View RFAC3612_8212909.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

rf micro devices inc . 7628 thorndike road, greensboro, nc 27409 - 9421 ds1 40530 for sales or technical support, contact rfmd at +1.336.678.5570 or customerservice@rfmd.com . rf micro devices ? and rfmd ? are trademarks of rfmd, llc. bluetooth is a trademark owned by bluetooth sig, inc., u.s.a. and licensed for use by rfmd. all other trade names, trademarks, and registered trademarks are the pr operty of their respective owners. ?2013, rf micro devices, inc. 1 of 15 RFAC3612 6 - bit, pac (programmable array of capacitors) the RFAC3612 is a 6 - bit, 64 - state pac (programmable array of capacitors) for tunable rf applications. the RFAC3612 is optimized for series configuration but can also be applied in shunt configuration. the high power handling, high q and excellent linearity makes it ideal fo r use in antenna tuning , tunable filters and tunable matching networks. the RFAC3612 includes an integrated ldo (low drop out) regulator, which enables operation from a very wide supply range from 2.4v to 3.5v. the state of the RFAC3612 pac is cont rolled by a 3 wire spi compatible interface. all pins are esd protected to ensure 2kv hbm esd tolerance. RFAC3612 is packaged in a very compact 2.0mm x 2.5mm, 10 - pin package. functional block diagram ordering information RFAC3612 sq sample b ag with 25 pieces RFAC3612 sr 7" reel with 100 pieces RFAC3612 tr7 7 " reel with 2500 pieces RFAC3612 pck - 410 0.5ghz to 3 ghz pcba with 5 - piece sample bag package: 1 0 - pin, 2.0mm x 2 .5 mm features 6 - bit, 64 - state programmable capacitor array 3 wire spi compatible control programmable shunt switches on both rf ports for high isolation operation w ide tuning range (0.47pf to 13 pf) high rf voltage handling ( 44 vpk) high linearity wide voltage supply range (2.4v to 3.5v) low current consumption (64 a typical) 2kv hbm eds tolerance on all ports simulate in your design with ads or awr s - parameter model kit , available on request applications antenna tuning networks tunable rf filters tunable rf matching networks phase shifters RFAC3612
rf micro devices inc . 7628 thorndike road, greensboro, nc 27409 - 9421 ds1 40530 for sales or technical support, contact rfmd at +1.336.678.5570 or customerservice@rfmd.com . rf micro devices ? and rfmd ? are trademarks of rfmd, llc. bluetooth is a trademark owned by bluetooth sig, inc., u.s.a. and licensed for use by rfmd. all other trade names, trademarks, and registered trademarks are the pr operty of their respective owners. ?2013, rf micro devices, inc. 2 of 15 absolute maximum ratings parameter rating unit power supply voltage (v dd ) - 0.3 to 3.9 v logic input dc voltage (v cb ) - 0.3 to 2.8 v esd voltage hbm 2 kv storage temperature - 40 to 150 c max peak single - ended rf voltage between rf1/rf2 and ground , shunt switches disabled rf1 = 4 5 v pk rf2 = 4 3 v pk cw input power, 50 ? systems, rf1 or rf2, cmin, shunt switches disabled 37 dbm cw input power, 50 ? systems, shunt, rf1, cmin, shunt switches disabled 42.5 dbm cw input power, 50 ? systems, rf1 or rf2, shunt switches enabled 29 dbm caution! esd sensitive device. rfmd green: rohs status based on eu directive 2011/65/eu (at time of this document revision) , halogen free per iec 61249 - 2 - 21, < 1000ppm each of antimony trioxide in polymeric materials and red phosphorus as a flame retardant, and <2% antimony in solder. exceeding any one or a combination of the absolute maximum rating conditions may cause permanent damage to the device. extended application of absolute maximum r ating conditions to the device may reduce device reliability. specified typical performance or functional operation of the device under absolute maximum rating conditions is not implied. recommended operating condition parameter specification unit min typ max operating temperature range - 40 +85 c operating junction temperature c supply voltage 2.4 3.5 v electrical specifications parameter specification unit condition min typ max operating ranges power supply current (i dd ) 63 85 a rf1 = - 10dbm input logic control voltage high (v ih ) 1.2 2.8 v input logic control voltage low (v il ) 0 0. 6 3 v max peak single - ended rf voltage between rf1/rf2 and gnd (v rf pk ) 44 v pk rf1 42 v pk rf2 input power with rf1 and/or rf2 shunt switches enable d 27 dbm dc voltage at rf1 and rf2 ports (v rf, dc ) 1 0 v operating frequency range 0.5 3 ghz series configuration, linear parameters nominal conditions: v high 1.8v, v low 0.3v, vdd = 2.85v, temp = 25 c, rf1 and rf2 ports terminated to z0 = 50 ? c s 2 min series capacitance, state 0 0.41 0.46 0.51 pf
rf micro devices inc . 7628 thorndike road, greensboro, nc 27409 - 9421 ds1 40530 for sales or technical support, contact rfmd at +1.336.678.5570 or customerservice@rfmd.com . the information in this publication is believed to be accurate. however, no responsibility is assumed by rf micro devices, in c. ("rfmd") 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 rfmd. rfmd reserves the right to change component ci rcuitry, recommended application circuitry and specifications at any time without prior notice. 3 of 15 RFAC3612 parameter specification unit condition min typ max series capacitance, state 1 0.59 0. 66 0.72 pf series capacitance, state 2 0.77 0. 86 0.91 pf series capacitance, state 4 1.13 1.26 1.38 pf series capacitance, state 8 1.85 2.05 2.26 pf series capacitance, state 16 3.28 3.64 4.01 pf series capacitance, state 32 6.15 6.83 7.51 pf max series capacitance, state 63 11.7 13 14.3 pf capacitance step (c step series ) 0.2 pf port capacitance to ground ( c p ) 2 0.4 pf total series inductance C two sided (l s ) 2 0. 8 nh series self - resonance frequency (f res series ) state 16 2700 mhz state 32 2130 mhz state 63 1625 mhz r p1 2 2.5 ? r p2 2 16 ? when either shunt switch is on, the rp2 on that side reduces to this value 4800 ? normal operation with shunt switches open quality factor (rf2 port grounded, inductance removed ) (q) state 0 23 f = 1ghz state 31 17 state 63 15 state 0 42 f = 2ghz state 31 8 series configuration, nonlinear parameters second harmonic, 2 - f 0 (p 2h series ) states 0 to 3 - 72 - 43 dbm p fwd = 35dbm, f 0 = 900mhz states 4 to 63 - 55 - 40 dbm p fwd = 36dbm, f 0 = 900mhz states 0 to 63 - 70 dbm p fwd = 33dbm, f 0 = 1910mhz third harmonic, 3 - f 0 (p 3h series ) states 0 to 7 - 60 - 34 dbm p fwd = 35dbm, f 0 = 900mhz states 8 to 63 - 59 - 40 dbm p fwd = 36dbm, f 0 = 900mhz
rf micro devices inc . 7628 thorndike road, greensboro, nc 27409 - 9421 ds1 40530 for sales or technical support, contact rfmd at +1.336.678.5570 or customerservice@rfmd.com . the information in this publication is believed to be accurate. however, no responsibility is assumed by rf micro devices, in c. ("rfmd") 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 rfmd. rfmd reserves the right to change component ci rcuitry, recommended application circuitry and specifications at any time without prior notice. 4 of 15 RFAC3612 parameter specification unit condition min typ max states 0 to 63 - 65 dbm p fwd = 33 dbm, f 0 = 1910 mhz series configuration, nonlinear parameters C cont. input ip2 C states 0 to 63 (ip2 series ) cell low 115 dbm see ip2 / ip3 test conditions table below cell high 132 dbm imt low 129 dbm imt high 130 dbm see ip2 / ip3 test conditions table below gps test 1 140 dbm gps test 2 140 dbm band 8 (800mhz to 960mhz) 126 dbm tone 1 at 20dbm bands 2, 4, 7, 11 (1428mhz to 2690mhz) 128 dbm tone 2 at - 15dbm input ip3 (states 0 to 63 (ip3 series ) cell (b5) 75 dbm see ip2 / ip3 test conditions table below imt (b1) 76 dbm sv C lte test 1 77 dbm sv C lte test 2 85 dbm band 8 (800mhz to 960mhz) 76 dbm tone 1 at 20dbm bands 2, 4, 7, 11 (1428mhz to 2690mhz) 70 dbm tone 2 at - 15dbm rf1 to rf2 spurious (all states no rf - 120 dbm 400mhz to 2700mhz 915mhz at 35dbm - 112 dbm 925mhz to 960mhz 1910mhz at 33dbm - 113 dbm 1930mhz to 1990mhz general electrical specifications power - up time ( t power - up ) 75 s time from vdd within specification to all specifications is met. switching time - small signal ( t switch, ss ) 15 s time from programming (falling edge of sclk of the 16 th bit) to 90% of capacitance change achieved stitching time C large signal ( t switch, ls ) 75 s time from programming (falling edge of sclk of the 16 th bit) to power handling and linearity specifications are met 3 - wire interface timing characteristics serial clock frequency (f sclk = 1/t sclk ) 3 26 mhz clock high and low time (t sclkhigh , t sclklow ) 0.45 x t sclk 0.55 x t sclk falling edge of cs to rising edge of sclk set - up time, start of telegram (t cs_sclk ) 10 ns
rf micro devices inc . 7628 thorndike road, greensboro, nc 27409 - 9421 ds1 40530 for sales or technical support, contact rfmd at +1.336.678.5570 or customerservice@rfmd.com . the information in this publication is believed to be accurate. however, no responsibility is assumed by rf micro devices, in c. ("rfmd") 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 rfmd. rfmd reserves the right to change component ci rcuitry, recommended application circuitry and specifications at any time without prior notice. 5 of 15 RFAC3612 parameter specification unit condition min typ max falling edge of sclk to rising edge of cs set - up time, end of telegram (t sclk _ sc ) 20 ns 3 - wire interface timing characteristics C cont. sdata to falling edge of sclk set - up time (t sdata _sclk ) 10 ns sdata hold time after falling edge of sclk (t sdata ) 10 ns cs high time for activation of programmed bits (t cs high ) 100 ns notes: 1. rf1 and rf2 ports are internally dc coupled and should not have any non - zero dc bias voltage during operation. 2. e quivalent circuit below for c s , c p , r s , l s /2, rp1, and rp2 3. corresponds to a minimum clock cycle time of 38.5ns.
rf micro devices inc . 7628 thorndike road, greensboro, nc 27409 - 9421 ds1 40530 for sales or technical support, contact rfmd at +1.336.678.5570 or customerservice@rfmd.com . the information in this publication is believed to be accurate. however, no responsibility is assumed by rf micro devices, in c. ("rfmd") 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 rfmd. rfmd reserves the right to change component ci rcuitry, recommended application circuitry and specifications at any time without prior notice. 6 of 15 RFAC3612 equivalent model equivalent circuit model parameters variable equation (state = 0, 1, ..., 63 units cs 0. 199 * state + 0. 46 pf rs 37 / (state + 35 / (state + 0.3)) + 0.25 ? rp1 2.5 ? rp2 4800 ? cp 0.4 pf ls/2 0. 4 nh note : equivalent circuit will provide simulation results very close to actual, but for best accuracy request s - parameters kit. c s l s / 2 r s c p c p r f 1 r f 2 r p 2 r p 2 r p 1 l s / 2 r p 1
rf micro devices inc . 7628 thorndike road, greensboro, nc 27409 - 9421 ds1 40530 for sales or technical support, contact rfmd at +1.336.678.5570 or customerservice@rfmd.com . the information in this publication is believed to be accurate. however, no responsibility is assumed by rf micro devices, in c. ("rfmd") 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 rfmd. rfmd reserves the right to change component ci rcuitry, recommended application circuitry and specifications at any time without prior notice. 7 of 15 RFAC3612 typical performance: t = 25c, v dd = 5v unless otherwise noted
rf micro devices inc . 7628 thorndike road, greensboro, nc 27409 - 9421 ds1 40530 for sales or technical support, contact rfmd at +1.336.678.5570 or customerservice@rfmd.com . the information in this publication is believed to be accurate. however, no responsibility is assumed by rf micro devices, in c. ("rfmd") 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 rfmd. rfmd reserves the right to change component ci rcuitry, recommended application circuitry and specifications at any time without prior notice. 8 of 15 RFAC3612 ip2 / ip3 test conditions band in - band frequency cw tone 1 cw tone 2 mhz mhz dbm mhz dbm ip2 test conditions cell low (band v) 881.5 836.5 +20 45 - 15 cell high (band v) 881.5 836.5 +26 1718 - 20 imt low (band i) 2140 1950 +20 190 - 15 imt high (band i) 2140 1950 +26 4090 - 20 gps test conditions gps test 1 1575 909 +21 2484 +1.5 gps test 2 1575 909 +14 2484 +1.5 ip3 test conditions cell (band v) 881.5 836.5 +26 791.5 - 20 imt (band i) 2140 1950 +26 1760 - 20 sv - lte test conditions sv - lte test 1 747 825 +11 786 +24 sv - lte test 2 872 827 +11 782 +24
rf micro devices inc . 7628 thorndike road, greensboro, nc 27409 - 9421 ds1 40530 for sales or technical support, contact rfmd at +1.336.678.5570 or customerservice@rfmd.com . the information in this publication is believed to be accurate. however, no responsibility is assumed by rf micro devices, in c. ("rfmd") 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 rfmd. rfmd reserves the right to change component ci rcuitry, recommended application circuitry and specifications at any time without prior notice. 9 of 15 RFAC3612 test set - up series configuration harmonics measurement set - up series configuration imds measurement set - up
rf micro devices inc . 7628 thorndike road, greensboro, nc 27409 - 9421 ds1 40530 for sales or technical support, contact rfmd at +1.336.678.5570 or customerservice@rfmd.com . the information in this publication is believed to be accurate. however, no responsibility is assumed by rf micro devices, in c. ("rfmd") 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 rfmd. rfmd reserves the right to change component ci rcuitry, recommended application circuitry and specifications at any time without prior notice. 10 of 15 RFAC3612 test set - up the RFAC3612 is controlled by a single direction 3 - wire spi compatible interface. the RFAC3612 has 3 logic input pins for: sclk: serial input, sdata: serial data input; cs: chip select the serial master initiates the start of the telegram by driving the chip select signal cs low. each bit in the 16 - bit telegram is clocked in by the slave on the falling edge of sclk. sdata bits consist of 3 groups: f0 to f7 : are fixed bits, these do not change. s0 to s1 : controls the rf1 and rf2 shunt switches d 5 to d0: is the 6 - bit data word, used for controlling the pac. sdata bits are clocked in the order shown below, with d5 being the first bit. t he pac activates th e clocked values of sdata on the falling edge of sclk of the 16 th bit. a quick overview of the telegram bits is shown below. telegram bits function and description f0 - f7 8 - bit set of fixed bits, must be set to 00100000 s1 data bit s1 , controls shunt switch on port rf2. 0 = shunt switch is off, 1 = shunt switch is on. after power - up the value of s1 is 0, i.e. shunt switch is off. s0 data bit s0 , controls shunt switch on port rf1. 0 = shunt switch is off, 1 = shunt switch is on. after power - up the value of s0 is 0, i.e. shunt switch is off. d0 - d5 data bit d0 - d5, controls the state of pac. (d5 is most significant bit, d0 is least significant bit) . after power - up the value of d0 - d5 is 000000, i.e. state 0. m s b l s b f 6 f 5 f 4 f 2 f 3 f 7 s c l k s d a t a c s f 1 f 0 s 1 d 5 s 0 d 4 d 3 d 2 d 0 d 1 t s c l k t s d a t a _ s c l k t c s _ s c l k t s c l k _ c s t c s h i g h t s d a t a
rf micro devices inc . 7628 thorndike road, greensboro, nc 27409 - 9421 ds1 40530 for sales or technical support, contact rfmd at +1.336.678.5570 or customerservice@rfmd.com . the information in this publication is believed to be accurate. however, no responsibility is assumed by rf micro devices, in c. ("rfmd") 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 rfmd. rfmd reserves the right to change component ci rcuitry, recommended application circuitry and specifications at any time without prior notice. 11 of 15 RFAC3612 equivalent circuit parameters s1 s0 d5 d4 d3 d2 d1 d0 rs ( ? ) ls/2 (nh) cs (pf) state 0 0 0 0 0 0 0 0 0 0.61 0.35 0.46 state 1 0 0 0 0 0 0 0 1 1.62 0.38 0.66 state 2 0 0 0 0 0 0 1 0 2.82 0.38 0.86 state 3 0 0 0 0 0 0 1 1 2.31 0.37 1.06 state 4 0 0 0 0 0 1 0 0 4.32 0.45 1.26 state 5 0 0 0 0 0 1 0 1 3.48 0.41 1.46 state 6 0 0 0 0 0 1 1 0 3.21 0.47 1.65 state 7 0 0 0 0 0 1 1 1 2.73 0.44 1.85 state 8 0 0 0 0 1 0 0 0 3.72 0.50 2.05 state 9 0 0 0 0 1 0 0 1 3.30 0.50 2.25 state 10 0 0 0 0 1 0 1 0 2.94 0.45 2.45 state 11 0 0 0 0 1 0 1 1 2.61 0.45 2.65 state 12 0 0 0 0 1 1 0 0 2.73 0.43 2.85 state 13 0 0 0 0 1 1 0 1 2.49 0.42 3.05 state 14 0 0 0 0 1 1 1 0 2.34 0.41 3.25 state 15 0 0 0 0 1 1 1 1 2.13 0.41 3.45 state 16 0 0 0 1 0 0 0 0 2.58 0.46 3.64 state 17 0 0 0 1 0 0 0 1 2.37 0.45 3.84 state 18 0 0 0 1 0 0 1 0 2.19 0.43 4.04 state 19 0 0 0 1 0 0 1 1 2.07 0.43 4.24 state 20 0 0 0 1 0 1 0 0 2.07 0.42 4.44 state 21 0 0 0 1 0 1 0 1 1.95 0.41 4.64 state 22 0 0 0 1 0 1 1 0 1.83 0.40 4.84 state 23 0 0 0 1 0 1 1 1 1.74 0.40 5.04 state 24 0 0 0 1 1 0 0 0 1.83 0.44 5.24 state 25 0 0 0 1 1 0 0 1 1.77 0.44 5.44 state 26 0 0 0 1 1 0 1 0 1.68 0.42 5.63 state 27 0 0 0 1 1 0 1 1 1.59 0.42 5.83 state 28 0 0 0 1 1 1 0 0 1.59 0.41 6.03 state 29 0 0 0 1 1 1 0 1 1.50 0.41 6.23 state 30 0 0 0 1 1 1 1 0 1.47 0.40 6.43 state 31 0 0 0 1 1 1 1 1 1.41 0.40 6.63 state 32 0 0 1 0 0 0 0 0 1.50 0.40 6.83 state 33 0 0 1 0 0 0 0 1 1.44 0.40 7.03 state 34 0 0 1 0 0 0 1 0 1.38 0.40 7.23
rf micro devices inc . 7628 thorndike road, greensboro, nc 27409 - 9421 ds1 40530 for sales or technical support, contact rfmd at +1.336.678.5570 or customerservice@rfmd.com . the information in this publication is believed to be accurate. however, no responsibility is assumed by rf micro devices, in c. ("rfmd") 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 rfmd. rfmd reserves the right to change component ci rcuitry, recommended application circuitry and specifications at any time without prior notice. 12 of 15 RFAC3612 s1 s0 d5 d4 d3 d2 d1 d0 rs ( ? ) ls/2 (nh) cs (pf) state 35 0 0 1 0 0 0 1 1 1.32 0.40 7.43 state 36 0 0 1 0 0 1 0 0 1.32 0.40 7.62 state 37 0 0 1 0 0 1 0 1 1.26 0.40 7.82 state 38 0 0 1 0 0 1 1 0 1.23 0.40 8.02 state 39 0 0 1 0 0 1 1 1 1.23 0.40 8.22 state 40 0 0 1 0 1 0 0 0 1.23 0.38 8.42 state 41 0 0 1 0 1 0 0 1 1.17 0.38 8.62 state 42 0 0 1 0 1 0 1 0 1.14 0.38 8.82 state 43 0 0 1 0 1 0 1 1 1.08 0.38 9.02 state 44 0 0 1 0 1 1 0 0 1.08 0.38 9.22 state 45 0 0 1 0 1 1 0 1 1.05 0.38 9.42 state 46 0 0 1 0 1 1 1 0 1.05 0.38 9.61 state 47 0 0 1 0 1 1 1 1 1.02 0.38 9.81 state 48 0 0 1 1 0 0 0 0 1.05 0.38 10.01 state 49 0 0 1 1 0 0 0 1 1.02 0.38 10.21 state 50 0 0 1 1 0 0 1 0 0.99 0.38 10.41 state 51 0 0 1 1 0 0 1 1 0.99 0.38 10.61 state 52 0 0 1 1 0 1 0 0 0.99 0.38 10.81 state 53 0 0 1 1 0 1 0 1 0.96 0.38 11.01 state 54 0 0 1 1 0 1 1 0 0.91 0.38 11.21 state 55 0 0 1 1 0 1 1 1 0.89 0.36 11.41 state 56 0 0 1 1 1 0 0 0 0.91 0.38 11.60 state 57 0 0 1 1 1 0 0 1 0.91 0.37 11.80 state 58 0 0 1 1 1 0 1 0 0.86 0.37 12.00 state 59 0 0 1 1 1 0 1 1 0.86 0.37 12.20 state 60 0 0 1 1 1 1 0 0 0.86 0.37 12.40 state 61 0 0 1 1 1 1 0 1 0.86 0.37 12.60 state 62 0 0 1 1 1 1 1 0 0.81 0.36 12.80 state 63 0 0 1 1 1 1 1 1 0.79 0.36 13.00
rf micro devices inc . 7628 thorndike road, greensboro, nc 27409 - 9421 ds1 40530 for sales or technical support, contact rfmd at +1.336.678.5570 or customerservice@rfmd.com . the information in this publication is believed to be accurate. however, no responsibility is assumed by rf micro devices, in c. ("rfmd") 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 rfmd. rfmd reserves the right to change component ci rcuitry, recommended application circuitry and specifications at any time without prior notice. 13 of 15 RFAC3612 shunt switch table rf1 shunt switch rf2 shunt switch s1 s0 off off 0 0 on off 0 1 off on 1 0 on on 1 1 pin configuration top view
rf micro devices inc . 7628 thorndike road, greensboro, nc 27409 - 9421 ds1 40530 for sales or technical support, contact rfmd at +1.336.678.5570 or customerservice@rfmd.com . the information in this publication is believed to be accurate. however, no responsibility is assumed by rf micro devices, in c. ("rfmd") 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 rfmd. rfmd reserves the right to change component ci rcuitry, recommended application circuitry and specifications at any time without prior notice. 14 of 15 RFAC3612 pin names and descriptions pin name description 1 rf1 rf terminal 1 of pac 2 rf1 rf terminal 1 of pac 3 1 gnd ground pins 4 vdd power supply pin 5 s clk serial interface clock signal 6 cs enable pin 7 sdata serial interface data signal 8 rf2 2 rf terminal 2 of pac 9 rf2 2 rf terminal 2 of pac 10 1 gnd ground pins note s: 1. 2 ground pins are connected internally on die. the 2 pins should all be connected to pcb gnd. 2. when operating the pac in shunt configuration, it is recommended to ground rf2 rather than rf1. package outline drawing (dimensions in millimeters) evaluation board available with 1 port shunt and 2 port series configurations
rf micro devices inc . 7628 thorndike road, greensboro, nc 27409 - 9421 ds1 40530 for sales or technical support, contact rfmd at +1.336.678.5570 or customerservice@rfmd.com . the information in this publication is believed to be accurate. however, no responsibility is assumed by rf micro devices, in c. ("rfmd") 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 rfmd. rfmd reserves the right to change component ci rcuitry, recommended application circuitry and specifications at any time without prior notice. 15 of 15 RFAC3612 application guidelines a decoupling capacitor on vdd may be used for noise reduction. the one directional 3 - wire spi compatible interface with chip select is a very robust interface for on - board inter chip signaling. to further improve the robustness of the interface rfmd uses input level hysteresis on the 3 logic inputs. this gives good immunity to noise on the input lines. the pac is dc coupled on rf1 and rf2 ports, with a bias voltage of 0v. this means that the rf ports can be dc shorted to gnd, by e.g. an inductor, but they cannot be connected to any other device with a non - zero bias voltage without a dc blocking capacitor. application note turn on sequence = vdd spi rf turn off sequence = rf spi vdd branding diagram

▲Up To Search▲

Price & Availability of RFAC3612

	To Download RFAC3612 Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .