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1 of 11 optimum technology matching? applied gaas hbt ingap hbt gaas mesfet sige bicmos si bicmos sige hbt gaas phemt si cmos si bjt gan hemt functional block diagram rf micro devices?, rfmd?, optimum technology matching?, enabling wireless connectivity?, powerstar?, polaris? total radio? and ultimateblue? are trademarks of rfmd, llc. bluetooth is a trade- mark owned by bluetooth sig, inc., u.s.a. and licensed for use by rfmd. all other trade names, trademarks and registered tradem arks are the property of their respective owners. ?2006, rf micro devices, inc. product description 7628 thorndike road, greensboro, nc 27409-9421 for sales or technical support, contact rfmd at (+1) 336-678-5570 or sales-support@rfmd.com. ordering information lna vcc rx out tx in vreg pdetect vcc vcc vcc gnd ant c bt bt c tx c rx lna en 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 sp3t 2f0 filter n/c rf5745 2.4ghz to 2.5ghz, 802.11b/g/n single-band front end module the rf5745 is a single-chip integrat ed front-end module (fem) for high- performance zigbee? and other wifi applications in the 2.4ghz to 2.5ghz ism band. the fem addresses th e need for aggressive size reduc- tion for a typical ieee802.15.4 and ieee802.11b/g systems. the rf5745 greatly reduces the number of external components by inte- grating all matching networks. the fem has an integrated power amplifier, lna, power detector, and some tx filtering. it is also capable of switching between wifi rx, wifi tx and bluetooth tm rx/tx operations. the device is provided in a 3mmx3mmx0.45mm, 16-pin qfn package. this module meets or exceeds the front-end system requirements for and wifi applica- tions. features ? single module radio front- end ? single supply voltage 3.0v to 4.5v ? integrated 2.4ghz to 2.5ghz pa, lna, tx/rx switch, p detect ? 24dbm output power for zigbee? applications ? 20dbm output power for 11b meeting spectral mask ? 17dbm output power for 11g, 54mbps ofdm at <3% evm applications ? zigbee? based systems for remote monitoring and control ? smart meters for energy management ? 802.11b/g wifi applications ? 2.5ghz ism band applications ? portable battery-powered equipment ? opt. bluetooth tm sharing of single antenna port rf5745 standard 25 piece bag rf5745sr standard 100 piece reel rf5745tr7 standard 2500 piece reel RF5745PCK-410 fully assembled evalua tion board tuned for 2.4ghz to 2.5ghz and 5 piece loose samples ds120214 ? ? package style: qfn, 16-pin, 3.0 x 3.0 x 0.5 mm
2 of 11 rf5745 ds120214 7628 thorndike road, greensboro, nc 27409-9421 for sales or technical support, contact rfmd at (+1) 336-678-5570 or sales-support@rfmd.com. absolute maximum ratings parameter rating unit dc supply voltage 5.0 v dc supply current 240 ma full specification temp range (full spec. compliant) -15 to +65 c extreme operating (reduced performance) +65 to +85 -40 to -15 c storage temperature -40 to +150 c antenna port nominal impedance 50 ? maximum tx input power for 11b/g/ieee802.15.4 (no damage) +5 dbm moisture sensitivity msl2 parameter specification unit condition min. typ. max. 2.4ghz transmit parameters compliance ieee802.11b, ieee802.11g, ieee802.15.4, fcc cfg 15.247, .205, .209 nominal conditions v cc =4.0v, v reg =2.85v pulsed at 1% to 100% duty cycle, temp=+25c, freq=2.4ghz to 2.5ghz, unless otherwise noted frequency 2.4 2.5 ghz output power zigbee? (ieee802.15.4) 24 dbm measured with zigbee? waveform 11g 15 17 dbm at rated 11g power, over temp range, v cc =4.0v, v reg =2.85, over frequency, and over process. 54mbps, ofdm, 64qam ieee802.11b 19 20 dbm measured at 1mbps meeting acp1/acp2 requirements evm* 3.0 4.0 % rms, mean, p out(g) =17dbm adjacent channel power acp1 -34 -30 dbc at rated 11b power, over temperature range, over v cc , over frequency, and over process acp2 -53 -50 dbc at rated 11b power, over temperature range, over v cc , over frequency, and over process gain 29 31 db gain variation frequency -1 +1 db 2.4ghz to 2.5ghz *the evm specification is obtained with a signal generator that has an evm level <0.7%. caution! esd sensitive device. exceeding any one or a combination of the absolute maximum rating conditions may cause permanent damage to the device. extended application of absolute maximum rating conditions to the device may reduce device reliability. specified typical perfor- mance or functional operation of the device under absolute maximum rating condi- tions is not implied. rohs status based on eudirective2002/95/ec (at time of this document revision). the information in this publication is believed to be accurate and reliable. however, no responsibility is assumed by rf micro device s, inc. ("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 circuitry, recommended appli- cation circuitry and specifications at any time without prior notice.
3 of 11 rf5745 ds120214 7628 thorndike road, greensboro, nc 27409-9421 for sales or technical support, contact rfmd at (+1) 336-678-5570 or sales-support@rfmd.com. parameter specification unit condition min. typ. max. 2.4ghz transmit parameters, cont?d power detect voltage detect 0.1 2.0 v p out 0dbm to 23dbm over all conditions input resistance 10 k ? input capacitance 5 pf bandwidth 800 1000 khz current consumption i cc 150 ma rfp out =16dbm, 54mbps ieee802.11g 190 at rated 11b power 250 ma rfpout=24dbm, 11b and zigbee? waveform idle 110 ma v cc =4v, v reg =2.85v, and rf=off i reg 35ma leakage 2 10 ? a power supply 3.0 4 4.5 v v reg 2.75 2.85 2.95 v input/output impedance 50 ? ruggedness output vswr 10:1 no damage stability output vswr 5:1 no spurs above -45dbm/mhz thermal resistance 79.25 c/w v cc = 3.3, v reg = 2.9v, c_tx = 3.3, c_rx = c_bt = gnd, p out = 17dbm, modulation = on, freq = 2.45ghz, dc = 100%, t = 85c harmonics rbw=1mhz. measured at 1mbps. second -27 tbd dbm p out at cf=20dbm, h2 frequency is between 4.8ghz to 5.0ghz third -48 tbd dbm p out at cf=20dbm, h3 frequency is between 7. 2 g h z to 7. 5 g h z turn-on/off time 0.5 1.0 ? s output stable to within 90% of final gain antenna port impedance antenna port is a dc short to ground input 50 ? receive output 50 ? transmit switch control voltage low 0 0.2 v high 2.30 2.85 v cc v switch control current 10 ? a per control line switch control speed 100 nsec
4 of 11 rf5745 ds120214 7628 thorndike road, greensboro, nc 27409-9421 for sales or technical support, contact rfmd at (+1) 336-678-5570 or sales-support@rfmd.com. isolation table switch control logic *the fem can simultaneously receive wifi and bluetooth tm in the wifi rx and bt rx mode. parameter specification unit condition min. typ. max. 2.4ghz receive parameters frequency 2.4 2.5 ghz receive gain 12 db wifi rx mode only 8 db wifi rx and bt rx mode noise figure 2.5 db wifi rx mode only 8 db wifi rx and bt rx mode passband ripple -1 +1 db output return loss 9.6 db output impedance 50 ? no external matching lna current 10 13 ma input ip3 +9 dbm bluetooth tm parameters frequency 2.4 2.5 ghz insertion loss 1.2 db sp3t switch, a ll unused ports terminated into their nominal impedance. bluetooth tm mode only 5 db wifi rx and bt rx mode passband ripple -0.2 +0.2 db input/output power 8 dbm output return loss 9.6 db output impedance 50 ? no external matching current consumption 30 ? a switch leakage current *the evm specification is obtained with a signal generator that has an evm level <0.7%. parameter min. typ. max. unit wifi rx to bt rx/tx 20 db wifi tx to bt rx/tx 20 db wifi rx to wifi tx 20 db wifi rx and bt rx mode 9 db mode c_rx c_tx c_bt bluetooth tm llh wifi tx l h l wifi rx h l l wifi rx/bt h l h
5 of 11 rf5745 ds120214 7628 thorndike road, greensboro, nc 27409-9421 for sales or technical support, contact rfmd at (+1) 336-678-5570 or sales-support@rfmd.com. package drawing pin function description 1lna vcc voltage supply for the lna. 2rx out receive port for 802.11b/g band. internally matched to 50 ? . dc block provided. 3tx rf input for the 802.11b/g pa. input is matched to 50 ? and dc block is provided. 4vreg regulated voltage for the pa bias control circuit. an external bypass capacitor may be needed on the v reg line for decoupling purposes. 5pdetect power detector voltage for tx section. pdet voltage varies with output power. may need external decoupling capacitor for module stability. may need external circuitry to bring output voltage to desired level. 6vcc supply voltage for the bias circuit of the pa. add an external 56pf bypass capacitor for low frequency decou- pling. 7vcc supply voltage for the first stage of the pa. add an external 1nf capacitor for low frequency decoupling. 8n/c no connect. 9vcc supply voltage for the second stage of the pa. add an external 10nf capacitor for low frequency decoupling. 10 gnd ground. 11 ant port matched to 50 ? and is a dc short to ground. 12 c_bt switch control port. see truth table for proper level. 13 bt rf bidirectional port for bluetooth tm . input is matched to 50 ? and dc block is provided. 14 c_tx switch control port. see switch truth table for proper level. 15 c_rx switch control port. see switch truth table for proper level. 16 lna_en lna enable pin. this is an active high control. an external bypass capacitor may be needed on the lna_en line.
6 of 11 rf5745 ds120214 7628 thorndike road, greensboro, nc 27409-9421 for sales or technical support, contact rfmd at (+1) 336-678-5570 or sales-support@rfmd.com. pin out lna vcc rx out tx in vreg bt n/c pdetect vcc vcc vcc gnd ant c_bt c_tx c_rx lna_en 5 6 7 8 9 10 11 12 2 3 4 1 16 15 14 13
7 of 11 rf5745 ds120214 7628 thorndike road, greensboro, nc 27409-9421 for sales or technical support, contact rfmd at (+1) 336-678-5570 or sales-support@rfmd.com. evaluation board schematic 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 vreg 50 ?? strip j2 rx in lna_en 50 ?? strip j4 ant 50 ?? strip j1 tx in r1 0 ? c4 330 pf pdetect vcc l2 3.0 nh c7 0.1 ? f l3 1.8 nh c8 0.1 ? f j3 bt c_tx c_rx p2-1 vcc3 p2 hdr_1x6 6 5 4 3 2 1 p2-3 lna_en vrx p2-4 gnd p1-4 vcc p1 hdr_1x4 1 2 3 4 p1-1 vreg gnd p1-3 pdetect p2-5 vtx c1 0.1 ? f vcc3 l1 2.2 nh vcc1 n/c vcc2 17 gnd p2-6 vbt vbt u1 rf5725 vccb
8 of 11 rf5745 ds120214 7628 thorndike road, greensboro, nc 27409-9421 for sales or technical support, contact rfmd at (+1) 336-678-5570 or sales-support@rfmd.com. theory of operation the rf5745 is an integrated front-end module (fem) for high performance zigbee? (802.15.4) and wifi (802.11b/g) applica- tions in the 2.4ghz to 2.5ghz ism band . the fem addresses the need for aggre ssive size reduction by integrating 50 ? match- ing networks to all rf ports and minimizing the number of external components. the fem has integrated zigbee? power amplifier, lna, power detector, and some tx filtering. also it is capable of switching between wifi rx, wifi tx, and simultane- ous wifi/bt receive modes. the device is manufactured on gaas hbt/phemt processes and is provided in a 3.00mmx3.00mmx0.45mm 16-pin qfn package. this module meets or exceeds the front-end system requirements for 802.15.4 and 802.11b/g applications. for best performance, the evaluation board layout should be copied as close as possible in particular the ground vias and bypassing components. other configurations may work, but the de sign process is much easier and quicker if this recommen- dation is followed. gerber files of the evaluation board can be provided upon request. the supply voltage lines should present an rf short to the fem by using bypass capacitors on the v cc traces. the rf5745 is a very easy part to implement, but care on circuit layout and component selection is always advisable when designing circuits that operate at 2.5ghz. please contact rfmd sales or application engineering for additional data and guid- ance. the rf5745 requires a single supply voltage (v cc ), a regulated current control voltage (v reg ) supply, and a switch control supply to simplify bias requirements. 802.11b/g and zigbee? transmit path the rf5745 has a typical gain of 31d b from 2.4ghz to 2.5ghz. this fem is capable of delivering a typical output power of 24dbm to 25dbm when operating under the ieee802.15.4 conditio ns. it is also capable of delivering 17dbm typical output power with a standard ieee802.11g waveform and 20dbm with a standard ieee802.11b waveform. current control optimiza- tion is provided through the v reg pin which requires a regulated su pply to maintain nominal current. out of band rejection the rf5745 contains basic filtering components for the transmit path. due to space constraints inside the module, filtering is limited to a few resonant poles. additional filters may be ne eded outside the module depending upon the end-user's applica- tion. receive path while on receive mode, the rf5745 has a typical gain of 10db and minimum insertion loss for the bt path. the rx port return loss is typically around 10db. depending on the application, if higher out of band rejection is needed beyond what the rf5745 can achieve, then additional external filters may be added. the rf5745 is designed so that the sp3t may act as a 3db splitter when placed in wifi rx and bt rx mode simultaneously. see logic control table for proper settings.
9 of 11 rf5745 ds120214 7628 thorndike road, greensboro, nc 27409-9421 for sales or technical support, contact rfmd at (+1) 336-678-5570 or sales-support@rfmd.com. rf5745 biasing instructions: ? 802.11b/g and zigbee? transmit ? connect the fem to a signal generator at the input and a spectrum analyzer at the output. ?bias v cc to 4.0v first with v reg =0.0v ? refer to switch operational truth table to set the control lines at the proper levels for wifi tx. ? turn on v reg to 2.85v (typ.). v reg controls the current drawn by the 802.11b/ g and zigbee? power amplifier and the current should quickly rise to ~100ma20ma for a ty pical part but it varies based on the out put power desired. be extremely careful not to exceed 3.4v on the v reg pin or the part may exc eed device current limits. ? 802.11 b/g and zigbee? receive ? to receive wifi set the switch contro l lines per the truth table below. ? bluetooth tm receive ? to receive bluetooth tm set the switch control lines per the truth table below. switch control logic *the fem can simultaneously receive wifi and bluetooth tm in the wifi rx and bt rx mode. mode c_rx c_tx c_bt bluetooth tm llh wifi tx l h l wifi rx h l l wifi rx/bt h l h
10 of 11 rf5745 ds120214 7628 thorndike road, greensboro, nc 27409-9421 for sales or technical support, contact rfmd at (+1) 336-678-5570 or sales-support@rfmd.com. evaluation board layout board size 1.5? x 1.5? board thickness 0.032?, board material fr-4, multi-layer
11 of 11 rf5745 ds120214 7628 thorndike road, greensboro, nc 27409-9421 for sales or technical support, contact rfmd at (+1) 336-678-5570 or sales-support@rfmd.com. rf5745 plots for ieee802.11b gain versus p out v cc =4.0v, v reg =2.85v, 11b 1mbps 20 25 30 35 40 0 5 10 15 20 25 output power (dbm) gain (db) gain 2400mhz gain 2450mhz gain 2500mhz operating current versus p out v cc =4.0v, v reg =2.85v, 11b 1mbps 100 120 140 160 180 200 220 240 260 280 300 0 5 10 15 20 25 output power (dbm) i cc (ma) icc 2400mhz icc 2450mhz icc 2500mhz acp versus p out v cc =4.0v, v reg =2.85v, 11b 1mbps -70 -60 -50 -40 -30 -20 0 5 10 15 20 25 output power (dbm) acp (dbm) acp1 2400mhz acp1 2450mhz acp1 2500mhz 2400mhz acp2 2450mhz acp2 2500mhz acp2 i reg versus p out v cc =4.0v, v reg =2.85v, 11b 1mbps 0 1 2 3 4 5 0 5 10 15 20 25 output power (dbm) i reg (ma) ireg 2400mhz ireg 2450mhz ireg 2500mhz

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