref = 40mhz, cs = high, rxhp = sclk = din = low, rf bw = 10mhz, tx output at 50 unbalanced output of balun, using the MAX2839 evaluation kit.) tx supply current vs. supply voltage supply voltage (v) supply current (ma) MAX2839 toc37 2.7 3.0 3.3 3.6 130 134 138 142 146 150 t a = -40c t a = +25c t a = +85c tx baseband frequency response frequency (mhz) response (db) MAX2839 toc38 -70 -60 -50 -40 -30 -20 -10 0 10 0.1 1 10 100 channel bw= 1.5mhz channel bw= 5mhz channel bw= 10mhz channel bw = 28mhz tx baseband frequency response frequency (mhz) response (db) MAX2839 toc39 -6 -5 -4 -3 -2 -1 0 1 2 0.1 1 10 100 channel bw= 1.5mhz channel bw= 5mhz channel bw= 10mhz channel bw = 28mhz tx output power vs. frequency frequency (mhz) p out (dbm) MAX2839 toc40 2300 2350 2400 2450 2500 2550 2600 2650 2700 -4 -3 -2 -1 0 1 2 3 4 t a = -40c t a = +25c t a = +85c tx gain set to max - 3db 0dbr 10db/div -70dbr 2.495ghz 2.5ghz 2.555ghz tx output spectrum (10mhz channel bandwidth, 64 qam fusc) MAX2839 toc43 p out = 0dbm mask tx output power vs. gain setting tx gain code p out (dbm) MAX2839 toc41 0 16 32 48 64 -70 -50 -30 -10 10 t a = -40c t a = +25c t a = +85c tx carrier leakage vs. frequency frequency (mhz) carrier leakage (dbc) MAX2839 toc44 2300 2350 2400 2450 2500 2550 2600 2650 2700 -60 -55 -50 -45 -40 -35 -30 tx gain set to max - 3db t a = -40c t a = +25c t a = +85c 0dbr 10db/div -70dbr 2.495ghz 2.5ghz 2.555ghz tx output spectrum (10mhz channel bandwidth, 16 qam fusc) MAX2839 toc42 p out = 0dbm mask tx carrier leakage vs. gain setting tx gain code carrier leakage (dbc) MAX2839 toc45 0 9 18 27 36 45 54 63 -70 -65 -60 -55 -50 -45 -40 -35 -30 -25 -20 t a = -40c t a = +25c t a = +85c maxim integrated 15 www.maximintegrated.com MAX2839 2.3ghz to 2.7ghz mimo wireless broadband rf transceiver typical operating characteristics (continued) downloaded from: http:///
(v cc = 2.8v, t a = +25c, f lo = 2.5ghz, f ref = 40mhz, cs = high, rxhp = sclk = din = low, rf bw = 10mhz, tx output at 50 unbalanced output of balun, using the MAX2839 evaluation kit.) tx sideband level vs. frequency frequency (mhz) sideband level (dbc) MAX2839 toc46 2300 2350 2400 2450 2500 2550 2600 2650 2700 -80 -75 -70 -65 -60 -55 -50 -45 -40 -35 -30 tx gain set to max - 3db t a = -40c t a = +25c t a = +85c tx sideband level vs. gain setting tx gain code sideband level (dbc) MAX2839 toc47 0 9 18 27 36 45 54 63 -80 -70 -60 -50 -40 -30 t a = -40c t a = +25c t a = +85c evm vs. tx output power (64 qam fusc, 10mhz channel bandwidth) p out (dbm) evm (%) MAX2839 toc48 -50 -40 -30 -20 -10 0 0 0.5 1.0 1.5 2.0 2.5 3.0 -80 0 -10-20 -30 -40 -50 (dbm) -60-70 -90 -100 0hz 26.5ghz tx output emission spectrum MAX2839 toc49 rbw = 200khz 25db 5db/div -25db 2ghz 3ghz frequency tx output return loss vs. frequency MAX2839 toc52 histogram: tx lo leakage MAX2839 toc50 1 s/div 248 310 62 186124 372 mean = -46.235dbcdev = 5.1577db sample size = 7841 lo frequency vs. differential tune voltage differential tune voltage (v) lo frequency (ghz) MAX2839 toc53 -1.5 -1.0 -0.5 0 0.5 1.0 1.5 2.0 2.5 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 histogram: tx sideband suppression MAX2839 toc51 1 s/div 336 420 84 252168 504 mean = -47.856dbcdev = 2.8827db sample size = 7841 -130 -50-60 -70 -80 -90 -100 phase noise (dbc/hz) -110-120 -140 -150 0.0001 0.001 0.01 offset frequency (mhz) 0.1 1 10 phase noise vs. offset frequency MAX2839 toc54 maxim integrated 16 www.maximintegrated.com MAX2839 2.3ghz to 2.7ghz mimo wireless broadband rf transceiver typical operating characteristics (continued) downloaded from: http:///
(v cc = 2.8v, t a = +25c, f lo = 2.5ghz, f ref = 40mhz, cs = high, rxhp = sclk = din = low, rf bw = 10mhz, tx output at 50 unbalanced output of balun, using the MAX2839 evaluation kit.) vco gain vs. differential tune voltage differential tune voltage (v) vco gain (mhz/v) MAX2839 toc55 -1.5 -1.0 -0.5 0 0.5 1.0 1.5 2.0 2.5 0 20 40 60 80 100khz 20khz/div -100khz 0 time (s) 1.498 channel-switching frequency settling (2.3ghz to 2.7ghz, automatic vco sub-band selection) MAX2839 toc56 100khz 20khz/div -100khz 0 time (s) 1.498 channel-switching frequency settling (2.7ghz to 2.3ghz, automatic vco sub-band selection) MAX2839 toc57 100khz 20khz/div -100khz 0 time (s) 199.89 channel-switching frequency settling (2.3ghz to 2.7ghz, manual vco sub-band selection) MAX2839 toc58 frequency error rx-to-tx turnaround frequency glitching settling MAX2839 toc61 1s/div 2v/div 10khz/div rx to tx switching 100khz 20khz/div -100khz 0 time (s) 199.89 channel-switching frequency settling (2.7ghz to 2.3ghz, manual vco sub-band selection) MAX2839 toc59 10khz/div 2v/div 1s/div tx-to-rx turnaround frequency glitch settling MAX2839 toc60 tx to rx switching frequency error maxim integrated 17 www.maximintegrated.com MAX2839 2.3ghz to 2.7ghz mimo wireless broadband rf transceiver typical operating characteristics (continued) downloaded from: http:///
pin name function 1 gndrxlna_a receiver a lna ground 2 vccrxlna_a receiver a lna supply voltage. bypass with a 22pf capacitor as close as possible to the pin. 3 b0 receiver gain-control logic input bit 0 4 load receiver gain select. positive edge trigger latches digital gain inputs b0Cb7 to receive a. negative edge trigger latches digital gain inputs b0Cb7 to receive b. 5 vccrxlna_b receiver b lna supply voltage. bypass with a 22pf capacitor as close as possible to the pin. 6 gndrxlna_b receiver b lna ground 7 rxinb+ receiver b lna differential input. input is internally dc-coupled. 8 rxinb- 9 b4 receiver and transmitter gain-control logic input bit 4 10 b3 receiver and transmitter gain-control logic input bit 3 11 vcctxpad supply voltage for transmitter pa driver. bypass with a 22pf capacitor as close as possible to the pin. 12 b2 receiver and transmitter gain-control logic input bit 2 13 txout+ power ampliier driver differential output. the pins have internal ac blocking capacitors. 14 txout- 15 b1 receiver and transmitter gain-control logic input bit 1 16 b5 receiver and transmitter gain-control logic input bit 5 17 pabias transmit external pa bias dac output 18 vcctxmx transmitter upconverter supply voltage. bypass with a 22pf capacitor as close as possible to the pin. 19 sclk serial-clock logic input of 4-wire serial interface 20 enable transceiver enable 21 clkout reference clock buffer output 22 refclk crystal or reference clock input. ac-couple a crystal or a reference clock to this analog input. 23 xtal1 xtal input. connect the other terminal of the xtal to this pin. 24 vccxtal crystal oscillator supply voltage. bypass with a 100nf capacitor as close as possible to the pin. 25 vcccp pll charge-pump supply voltage. bypass with a 100nf capacitor as close as possible to the pin. 26 gndcp charge-pump circuit ground 27 cpout+ differential charge-pump output. connect the frequency synthesizers loop ilter between these pins (see the typical operating circuit ). 28 cpout- 29 gndvco vco ground 30 vcobyp on-chip vco regulator output bypass. bypass with a 1f capacitor to gnd. do not connect other circuitry to this pin. 31 vccvco vco supply voltage. bypass with a 22nf capacitor as close as possible to the pin. 32 cs chip-select logic input of 4-wire serial interface 33 dout data logic output of 4-wire serial interface 34 din data logic input of 4-wire serial interface 35 rxbbib- receiver b baseband i-channel differential outputs 36 rxbbib+ MAX2839 2.3ghz to 2.7ghz mimo wireless broadband rf transceiver www.maximintegrated.com maxim integrated 18 pin description downloaded from: http:///
pin name function 37 rxbbqb- receiver b baseband q-channel differential outputs 38 rxbbqb+ 39 rssi receiver signal strength output 40 b7 receiver gain-control logic input bit 7 41 b6 receiver and transmitter gain-control logic input bit 6 42 rxhp receiver baseband ac-coupling highpass corner frequency control logic input. for typical wimax application, connect pin to ground. 43 rxbbqa- receiver baseband q-channel differential outputs 44 rxbbqa+ 45 rxbbia- receiver a baseband i-channel differential outputs 46 rxbbia+ 47 vccrxvga receiver vga supply voltage. bypass with a 100nf capacitor as close as possible to the pin. 48 vccrxfl receiver baseband filter supply voltage. bypass with a 100nf capacitor as close as possible to the pin. 49 txbbi- transmitter baseband i-channel differential inputs 50 txbbi+ 51 txbbq+ transmitter baseband q-channel differential inputs 52 txbbq- 53 vccrxmx receiver downconverters supply voltage. bypass with a 22pf capacitor as close as possible to the pin. 54 rxtx receive/transmit mode enable 55 rxina- receiver a lna differential input. input is internally dc-coupled. 56 rxina+ ep exposed paddle. internally connected to gnd. connect to a large ground plane for optimum rf performance and enhanced thermal dissipation. not intended as an electrical connection point. MAX2839 2.3ghz to 2.7ghz mimo wireless broadband rf transceiver www.maximintegrated.com maxim integrated 19 pin description (continued) downloaded from: http:///
detailed description modes of operation the modes of operation for the MAX2839 are shutdown, clock-out only, standby, receive, transmit, transmitter calibration and receiver calibration. see table 1 for a summary of the modes of operation. when the parts are active, various blocks can be shutdown individually by programming different spi registers. shutdown mode the MAX2839 features a low-power shutdown mode. in shutdown mode, all circuit blocks are powered down, except the 4-wire serial bus and its internal programmable registers. clock-out only in clock-out mode, the entire transceiver is off except the divided reference clock output on the clkout pin and the clock divider, which remains on. standby mode the standby mode is used to enable the frequency syn - thesizer block while the rest of the device is powered down. in this mode, pll, vco, and lo generator are on so that tx or rx modes can be quickly enabled from this mode. these and other blocks can be selectively enabled in this mode by programming different spi registers. receive (rx) mode in receive mode, all rx circuit blocks are powered on and active. antenna signal is applied; rf is downconverted, filtered, and buffered at rx bb i and q outputs. either receiver a or both receivers can be enabled. receiver b cannot be enabled by itself. transmit (tx) mode in transmit mode, all tx circuit blocks are powered on. the external pa is powered on after a programmable delay using the on-chip pa bias dac. transmitter (tx) calibration mode all tx circuit blocks except pa driver and external pa are powered on and active. the am detector and receiver i/q channel buffers are also on, along with multiplexers in receiver side to route this am detectors signal to each i and q differential outputs. table 1. operating mode mode control logic inputs circuit block states mode enable pin rxtx pin spi reg1 d<3> spi reg16 d<1:0> rx path tx path pll, vco, lo gen calibration sections on clock output shutdown 0 0 x xx off off off none off clock-out only 1 x x x0 off off off none on clock-out only x 1 x x0 off off off none on standby 0 1 x 01 off off on or off none on rx (1x2 mimo) 1 1 1 01 on off on none on rx (1x1 siso) 1 1 0 01 on (rxa) off on none on tx 1 0 x 01 off on on none on tx calibration 1 0 x 11 off on (except pa driver) on am detector + rx i, q buffers on rxa calibration (loopback) 1 1 0 11 on (except lna) on (except pa driver) on loopback on rxb calibration (loopback) 1 1 1 11 on (except lna) on (except pa driver) on loopback on MAX2839 2.3ghz to 2.7ghz mimo wireless broadband rf transceiver www.maximintegrated.com maxim integrated 20 downloaded from: http:///
receiver (rx) calibration or loopback part of rx and tx circuit blocks except lna and pa driver are powered on and active. the transmitter i/q input signals are upconverted to rf, and the output of the tx gain control block (vga) is fed to the receiver at the input of the downconverter. either receiver a or both receivers can be connected to the transmitter and powered on. the i/q lowpass filters are not present in the transmitter signal path (they are bypassed). temperature sensor readout through dout pin to estimate chip temperature, on-chip temperature sen - sor is enabled by programming address 9 d<1> = 1. the procedure is as follows: 1) enable temp sensor by setting address 9 d<1> = 1. roughly 100s to 1ms time is needed to let the tem - perature sensor output settle to within 5 to 1 degrees. 2) to trigger temperature sensor adc, program address 9 d<0> from 0 to 1. the adc will acquire the 5-bit logic output in 2s, temperature sensor needs to be on (address 9 d<1> = 1) to maintain the adc logic output. note that the adc trigger should happen after the temp sensor is enabled to get correct result. therefore, step 1 and step 2 of this procedure should be carried out on two separate spi programming events sepa - rated by the temp sensor settling time. 3) note that after the adc latches its output and you desire to retake another temp sensor temperature reading value, the adc has to be re-triggered to reac - quire a new temp sensor value (assuming temp sen - sor is already enabled). to do so, program address 9 d<0> from 1 to 0 then from 0 to 1. after the adc latches it digital output in 2s it shuts off. 4) to read the 5-bit logic output through dout pin, apply 4-wire spi readout programming sequence to address 11. vas operating procedure after power-up, program address 22 d<1>=0 such that vas frequency acquisition starts from vco band#15, it reduces the worst-case acquisition time by half. vas acquisition starts after address 17 is programmed (i.e. rising edge of csb), it takes the worst-case 896s to acquire lock. wireless lan or man system do not switch channel frequency often, die temperature may change quite a bit over time and make pll out of lock. to relock pll as soon as possible, user can program address 22 d<1> = 1 after the 1st power-up frequency acquisition. vas starts from the previous frequency subband and should relock pll within 112s. vas readout the selected vco subband, vtune adc output and vas accomplished (vasa) signal can be read out through dout pin by programming address 9 d<7:5>=010 and corresponding address 26 d<9:6>. vco subband selection through spi for very fast band selection operation, user can char - acterize the mapping between vco frequencies and corresponding subbands during factory calibration. after programming address 22 d<0>=0, the vco subband can be selected by address 23 d<4:0>. programmable registers and 4-wire spi interface the MAX2839 includes 32 programmable 16-bit registers. the most significant bit (msb) is the read/write selection bit. the next 5 bits are register address. the 10 least significant bits (lsbs) are register data. register data is loaded through the 4-wire spi/microwire ? -compatible serial interface. data at din is shifted in msb first and is framed by cs . when cs is low, the clock is active, and input data is shifted at the rising edge of the clock. during the read mode, register data selected by address bits is shifted out to dout at the falling edges of the clock. at the cs rising edge, the 10-bit data bits are latched into the register selected by address bits. see figure 1. the reg - ister values are preserved in shutdown mode as long as the power-supply voltage is maintained. however, every time the power-supply voltage is turned on, the registers are reset to the default values. microwire is a registered trademark of national semiconductor corp. MAX2839 2.3ghz to 2.7ghz mimo wireless broadband rf transceiver www.maximintegrated.com maxim integrated 21 downloaded from: http:///
figure 1. 4-wire spi serial-interface timing diagram din sclk bit 6 bit 2 bit 1 t ds t dh bit 14 bit 13 bit 5 t ch t cl t csh t cso t css t csw t cs1 dout don't care spi register write din sclk bit 2 bit 1 t d bit 5 cs dout don't care spi register read bit 6 bit 14 bit 13 don't care cs MAX2839 2.3ghz to 2.7ghz mimo wireless broadband rf transceiver www.maximintegrated.com maxim integrated 22 downloaded from: http:///
table 2. recommended register settings address d9 d8 d7 d6 d5 d4 d3 d2 d1 d0 hex 0 0 0 0 0 0 0 0 0 0 0 000 1 0 0 0 0 0 0 1 1 0 0 00c 2 0 0 1 0 0 0 0 0 0 0 080 3 0 1 1 0 1 1 1 0 0 1 1b9 4 1 1 1 1 1 0 0 1 1 0 3e6 5 0 1 0 0 0 0 0 0 0 0 100 6 0 0 0 0 0 0 0 0 0 0 000 7 1 0 0 0 0 0 1 0 0 0 208 8 1 0 0 0 1 0 0 0 0 0 220 9 0 0 0 0 0 1 1 0 0 0 018 10 0 0 0 0 0 0 1 1 0 0 00c 11 0 0 0 0 0 0 0 1 0 0 004 12 1 0 0 1 0 0 1 1 1 1 24f 13 0 1 0 1 0 1 0 0 0 0 150 14 1 1 1 1 0 0 0 1 0 1 3c5 15 1 0 0 0 0 0 0 0 0 1 201 16 0 0 0 0 0 1 1 1 0 0 01c 17 0 1 0 1 0 1 0 1 0 1 155 18 0 1 0 1 0 1 0 1 0 1 155 19 0 1 0 1 0 1 0 0 1 1 153 20 1 0 0 1 0 0 1 0 0 1 249 21 0 0 0 0 1 0 1 1 0 1 02d 22 0 1 1 0 1 0 1 0 0 1 1a9 23 1 0 0 1 0 0 1 1 1 1 24f 24 0 1 1 0 0 0 0 0 0 0 180 25 0 0 0 0 0 0 0 0 0 0 000 26 1 1 1 1 0 0 0 0 0 0 3c0 27 1 0 0 0 0 0 0 0 0 0 200 28 0 0 1 1 0 0 0 0 0 0 0c0 29 0 0 0 0 1 1 1 1 1 1 03f 30 1 1 1 0 0 0 0 0 0 0 380 31 1 1 0 1 0 0 0 0 0 0 340 MAX2839 2.3ghz to 2.7ghz mimo wireless broadband rf transceiver www.maximintegrated.com maxim integrated 23 downloaded from: http:///
table 3. address 0, rxenable register (default = 000 hex ) table 4. address 1, rxrf register 1 (default = 00c hex ) table 5. address 2, rxrf register 2 (default = 080 hex ) table 6. address 3, rxrf and lpf (default = 1b9 hex ) data bits default description d9:d0 0000000000 set to recommended value. data bits default description d9:d4 00000 rx lo iq calibration spi control. active when address 2 d<2> = 1. as trim word of fuse links independent of address 3 d<2>. 00000 = +4.0 phase error (default) (q lags i signal by 94 ) 011111= 0.0 phase error 11111 = -4.0 deg phase error (q lags i signal by 86 ) d3 1 1*2 mimo mode selection.0 = 1*1 1= 1*2 mimo (default) d2 1 set to recommended value. d1:d0 0 selects center frequency of lna output lc tank. 0 = band 2.3~2.5ghz (default) 1 = band 2.5~2.7ghz. data bits default description d9:d3 0010000 set to recommended value. d2 0 rx iq calibration dac mux between trim word and spi.0 = mux trim word (default) 1 = mux spi d1 0 set to recommended value. d0 0 mux lna gain control bits from spi. 0 = lna gain controlled by external pins (default) 1 = lna gain controlled by spi data bits default description d9:d0 0110111001 set to recommended value. MAX2839 2.3ghz to 2.7ghz mimo wireless broadband rf transceiver www.maximintegrated.com maxim integrated 24 downloaded from: http:///
table 7. address 4, lpf (default = 3e6 hex ) table 8. address 5, lpf and vga register 1 (default = 100 hex ) data bits default description d9:d6 1111 lpf rf bandwidth.0000 = 1.75mhz 0001 = 2.5mhz 0010 = 3.5mhz 0011 = 5.0mhz 0100 = 5.5mhz 0101 = 6.0mhz 0110 = 7.0mhz 0111 = 8.0mhz 1000 = 9.0mhz 1001 = 10.0mhz 1010 = 12.0mhz 1011 = 14.0mhz 1100 = 15.0mhz 1101 = 20.0mhz 1110 = 24.0mhz 1111 = 28.0mhz (default) d5:d4 10 set to recommended value. d3:d2 01 fine tune the lpf cutoff frequency. 00: -10% 01: nominal (default) 10: nominal 11: +10% d1:d0 10 set to recommended value. default description d9:d8 01 mode of the lowpass ilter block. active when address 8 d<2> = 1. 00 = rx calibration 01 = rx lpf (default) 10 = tx lpf 11 = lpf trim d7:d2 000000 set attenuation in rx1 vga. active when address 8 d<1> = 1. 000000 = maximum gain (default) 000001 = max gain - 1db 111111 = minimum gain d1:d0 00 lna1 gain setting spi controls. active when address 2 d0 = 1. 00 = max gain (default) 01 = max -8db 10 = max -16db 11 = max -32db MAX2839 2.3ghz to 2.7ghz mimo wireless broadband rf transceiver www.maximintegrated.com maxim integrated 25 downloaded from: http:///
table 9. address 6, lpf and vga register 2 (default = 000 hex ) table 10. address 7, rssi and vga register (default = 208 hex ) data bits default description d9:d8 00 set rx vga output common mode. 00 = 1.0v (default) 01 = 1.1v 10 = 1.2v 11 = 1.35v d7:d2 000000 set attenuation in rx2 vga. active when address 8 d<1> = 1. 000000 = max gain (default) 000001 = max gain - 1db 11111 = min gain d1:d0 00 lna2 gain setting spi controls. active when address 2 d<0> = 1. 00 = max gain (default) 01 = max -8db 10 = max -16db 11 = max -32db data bits default description d9 1 select rssi input.0 = select input from rx2 1 = select input from rx1 (default) d8 0 set to recommended value. d7 0 rxbbi_p/m and rxbbq_p/m pin output select. 0 = select rxvga output (default) 1 = select tx am detector output d6:d3 0001 set to recommended value. d2 0 rssi operating mode during rx mode. 0 = off when rxhp = 0 (default) 1 = independent of rxhp d1 0 rssi pin output mux.0 = rssi (default) 1 = temperature sensor d0 0 set to recommended value. MAX2839 2.3ghz to 2.7ghz mimo wireless broadband rf transceiver www.maximintegrated.com maxim integrated 26 downloaded from: http:///
table 11. address 8, rx_top spi bits (default = 220 hex ) table 12. address 9, rx_top spi bits (default = 018 hex ) data bits default description d9:d3 1000100 set to recommended value. d2 0 lpf mode mux, lpf_mode_sel = 1. 0 = normal operation (default) 1 = operating mode is programmed address 5 d<9:8> d1 0 mux vga gain control bits from spi. 0 = vga gain controlled by external pins (default) 1 = vga gain controlled by spi d0 0 set to recommended value. data bits default description d9:d8 00 set to recommended value. d7:d5 000 dout pin output mux select. 000 = spi output (default) 001 = pll lock detect and test output by address 21 d<9:7>. set address 21 d<9:7> = 000 for lock detect output. 010 = vas test output by address 26 d<9:6> 011 = hpfsm test output by address 15 d<5:1> 100 = logen trim divider output 101 = rx fuse burnt 110 = tx fuse burnt 111 = set 0 d4 0 dout pin three-state control. 0 = dout pin is independent on csb pin 1 = dout pin is tri-state when csb is hi (default) d3 0 dout pint output drive select. 0 = 1x (dly<4.4ns) 1 = 4x (dly<3.1ns, default) d2 0 set to recommended value. d1 0 temp sensor comparator and clock enable. 0 = disable (default) 1 = enable d0 0 temp sensor adc trigger. 0 = not trigger adc readout (default) 1 = trigger adc readout, adc is disabled automatically after readout inishes. see detailed description, section temperature sensor readout through dout pin. MAX2839 2.3ghz to 2.7ghz mimo wireless broadband rf transceiver www.maximintegrated.com maxim integrated 27 downloaded from: http:///
table 13. address 10, tx_top spi register 1 (default = 00c hex ) table 14. address 11, temperature sensor 5-bit adc outputs (default = 004 hex ) table 15. address 12, hpfsm register 1 bits (default = 24f hex ) data bits default description d9:d5 00000 set to recommended value. d4:d2 011 adjust the bandwidth of tx am detector baseband ilter. 000 = default +12% 011 = default bandwidth 111 = default C 16% d1:d0 00 tx am detector baseband gain control. 00 = default minimum gain 01 = +10db 10 = +20db 11 = +30db data bits default description d9:d0 0000000100 set to recommended value. data bits default description d9:d7 100 rxvga 600khz highpass corner duration triggered by b7 and b6 switching. 000 = 0s 001 = 0.8s 010 = 1.6s 011 = 2.4s 100 = 3.2s (default) 101 = 4.0s 110 = 4.8s 111 = stay 1 d6:d4 100 rxvga 600khz highpass corner duration triggered by rxen rising edge. 000 = 0s 001 = 0.8s 010 = 1.6s 011 = 2.4s 100 = 3.2s (default) 101 = 4.0s 110 = 4.8s 111 = stay 1 d3:d2 11 rxvga 10mhz highpass corner duration triggered by b7 and b6 switching. 00 = 0s 01 = 0.4s 10 = 0.8s 11 = 1.2s (default) d1:d0 11 rxvga 10mhz highpass corner duration triggered by rxen rising edge. 00 = 0s 01 = 0.4s 10 = 0.8s 11 = 1.2s (default) MAX2839 2.3ghz to 2.7ghz mimo wireless broadband rf transceiver www.maximintegrated.com maxim integrated 28 downloaded from: http:///
table 16. address 13, hpfsm register 2 bits (default = 150 hex ) data bits default description d9:d8 01 rxvga 1khz highpass corner duration triggered by rxen rising edge. 00 = 0s 01 = 3.2s (default) 10 = 6.4s 11 = 9.6s d7:d6 01 rxvga 30khz highpass corner duration triggered by b7 and b6 switching. 00 = 0s 01 = 3.2s (default) 10 = 6.4s 11 = 9.6s d5:d4 01 rxvga 30khz highpass corner duration triggered by rxen rising edge. 00 = 0s 01 = 3.2s (default) 10 = 6.4s 11 = 9.6s d3:d2 00 rxvga 100khz highpass corner duration triggered by b7 and b6 switching. 00 = 0s (default) 01 = 3.2s 10 = 6.4s 11 = 9.6s d1:d0 00 rxvga 100khz highpass corner duration triggered by rxen rising edge. 00 = 0s (default) 01 = 3.2s 10 = 6.4s 11 = 9.6s MAX2839 2.3ghz to 2.7ghz mimo wireless broadband rf transceiver www.maximintegrated.com maxim integrated 29 downloaded from: http:///
table 17. address 14, hpfsm register 3 bits (default = 3c5 hex ) table 18. address 15, hpfsm register 4 bits (default = 201 hex ) data bits default description d9 1 pa drv/dac on/off gating by vas txool and pll ld. 0 = independent of txool and ld 1 = relock when txool = 1 or ld = 0 (default) d8 1 rxvga hpfsm re-triggered by b7 and b6. 0 = disable 1 = enable (default) d7:d6 11 rxvga highpass corner on-hold selection only during mode2 when rxhp = 1. 00 = 1khz 01 = 30khz 10 = 100khz 11 = 600khz (default) d5:d4 00 rxvga inal highpass corner selection. 00 = 100hz (default) 01 = 1khz 10 = 30khz 11 = 100khz d3:d2 01 rxvga hpca and hpcd rising edge delay for 100k/30k/1k/100hz highpass corner. 00 = 0s 01 = 0.2s (default) 10 = 0.4s 11 = 0.6s d1:d0 01 rxvga 1khz highpass corner duration triggered by b7 and b6 switching. 00 = 0s 01 = 3.2s (default) 10 = 6.4s 11 = 9.6s data bits default description d9 1 highpass corner use of rxhp. 0 = mode #1 does not require rxhp 1 = mode #2 requires use of rxhp (default) d8:d7 00 set to recommended value. d6 0 sequence bypass during rxhp 1-->0 transition. 0 = switch from hpc_stop_m2<1:0> and programmed sequence (default) 1 = switch from hpc_stop_m2<1:0> directly to hpc_stop<1:0> d5:d1 00000 set to recommended value. d0 1 rxvga hpfsm clock divider. 0 = for 20mhz crystal 1 = for 40mhz crystal (default) MAX2839 2.3ghz to 2.7ghz mimo wireless broadband rf transceiver www.maximintegrated.com maxim integrated 30 downloaded from: http:///
table 19. address 16, building block spi enable control (default = 01c hex ) table 21. address 18, synthesizer fractional divide ratio #2 (default = 155 hex ) table 20. address 17, synthesizer fractional divide ratio #1 (default = 155 hex ) table 22. address 19, synthesizer integer divide ratio (default = 153 hex ) data bits default description d9:d8 00 set to recommended value. d7 0 pa bias dac tx mode enable. enable pa bias dac only in tx mode. turn on delay is controlled by address 28<9:6>. 0 = disable (default) 1 = enable when pin txenable = 1 d6 0 pa bias dac spi enable. enable pa bias dac in all modes except shut down. turn-on delay is controlled by address 27<9:6>. 0 = disable (default) 1 = enable except during shut down mode d5:d2 0111 set to recommended value. d1 0 rx/tx calibration mode enable. rx or tx mode is selected by pin rxen or txen. 0 = normal operation (default) 1 = calibration mode d0 0 chip-enable bit. logic and with pin enable to enable/disable the whole chip except crystal oscillator and clkout pin buffer. 0 = disable (default) 1 = enable data bits default description d9:d0 0101010101 synthesizer 20-bit fractional divide ratio bit<9:0>, combine with address 18 d<9:0> to form the whole fractional word. data bits default description d9:d0 0101010101 synthesizer 20-bit fractional divide ratio bit<19:10>, combine with address 17 d<9:0> to form the whole fractional word data bits default description d9:d8 01 lo generation band switch control for optimal tx spur. 00 = 2300~2399.99mhz 01 = 2400~2499.99mhz (default) 10 = 2500~2599.99mhz 11 = 2600~2700mhz d7:d0 01010011 synthesizer 8-bit integer divide ratio MAX2839 2.3ghz to 2.7ghz mimo wireless broadband rf transceiver www.maximintegrated.com maxim integrated 31 downloaded from: http:///
table 23. address 20, synthesizer configuration#1 (default = 249 hex ) table 25. address 22, vco auto-select (vas) configuration (default = 1a9 hex ) table 24. address 21, synthesizer configuration#2 (default = 02d hex ) data bits default description d9:d6 1001 set to recommended value. d5 0 clkout buffer drive. 0 = 1x drive, default 1 = 4x drive d4:d3 01 set to recommended value. d2:d1 00 reference divider ratio.00 = divide-by-1 (default) 01 = divide-by-2 10 = divide-by-4 11 = divide-by-8 d0 1 set to recommended value. data bits default description d9:d0 0000101101 set to recommended value. data bits default description d9:d8 01 set to recommended value. d7 1 vas triggering by address 17 enable. see address 17 deinitions for details. 0 = disable for small frequency adjustment (i.e.~100khz). 1 = enable for channel switching (default) d6:d5 01 vas delay counter ratio. delay = txtal * vas_div<2:0> * vas_dly<1:0> * 7. 00 = 16 01 = 32 (default) 10 = 64 11 = 128 d4:d2 010 vas clock divide ratio. 000 = 8 001 = 9 010 = 10 (default) 110 = 14 111 = 2 d1 0 vas relock mode select. 0 = relock starting at subband 15 (default) 1 = relock starting at present subband for short acquisition time. d0 1 vas operating mode select. 0 = select vco subband by spi address 23 d<4:0> (vas_spi<4:0>) 1 = select vco subband by vas (default) MAX2839 2.3ghz to 2.7ghz mimo wireless broadband rf transceiver www.maximintegrated.com maxim integrated 32 downloaded from: http:///
table 27. address 24, crystal oscillator configuration (default = 180 hex ) table 26. address 23, lo miscellaneous configuration (default = 24f hex ) table 28. address 25, voltage-controlled oscillator (vco) configuration (default = 000 hex ) data bits default description d9:d7 100 set to recommended value. d6:d5 10 crystal oscillator bias select. 00 = 240a for 20mhz 01 = 420a for 20mhz 10 = 600a for 40mhz (default) 11 = 780a for 40mhz d4:d0 01111 vas subband spi overwrite. active when address 22 d<0> (vas_mode) = 0. 00000 = minimum frequency 01111 = 15 (default) 11111 = maximum frequency data bits default description d9 0 crystal oscillator core enable. enable except for shut down mode.0 = disable (default) 1 = enable d8 1 clkout divide ratio. 0 = divide-by-1 1 = divide-by-2 (default) d7 1 set to recommended value. d6:d0 0000000 crystal oscillator frequency tuning. 0000000 = maximum frequency (default) 1111111 = minimum frequency data bits default description d9:d0 0000000000 set to recommended value. MAX2839 2.3ghz to 2.7ghz mimo wireless broadband rf transceiver www.maximintegrated.com maxim integrated 33 downloaded from: http:///
table 29. address 26, lo generation (logen) configuration (default = 3c0 hex ) table 30. address 27, pa driver configuration (default = 200 hex ) data bits default description d9:d6 1111 vas test signal select. delivered to dout output mux and selected by address 9 d<7:5> (dout_sel<2:0>). 0000 = vco_bsw<0> 0001 = vco_bsw<1> 0010 = vco_bsw<2> 0011 = vco_bsw<3> 0100 = vco_bsw<4> 0101 = vtune_adc<0> 0110 = vtune_adc<1> 0111 = vtune_adc<2> 1000 = vasa 1001 = vase 1010 = vasa 1011 = vase 11xx = 0 1111 = 0 (default) vco_bsw<4:0> = vco 5-bit frequency band switch determined by vas. vtune_adc<2:0> = vco vtune (i.e. vcpoutp) adc output. d5:d4 00 set to recommended value. d3 0 logen rx/tx gm enable 0 = depends on rx/tx enable pins (default) 1 = enable both rx/tx output (required for rx loop-back calibration) d2:d0 000 set to recommended value. data bits default description d9 1 set to recommended value. d8 0 tx dc offset spi adjust enable. 0 = by fuse (default) 1 = by spi d7 0 tx vga gain spi control enable. 0 = by pin (default) 1 = by spi address 29 d<5:0> d6 0 tx lo i/q phase spi adjust enable. 0 = by trim (default) 1 = by address 27 d<5:0> d5:d0 000000 tx lo i/q phase spi adjust. active when address 27 d<6> (txlo_iq_spi_en) = 1. as trim word for fuse trim. 000000 = +4deg (q lags i by 94degs, default) 011111 = +0deg 111111 = -4deg (q lags i by 86degs) MAX2839 2.3ghz to 2.7ghz mimo wireless broadband rf transceiver www.maximintegrated.com maxim integrated 34 downloaded from: http:///
table 31. address 28, pa bias dac (padac) configuration (default = 0c0 hex ) table 32. address 29, tx gain configuration (default = 03f hex ) table 33. address 30, tx lo i/q correction (default = 380 hex ) data bits default description d9:d6 0011 padac turn-on delay control. 0000 = 0s 0001 = 0s 0010 = 0.5s 0011 = 1.0s (default) 1111 = 7.0s d5:d0 000000 padac output current control. active when address 27 d<5> = 1 (padac_iv). 000000 = 0a (default) 000001 = 5a 111111 = 315a data bits default description d9:d6 0000 set to recommended value. d5:d0 111111 tx vga spi gain control. active when address 27 d<7> (txvga_gain_spi_en) = 1. 000000 = min attenuation 111111 = max attenuation (default) data bits default description d9 1 pa dac voltage mode output select. active when address 30 d<8> (padac_iv) = 0. 0 = logic 0 output 1 = logic 1 output (default) d8 1 pa dac i/v output select. 0 = voltage output 1 = current output (default) d7:d6 00 set to recommended value. d5:d0 000000 tx dc offset correction for i-channel. active when address 27 d<8> (tx_dccorr_spi_en) = 1. as trim word for fuse trim. 000000 = 992/0a (+/-ve offset current, default) 000001 = 960/32a 000010 = 928/64a 011111 = 512/480a 111111 = 0/992a MAX2839 2.3ghz to 2.7ghz mimo wireless broadband rf transceiver www.maximintegrated.com maxim integrated 35 downloaded from: http:///
table 34. address 31, tx dc correction configuration (default = 340 hex ) data bits default description d9 1 pa dac clock divide ratio. 0 = for 20mhz crystal clock 1 = for 40mhz crystal clock (default) d8:d6 101 set to recommended value. d5:d0 000000 tx dc offset correction for q-channel. active when address 27 d<8> (tx_dccorr_spi_en) = 1. as trim word for fuse trim. 000000 = 992/0a (+/-ve offset current, default) 000001 = 960/32a 000010 = 928/64a 011111 = 512/480a 111111 = 0/992a MAX2839 2.3ghz to 2.7ghz mimo wireless broadband rf transceiver www.maximintegrated.com maxim integrated 36 downloaded from: http:///
56 55 54 53 52 51 50 49 48 47 46 45 44 43 15 16 17 18 19 20 21 22 23 24 25 26 27 28 42 41 40 39 38 37 36 35 34 33 32 31 30 29 1 2 3 4 5 6 7 8 9 10 11 12 13 14 rx basbandhpf control rx/tx gain control rx gaincontrol serialinput serialoutput serialinput pll filter tx output rx b input tx inputs rx a input rx a outputs imux qmux crystal oscillator/ buffer pll serial interface sclk temp sensor imux qmux rssi mux rssi 900 am detector imux/qmux + rxhpb6 b7 rssi rxbbqb- rxbbqb+rxbbib+ rxbbib- din dout cs vccvcovcobyp gndvco gndcp cpout+ cpout- xtal1 vccxtal vcccp refclk clkout enable sclk vcctxmx pabias b5 b1 gndrxlna_a vccrxlna_a b0 load vccrxlna_b gndrxlna_b rxinb+ rxinb- b4b3 vcctxpad b2 txout+ txout- rxbbia- vccrxflvccrxvga rxbbia+ rxbbqa- rxbbqa+ txbbi- txbbi+ txbbq+ txbbq- vccrxmx rxtx rxina- rxina+ mode control rx gain control rx gain select rx/tx gain control rx/tx gain control rx/tx gain control rx/tx gain control serial input mode control reference clock output rx boutputs MAX2839 serial interface MAX2839 2.3ghz to 2.7ghz mimo wireless broadband rf transceiver www.maximintegrated.com maxim integrated 37 block diagram/typical operating circuit downloaded from: http:///
56 55 54 53 52 51 50 49 48 47 46 45 44 43 15 16 17 18 19 20 21 22 23 24 25 26 27 28 42 41 40 39 38 37 36 35 34 33 32 31 30 29 1 2 3 4 5 tqfn + 6 7 8 9 10 11 12 13 14 MAX2839 gndcp cpout+ cpout- xtal1 vccxtal vcccp refclk clkout enable sclk vcctxmx pabias b5 b1 rxhpb6 b7 rssi rxbbqb- rxbbqb+rxbbib+ rxbbib- din dout cs vccvcovcobyp gndvco rxbbia- vccrxflvccrxvga rxbbia+ rxbbqa- rxbbqa+ txbbi- txbbi+ txbbq+ txbbq- vccrxmx rxtx rxina- rxina+ gndrxlna_a vccrxlna_a b0 load vccrxlna_b gndrxlna_b rxinb+ rxinb- b4b3 vcctxpad b2 txout+ txout- *ep *ep = exposed pad. MAX2839 2.3ghz to 2.7ghz mimo wireless broadband rf transceiver www.maximintegrated.com maxim integrated 38 pin conigurationchip information process: bicmos package information for the latest package outline information and land patterns (footprints), go to www.maximintegrated.com/packages . note that a +, #, or - in the package code indicates rohs status only. package drawings may show a different suffix character, but the drawing pertains to the package regardless of rohs status. package type package code document no. land pattern no. 56 tqfn-ep t5688+2 21-0135 90-0046 downloaded from: http:///
revision number revision date description pages changed 0 2/08 initial release 1 3/08 corrected ordering information and pin 42 in pin description 1, 19 2 7/15 added new temperature sensor readout through dout pin , vas operating procedure , vas readout , and vco subband selection through spi sections. added register and bit descriptions. 20C36 maxim integrated cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a maxim integrated product. no circuit patent licenses are implied. maxim integrated reserves the right to change the circuitry and speciications without n otice at any time. the parametric values (min and max limits) shown in the electrical characteristics table are guaranteed. other parametric values quoted in this data sheet are provided for guidance. maxim integrated and the maxim integrated logo are trademarks of maxim integrated products, inc. ? 2015 maxim integrated products, inc. 39 MAX2839 2.3ghz to 2.7ghz mimo wireless broadband rf transceiver revision history for pricing, delivery, and ordering information, please contact maxim direct at 1-888-629-4642, or visit maxim integrateds website at www.maximintegrated.com. downloaded from: http:///

▲Up To Search▲

Price & Availability of MAX2839

	To Download MAX2839 Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .