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1 of 12 rf micro devices, inc. 7628 thorndike road greensboro, nc 27409, usa tel (336) 664 1233 fax (336) 664 0454 http://www.rfmd.com ordering information summary optimum technology matching? applied si bjt si bi-cmos gainp/hbt gaas hbt sige hbt gan hemt gaas mesfet si cmos sige bi-cmos features bluetooth subsystem using the SIW1721B radio modem ext power single-ended lna and downconverter single-ended driver and upconverter adc dac reference pll modem clock generator SIW1721B radio modem reference clock clk circuit analog regulator digital regulator radio programming and control gfsk modulator gfsk demodulator mobile phone chip set integrated bluetooth baseband spi modem i/f & data the SIW1721B is a 2.4-ghz radio transceiver for bluetooth wireless technology. this highly integrated transceiver is specifically designed for use with a third party bluetooth baseband controller chipset requiring an external bluetooth rf transceiver. due to its low power cmos process, the design minimizes current draw in both active and standby modes. the SIW1721B combines a radio transceiver and gaussian frequency shift keying (gfsk) modem with digital control and interface logic. the ic also incorporates analog and digital voltage regulators and a reference phase lock loop (pll) capable of accepting various reference clock frequencies. the level of integration enables a low system cost with fewer external components. the SIW1721B is packaged in a 5-by-5-mm, pb-free, 32-pin qfn package that meets rohs (green) requirements. operating temperature range is guaranteed from -40c to +85c. SIW1721B bluetooth? radio modem see page 12 for details. 0 9 bluetooth? radio modem SIW1721B 60 0076 r00f SIW1721B radio modem ic ds october 6, 2006 ? integrated rf transceiver and modem for bluetooth wireless technology. ? manufactured using low-power 0.18-micron cmos process technology. ? digital baseband interface connects directly to an integrated bluetooth controller. ? direct conversion rf architecture improves receiver-blocking performance. ? low out-of-band spurious emissions minimize interference with mobile phone operations. ? hardware agc dynamically adjusts receiver performance in changing environments. ? 50 rf i/o does not need additional external impedance matching components. ? on-chip voltage regulation simplifies system design. ? -88 dbm receiver sensitivity and +2 dbm transmitter power typical performance specifications. ? bluetooth specification v2.0 qualified. complies with bluetooth specifications v1.1, v1.2 and v2.0. applications ? mobile phones with integrated controller for bluetooth wireless technology.
2 of 12 SIW1721B 60 0076 r00f SIW1721B radio modem ic ds description the following figure shows the SIW1721B radio modem functional block diagram. du ring the receive process, the radio signal is taken from the single-ended rf input pin that feeds into the low noise amplifier (lna). the signal from the lna is directly down-converted to i/q baseband, filtered with an anti-al iasing filter, and converted to a digital signal with a high resolution analog-to-digital converter. the critical channel f iltering is done in the digital domain for stable and repeatable performance. the signal is then processed by a high performanc e gfsk demodulator. the ic has multiple internal self- calibration circuits to maintain stable and repeatable perform ance from part-to-part as well as over the full temperature range. the ic has two fully integrated regulators: one for the radi o (analog regulator) and one for the digital logic (digital regulator). the digital regulator can be used to supply a blueto oth baseband controller. both regulators can be bypassed if external regulation is desired. note: when bypassing the analog regulator, the vbatt_ana and v cc_out pins must be tied t ogether and the external analog voltage (1.8 v) should be applied to the vbatt_ana pin. w hen bypassing the digital regulat or, the vbatt_dig pin should be left unconnected and the external digital voltage (1.8 v) should be applied to the vbb_out pin. the ic also provides power on reset and gl itch-free clock start-up. a reference pll can be enabled to support a number of different reference frequencies. digital control functions and a programming interface provid e radio modem control and a flexible interface to external bluetooth link controllers. radio interface an internal power control loop maintains a very stable rf_io si gnal level over the full temper ature range and from part to part. this means predictable and repe atable range at any temperature. modem interface the modem interface transfers the bluetooth data betw een the SIW1721B radio modem a nd the asic. for reference purposes, the pin description table (table 1) provides a brief description of typical interface modes. clock signals multiple reference clock frequencies can be used as a reference for the rf circuits, to synthesize clocks for most of the internal digital circuits, and to supply external processors with timing signals. serial programming interface (spi) the serial programming interface (spi) is used to access the internal registers of the siw1 721b radio modem. the spi is a synchronous serial interface that can be clocked to a nominal speed of 8mhz. power the SIW1721B radio modem includes both analog and digital volt age regulators. input options are based on factors such as voltage source, where internal regulators are used, and i/o voltage. lna 90 0 adc pll synthesizer 90 0 rf_io gfsk modem dac adc dac internal 50-ohm match network tx_bias idac register file system control hop_strobe tx_rx_switch rx_tx_data cd_txen power control enable_rm vtune chg_pump xtal_p/clk bb_clk vbatt_ana vbatt_dig vcc_out vbb_out reset_n vcc vdd_io pll control voltage regulators and power distribution clock distribution spi_ss spi_txd spi_rxd spi_clk serial programming interface (spi) SIW1721B block diagram
3 of 12 SIW1721B 60 0076 r00f SIW1721B radio modem ic ds pin description the SIW1721B radio modem?s radio and modem interface (spi), a single clock input, and supply voltage are required for proper operation. table 1. SIW1721B radio modem pin list name pad type description radio interface signal description rf_io analog combined 50 input and output pin in normal mode. rx only in power class 1 mode. idac analog power control to external power amplifier. this output provides a variable current source that can be used to control the external power amp. leave unconnected if not used. tx_rx_switch cmos output output signal to indicate the cu rrent state of the radio. the pol arity is programmable with the default set as: low=transmit mode. high=non-transmit mode. tx_bias analog bias for the output driver in norma l mode, transmit output in power class 1 mode. modem interface description rx_tx_data cmos bi-directional received sliced-mode data from radi o; or transmit data to radio. cd_txen cmos bi-directional dual function carrier detect and transmit enable . this bi-directional signal can be enabled through internal registers. during transmit, this pin can be used as an input to indicate valid transmit data (txen). during receive, this pin can be used as an output to indicate carrier detect (cd). input only, output, or bi-directional. enable_rm cmos input sleep/wake control signal from baseband contro ller. used to command the SIW1721B radio modem from idle to sleep mode, and to aw aken the SIW1721B radio modem from sleep mode. hop_strobe cmos input signal generated by the baseband to indicate the start of tx or rx ramp-up. reset_n cmos input reset for digital circuits only. state machines and internal registers reset to their default state. this signal is an asynchronous input with a minimum pulse width requirement of 10 s. clock signals description xtal_p/clk analog system clock crystal positive i nput or reference clock input. fo r additional information see the ?crystal requirements? and ?external reference requirements? sections. xtal_n analog system clock crystal negative input. if a refer ence clock frequency is used, this pin should be left unconnected. bb_clk cmos output selectable clock output to external baseband controller. five frequencies are supported (in mhz): reference frequency, reference frequency/2, 12, 13, 16, 32, 48, and 52. bb_clk stops oscillating when enable_rm is de-asserted (low). serial programming interface description spi_txd cmos output spi data output from SIW1721B. spi_rxd cmos input spi data input to SIW1721B. spi_clk cmos input clock input used for synchronous data transfer on the spi bus. spi_ss cmos input spi slave select that enable s the SIW1721B radio modem as the target. power signals description vbatt_ana power supply voltage to internal analog voltage regulator. vbatt_dig power supply voltage to internal digital voltage regulator. vcc_out power regulated output fr om internal analog regulator. vbb_out power regulated output from internal digital regulator. vcc power supply voltage to on-chip analog circuits. vdd_io power supply voltage to on-chip i/o interface. i/o pins: bb_clk, cd_txen, enable_rm, hop_strobe, reset_n, rx_tx_data, spi_clk, spi_rxd, spi_ss, spi_txd, tx_rx_switch. vbb_rdy cmos output this signal is used to indicate that the internal digital regulator is stable (vbb_out). other i/o description vrefp_cap analog decoupling capacitor for voltage reference for the internal a/d converter. vrefn_cap analog decoupling capacitor for voltage reference for the internal a/d converter. vtune analog pin for refe rence pll loop filter. chg_pump analog pin for rf pll loop filter.
4 of 12 SIW1721B 60 0076 r00f SIW1721B radio modem ic ds system specifications absolute maximum ratings recommended operating conditions esd rating electrical characteristics dc specification (t op =+25c, v dd_io =3.0v) ac characteristics (t op =+25c, v dd_io =3.0v, c load =15pf) parameter description min max unit v cc analog circuit supply voltage -0.3 3.63 v v dd_io i/o supply voltage -0.3 3.63 v v batt_ana analog regulator suppl y voltage -0.3 3.63 v v batt_dig digital regulator supply voltage -0.3 3.63 v t st storage temperature -55 +125 c rf max maximum rf input level ? +5 dbm note: absolute maximum ratings indicate limits beyond which the useful life of the device may be impaired or damage may occur. parameter description min max unit t op operating temperature (industrial grade) -40 +85 c v batt_ana supply for internal analog voltage regulator 2.3 3.63 v v batt_dig supply for internal digital voltage regulator 2.3 3.63 v v cc analog supply voltage 1.71 1.89 v v dd_io digital interface i/o supply voltage 1.62 3.63 v symbol description rating esd esd protection - all pins 1 2000 v 1 this device is a high performance rf integrated circuit with an esd rating of 2,000 volts (hbm conditions per mil-std-883, meth od 3015). handling and assembly of this device should only be done using appropriate esd controlled processes. symbol description min. typ. max. unit v il input low voltage gnd-0.1 ? 0.3*v dd_io v v ih input high voltage 0.7*v dd_io ? v dd_io v v ol output low voltage gnd ? 0.2*v dd_io v v oh output high voltage 0.8*v dd_io ? v dd_io v i oh output high current ? 500 ? a output high current (pins 16, 19) ? 4 ? ma i ol output low current ? 500 ? a output low current (pins 16, 19) ? 4 ? ma i ili input leakage current ? <1 1 a symbol description min. typ. max. unit t r rise time ? ? 30 ns rise time (pins 16, 19) ? ? 16 ns t f fall time ? ? 24 ns fall time (pins 16, 19) ? ? 13 ns
5 of 12 SIW1721B 60 0076 r00f SIW1721B radio modem ic ds current consumption (t op =+25c, v batt_ana , v batt_dig = 3.3 v) radio specification receiver specification 1 (v batt_ana , v batt_dig =3.3v, v cc =int. analog reg. output, and nominal 2 bluetooth test conditions) symbol description min. typ. max. unit i dd_sleep current during sleep mode ? 15 25 a i dd_idle current during idle, synthesizer not running ? 2 ? ma i dd_transmit current during continuous transmit ? 41 45 ma i dd_receive current during continuous receive ? 41 45 ma parameter description min typ max unit vco operating range frequency 2402 ? 2480 mhz pll lock time ? ? 55 100 s parameter description min typ max unit receiver sensitivity measured based on ber<0.1% ? -88 -82 dbm maximum usable signal measured based on ber<0.1% -10 +5 ? dbm c/i co-channel (0.1% ber) co-channel selectivity ? 8.0 11.0 db c/i 1mhz (0.1% ber) adjacent channel selectivity ? -4.0 0 db c/i 2mhz (0.1% ber) 2nd adjacent channel selectivity ? -38.0 -35.0 db c/i 3mhz (0.1% ber) 3rd adjacent channel selectivity ? -43 -40 db out-of-band blocking 3 30 mhz to 2000 mhz -10 ? ? dbm 2000 mhz to 2399 mhz -27 ? ? dbm 2498 mhz to 3000 mhz -27 ? ? dbm 3000 mhz to 12.75 ghz -10 ? ? dbm intermodulation max interferer level to maintain 0.1% ber, interference signals at 3 mhz and 6 mhz offset. -39 -36 ? dbm receiver spurious emission 30mhz to 1ghz ? ? -57 dbm 1 ghz to 12.75 ghz ? ? -47 dbm 1 measured into the chip with a 50 source and no band pass filter. 2 nominal and extreme bluetooth test conditions as defined by the bluetooth test specification. 3 out-of-band blocking guaranteed by design.
6 of 12 SIW1721B 60 0076 r00f SIW1721B radio modem ic ds transmitter specification 1 (v batt_ana , v batt_dig = 3.3 v, v cc = int. analog reg. output, and nom inal bluetooth test conditions) i ndustrial temperature performance 1 (v batt_ana , v batt_dig =3.3v and extreme bluetooth test conditions) parameter description min typ max units output rf transmit power at maximum power output level -2 +2 +6 dbm modulation characteristics 2 f1 avg 140 155 175 khz f2 max ( for at least 99.9% of all f2 max ) 115 ? ? khz f1 avg / f2 avg 0.8 ? ? khz initial carrier frequency accuracy ? -75.0 ? +75.0 khz carrier frequency drift one slot packet -25.0 ? +25.0 khz two slot packet -40.0 ? +40.0 khz five slot packet -40.0 ? +40.0 khz max drift rate ? ? 400 hz/ s 20 db occupied bandwidth bluetooth specification ? 900 1000 khz in-band spurious emission 2 mhz offset ? -74 -55.0 dbm >3 mhz offset ? -74 -55.0 dbm out-of-band spurious emission 30 mhz to 1 ghz, operating mode ? -70 -55.0 dbm 1 ghz to 12.75 ghz, operating mode 3 ? -70 -50.0 dbm 1.8 ghz to 1.9 ghz ? ? -62.0 dbm 5.15 ghz to 5.3 ghz ? ? -47.0 dbm 1 measured into the chip with a 50 source and no band pass filter. 2 the modulation characteristic is measured as per test trm/ca/07/c defined in the bluetooth test specification. 3 except transmit harmonics. parameter description min typ max unit receiver sensitivity measured based on ber<0.1% ? -88 -78 dbm output rf transmit power at maximum power output level -4 +2 +6 dbm modulation characteristics 2 f1 avg 140 155 175 khz f2 max ( for at least 99.9% of all f2 max ) 115 ? ? khz f1 avg / f2 avg 0.8 ? ? khz initial carrier frequency accuracy ? -75.0 ? +75.0 khz carrier frequency drift one slot packet -25.0 ? +25.0 khz two slot packet -40.0 ? +40.0 khz five slot packet -40.0 ? +40.0 khz max drift rate ? ? +400 hz/s 20 db occupied bandwidth bluetooth specification ? 900 1000 khz in-band spurious emission 2mhz offset ? -74 -40.0 dbm >3mhz offset ? -74 -55.0 dbm out-of-band spurious emission 30mhz to 1ghz, operating mode ? -70 -55.0 dbm 1ghz to 12.75ghz, operating mode 3 ? -70 -40.0 dbm 1.8ghz to 1.9ghz ? ? -62.0 dbm 5.15ghz to 5.3ghz ? ? -47.0 dbm 1 measured into the chip with a 50 source and no band pass filter. 2 the modulation characteristic is measured as per test trm/ca/07/c defined in the bluetooth test specification. 3 except transmit harmonics.
7 of 12 SIW1721B 60 0076 r00f SIW1721B radio modem ic ds external reference requirements it is possible to provide a number of reference frequencies th at are typical on most cellular phones directly into pin 26 (xtal_p/clk) of the SIW1721Bfig. the following reference fr equencies (in mhz) can be used: 3.84, 9.6, 12, 12.8, 13, 14.4, 15.36, 16, 16.8, 19.2, 19. 68, 19.8, 26, 32, 38.4, and 48. for other frequen cies, please contact applications support. parameter description min max unit phase noise 100 khz offset ? -100 dbc/hz 1 khz offset ? -120 dbc/hz 10 khz offset ? -140 dbc/hz drive level ac coupled amplitude 0.5 v cc v p-p dc coupled low peak voltage 0 0.3 v dc coupled high peak voltage v cc - 0.3 v cc v
8 of 12 SIW1721B 60 0076 r00f SIW1721B radio modem ic ds pin out (top view) pin assignments note: nc indicates no connect. SIW1721Bfig (32-pin qfn) pin pin name pin pin name 1 idac 17 vbb_out 2 vrefp_cap 18 vbatt_dig 3 vrefn_cap 19 rx_tx_data 4 vcc_out 20 vbb_ready 5 vbatt_ana 21 cd_txen 6 vcc 22 spi_ss 7 vcc 23 hop_strobe 8 chg_pump 24 nc 9 enable_rm 25 xtal_n 10 tx_rx_switch 26 xtal_p/clk 11 reset_n 27 vcc 12 spi_rxd 28 vtune 13 spi_clk 29 vcc 14 spi_txd 30 tx_bias 15 vdd_io 31 rf_io 16 bb_clk 32 vcc idac vrefp_cap vrefn_cap vcc_out vbatt_ana vcc vcc chg_pump enable_rm reset_n spi_rxd spi_clk vdd_io spi_txd bb_clk vbb_out vbatt_dig rx_tx_data vbb_ready cd_txen spi_ss hop_strobe nc xtal_n xtal_p/clk vcc vtune vcc vcc tx_bias rf_io ground pad on bottom 32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 tx_rx_switch SIW1721B note: nc indicates "no connect" or unused pins.
9 of 12 SIW1721B 60 0076 r00f SIW1721B radio modem ic ds radio modem application circuit for plastic qfn package (SIW1721Bfig) c11 180pf l1 2.7nh c4 1uf c9 1uf c1 8.2pf vdd_a c5 2.7pf c7 0.1uf c10 22pf c6 0.1uf c8 1pf r2 47k vdd_d u1 SIW1721B 5 mm x 5 mm 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 idac vrefp_cap vrefn_cap vcc_out vbatt_ana vcc vcc chg_pump enable_ rm tx_rx_switch reset_n spi_rxd spi_clk spi_txd vdd_io bb_clk vbb_out vbatt_dig rx_tx_data vbb_ready cd_txen spi_ss hop_strobe nc xtal_n xtal_p/clk vcc vtune vcc tx_bias rf_io vcc fl1 lfb312g45sg2a509 4 2 out i n antenna rx_bb/tx_bb hop_strobe spi_ss cd_txen vbb_ready clk_ref spi_mosi reset_n spi_clk spi_mis0 c2 18pf y1 osc, crystal 32mhz 1 3 c3 18pf l2 2.2nh place l1 close to pin 30 of the SIW1721B. place c1 as close as possible to l1 and ensure the ground of c1 is as close as possible to the paddle of the SIW1721B. the ground for c10 needs to be as close as possible to the paddle of the SIW1721B. keep the traces from r2 and c10 to pin 8 of the SIW1721B short. c4 and c9 must have 1 ohm < esr < 10 ohms. c4 and c9 must have 1 ohm < esr < 10 ohms. enable_rm keep the traces from c2 and c3 to pins 25 and 26 of the SIW1721B short.
10 of 12 SIW1721B 60 0076 r00f SIW1721B radio modem ic ds packaging and product marking package drawing 32-pin qfn drawing and dimensions product marking 32-pin qfn drawing 5 x 5 mm, 32-pin qfn notes: 1. shaded area indicates pin 1 location. 2. all units are in millimeters. 3. tolerances: .xx = as shown .xxx = as shown 3 5.00 sq. 4.75 sq. 2.37 typ 2 plcs .10 c .10 c 2 plcs -b- 2 plcs .10 c -a- .90 .85 .70 .65 .05 .00 .05 c -c- seating plane 12 max .60 .24 typ .30 .18 .50 .30 .50 3.65 3.35 sq. .10 cb 2 pin 1 id r.20 .10 c 2 plcs 2.50 typ b a a a b 1721bfig yyw w trace code
11 of 12 SIW1721B 60 0076 r00f SIW1721B radio modem ic ds carriers tape and reel SIW1721Bfig, 5 x 5 mm, 32-pin qfn, tape and reel details carrier tape basic dimensions are based on eia 481. the poc ket is designed to hold the part for shipping and loading onto smt manufacturing equipment, while protecting the body and the solder terminals from damaging stresses. the individual pocket design can vary from vendor to vendor, but width and pitch will be consistent. carrier tape is wound or placed onto a shipping reel either 330 mm (13 inches) in diameter or 178 mm (7 inches) in diameter. the center hub design is large enough to ensure the radius formed by the carrier tape around it does not put unnecessary stress on the parts. prior to shipping, moisture sensitive parts (msl level 2a-5a) are baked and placed into the pockets of the carrier tape. a cover tape is sealed over the top of the entire length of the carrier tape. the reel is sealed in a moisture barrier esd bag, which is placed in a cardboard shipping box. it is important to note that unused moisture sensitive parts need to be resealed in the moisture barrier bag. if the reels exceed t he exposure limit and need to be baked, most carrier tape and shipping reels are not rated as bakeable at 125c. if baking is required, devices may be baked according to section 4, table 4-1, column 8, of the joint industry standard ipc/jedec j-std-033a. the following tables provide useful information for carrier tape and reels used for shipping the devices described in this document. rfmd part number reel diameter inch (mm) hub diameter inch (mm) width (mm) pocket pitch (mm) feed units SIW1721Bfig-tr13 13 (330) 4 (102) 12 8 single 2500/reel SIW1721Bfigsr 7 (178) 2.4 (61) 12 8 single 100/reel peel test peel angle cover tape leader trailer peel speed 10?50 grams 165-180 o rs standard (anti-static) 500 mm (minimum 400 mm) 250 mm (minimum 160 mm) 300 mm/minute w p f ko bo ao ao = 5.30 .10 bo = 5.30 .10 f = 5.50 .05 ko = 1.83 .10 p = 8.00 .10 w = 12.00 +.30/-.10 notes: 1. all dimensions are in millimeters (mm). 2. unless otherwise specified, all dimension tolerances per eia-481. 4.00 .10 2.00 .05 15-inch trailer top view 15-inch leader ?1.50.10 1.75 .10 0.330.020 direction of feed pin 1 location part number yyw w trace code part number yyw w trace code part number yyw w trace code part number yyw w trace code part number yyw w trace code sprocket holes toward rear of reel
12 of 12 SIW1721B 60 0076 r00f SIW1721B radio modem ic ds the information in this publication is believed to be acc urate and reliable. however, no responsibility is assumed by rf micro devices for its use, nor for any infringement of patents, or other rights of third parties, resulting from its use. no license is granted by implication or otherwise under any patent or patent rights of rf micro devices, inc. rf micro devices reserves the right to change component circuitry, recommended application circuitry and specifications at any time without prior notice. rf micro devices?, rfmd?, optimum technology matching?, enabling wireless connectivity?, ultimateblue?, and the siw product name prefix are trademarks of rfmd, llc. bluetooth is a trademark owned by bluetooth sig, inc., u.s.a. and licensed for use by rf micro devices, inc. all other trade names, trademarks and registered trademarks are the property of their respective owners. ordering information part number operational temperature range 1 package ordering quantity SIW1721Bfig-t13 industrial 32-pin qfn 2500/reel SIW1721Bfigsr industrial 32-pin qfn 100/reel SIW1721Bfig industrial 32-pin qfn 25/sample bag SIW1721Bfigsb industrial 32-pin qfn 5/sample bag 1 industrial temperature range: -40c to +85c.

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