rf micro devices inc . 7628 thorndike road, greensboro, nc 27409 - 9421 ds131 106 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 property of their respective owners. ?20 13, rf micro devices, inc. 1 of 9 RFFM8505 4.9ghz to 5.85ghz 802.11a/n/ac wifi front end module the RFFM8505 provides a complete integrated solution in a single front end module (fem) for wifi 802.11a/n/ac systems. the ultra - small factor and integrated matching minimizes layout area in the customer?s application and greatly reduces the number of external components. this simplifies the total front end solution by reducing the bill of material s, system footprint, and manufacturing cost. the RFFM8505 integrates a 5 ghz power amplifier (pa), single pole double throw switch (sp2t), lna with bypass, and a power detector coupler for improved accuracy. the device is provided in a 2.5mm x 2.5mm x 0. 40mm, 16 - pin qfn package. this module meets or exceeds the rf front end needs of ieee 802.11a/n/ac wifi rf systems . tx pa _ en gnd vcc c _ rx ant pdet gnd gnd rx 3 1 lna _ en vcc vmode 12 2 13 11 10 9 8 7 6 5 4 14 15 16 vcc gnd gnd functional block diagram ordering information RFFM8505sb standard 5 - piece sample bag rf fm8505 sq standard 25- piece sample bag rf fm8505 sr standard 100 - piece reel rf fm8505tr7 standard 2500 - piece reel rf fm8505 pck - 410 fully assembled evaluation board w/ 5 - piece bag package: q fn, 16 - pin, 2.5mm x 2.5 mm x 0.40mm features p out =17.5dbm, 11ac, 80mhz 1.5% ( - 36.5db) evm p out =19.5dbm, 11n 20mhz 2.5% ( - 32db) evm input and output matched to 50? integrated 5ghz pa, sp2t switch, lna, and pdet low height package, suited for sip and cob designs supports low power mode for improved efficiency applications cellular handsets mobile devices tablets consumer electronics gaming n etbooks/notebooks tv/monitors/video RFFM8505 free datasheet http://
rf micro devices inc . 7628 thorndike road, greensboro, nc 27409 - 9421 ds131 106 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. 2 of 9 rf fm8505 absolute maximum rat ings parameter rating unit dc supply voltage (no rf applied) 6 v pa enable voltage - 0.5 to 5 v dc dc supply current 500 ma operating temperature range - 40 to +85 oc storage temperature - 40 to +150 oc maximum tx input power into 50? load for 11a/n /ac (no damage) +12 dbm lna on maximum rx input power (no damage) +12 dbm bypass mode maximum rx input power (no damage) +25 dbm moisture sensitivity msl2 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 rating 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. nominal operating parame ters parameter specification unit condition min typ max compliance 802.11a, 802.11n, 802.11ac operating frequency 5.15 5.825 ghz extended frequency 4.9 5.85 ghz functional with reduced performance - 3db lower tx power operating temperature - 10 70 oc extended operating temperature - 40 85 oc functional with reduced performance power supply v cc 3.2 3.6 4.6 v extended v cc 3 5.0 v please see 5 volts apps schematic control voltage - high 2.8 3.1 v cc v pa_en, c _ rx, lna_en , v mode . should not exceed v cc voltage control voltage - low 0 0.4 v transmit (tx - ant) high power mode t= -10c to +70 c, v cc =3.2v to 4.6v, 50% duty cycle unless otherwise noted ht80 output power 17.0 17.5 dbm t= 25c, v cc = 3.6v 80mhz 802.11ac - dynamic evm 1.5 1.8 % - 36.5 - 35 .0 db ht 80 output power 16 .0 dbm t= - 10 c to +70 c , v cc =3.2v to 4.6v 80mhz 802.11ac - dynamic evm 1.5 1.8 % - 36.5 - 35 .0 db ht20 output power 19.0 19.5 dbm t= 25c, v cc = 3.6v 20mhz 802.11n - dynamic evm 2.5 3 % - 32 - 30.5 db ht20 output power 18 .0 dbm t= - 10 c to +70 c , v cc =3.2v to 4.6v 20mhz 802.11n - dynamic evm 2.5 3 % - 32 - 30.5 db 20/ 80mhz 802.11ac - spectral mask 22 dbm t= 25c, v cc = 3.6v 40 mhz 802.11n - spectral mask 21 dbm tx port return loss 10 18 db ant port return loss 10 18 db large signal gain 24 28 31 db t= 25c, v cc = 3.6v 2 3 28 31 db t= - 10c to +70c, v cc =3.2v to 4.6v gain flatness over any 80mhz bw - 0.5 0.5 db free datasheet http://
rf micro devices inc . 7628 thorndike road, greensboro, nc 27409 - 9421 ds131 106 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 9 rf fm8505 parameter specification unit condition min typ max transmit (tx - ant) high power mode (continued) t= -10c to +70 c , vcc=3.2v to 4.6v, 50% duty cycle unless otherwise noted gain flatness across band - 1 1 db operating current 230 ma p out = 17.5dbm, t= 25c, v cc = 3.6v 215 270 ma p out = 16dbm, t= - 10 to +70c, v cc =3.2v to 4.6v 260 ma p out = 19.5dbm, t= 25c, v cc = 3.6v 235 300 ma p out = 18dbm, t= - 10 to +70c, v cc =3.2v to 4.6v quiescent current 165 ma rf= off, t= 25c, v cc = 3.6v pa_en current 70 150 ua second harmonic - 45 - 40 dbm /mhz p out = 18dbm, t= 25c, v cc = 3.6v, 6mbps 802.11a third harmonic - 45 - 38 dbm /mhz power detector voltage 0.28 0.32 0.37 v p out = 0dbm, t= 25c power detector nominal 5210mhz 0.75 0.95 v p out = 17.5dbm, t= 25c, v cc = 3.6v power detector nominal 5775mhz 0.7 0.88 v power detector voltage 0.8 0.95 1.2 v p out = 20dbm variation from 0 - 360 load pull - 1.5 1.5 db 3:1 vswr ant - rx isolation (tx mode - tx enabled and maximum power) 28 db transmit (tx - ant) low power mode t= 25c, v cc = 3.6v,50% duty cycle unless otherwise noted ht80 output power 1 1 .0 dbm t = 25c, v cc = 3.6v 80mhz 802.11ac dynamic evm 1.5 1.8 % - 36.5 - 35 .0 db ht20 output power 1 3 .0 dbm t = 25c, v cc = 3.6v 20mhz 802.11n dynamic evm 2.5 3 % - 32 .0 - 30.5 db tx performance ? spectral mask 40mhz 802.11n output power 12 dbm t = 25c, v cc = 3.6v 20/ 80mhz 802.11ac output power 14 dbm operating current 150 180 ma p out = 11 dbm for 11ac 170 200 ma p out = 13 dbm for 11 n v mode control line current 160 500 a large signal gain 2 5 db p out = 12dbm large signal gain 23 25 db t= - 10 to +70c, v cc =3.2v to 4.6v gain flatness over any 80mhz bw - 0.5 0.5 db free datasheet http://
rf micro devices inc . 7628 thorndike road, greensboro, nc 27409 - 9421 ds131 106 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 9 rf fm8505 parameter specification unit condition min typ max receive (ant - rx) - lna on freq = 5.1 5ghz to 5.825ghz, t = - 10c to +70c, v cc =3.2v to 5.0 v, unless otherwise noted. gain 9 12 15 db t= 25c, v cc = 3.6v 8 12 16 db gain flatness over any 80mhz bw - 0.5 0.5 db t= 25c, v cc = 3.6v gain flatness across band - 1 1 db noise figure 2.5 3 db t= 25c, v cc = 3.6v 2.5 3.5 db rx port return loss 10 20 db ant port return loss 10 15 db nominal input p1db - 5 - 3 dbm t= 25c, v cc = 3.6v current consumption 10 16 ma lna_en control current 130 200 a lna turn on time 400 600 ns receive (ant - rx) - bypass mode t= - 10c to +70c, v cc = 3.2v to 5.0 v, unless otherwise noted lna bypass current 0.5 a nominal insertion loss 5 8 11 db t= 25c, v cc = 3.6v rx port return loss 8 15 db ant port return loss 10 20 db nominal input p1db 15 20 dbm t= 25c, v cc = 3.6v general specifications control line impedance - pa_en 75 k? control line impedance - lna_en 78 k? control line impedance - c_rx 27 m? switch control current ? high - each line 5 100 a switch control current ? low - each line 0.5 2 a switching speed 100 500 ns esd ? human body model 1000 v pa turn - on time 200 500 ns 10% to 90% pa stability 20 dbm no spurious above - 41.25dbm/mhz maximum input power 12 dbm into 50?, v cc = 3.3v, 25c 12 dbm 6:1 vswr, v cc = 3.3v, 25c 5 dbm 10:1 vswr, v cc = 3.3v, 25c leakage current 0 2 10 ua v cc = 4.8v, t= 25c, rf off, all control lines floating transmit (tx - ant) high power mode at 5v freq = 5.15ghz to 5.825ghz, v cc = 5.0v, t= +25c, 50% duty cycle, unless otherwise noted. output power 19. 0 dbm t= 25c, v cc = 5.0 v 80mhz 802.11ac dynamic evm 1.5 1.8 % - 36 . 5 - 35.0 db output power 20 dbm t= 25c, v cc = 5.0 v 20mhz 802.11n dynamic evm 2.5 3 % - 32 .0 - 30. 5 db large signal gain 23 28 db operation current 270 ma p out = 19 dbm 285 ma p out = 20 dbm quiescent current 200 ma rf = off free datasheet http://
rf micro devices inc . 7628 thorndike road, greensboro, nc 27409 - 9421 ds131 106 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 9 rf fm8505 switch control logic truth table operating mode pa_en lna_en c_rx v mode standby low low low low 802.11a/n/ac tx high power high low low low 802.11a/n/ac tx low power high low low high 802.11a/n/ac rx gain low high high low 802.11a/n/ac rx bypass low low high low notes: ? pa_en and tx switch control are tied together internally. ? high = 2.8 to v cc . low = 0v to 0.2v evaluation board schematic free datasheet http://
rf micro devices inc . 7628 thorndike road, greensboro, nc 27409 - 9421 ds131 106 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 9 rf fm8505 5v evaluation board schematic free datasheet http://
rf micro devices inc . 7628 thorndike road, greensboro, nc 27409 - 9421 ds131 106 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 9 rf fm8505 pin out tx pa_en gnd vcc c_rx ant pdet gnd gnd rx 3 1 lna_en vcc vmode 12 2 13 11 10 9 8 7 6 5 4 14 15 16 vcc gnd gnd package outline and branding drawing (dimensions in millimeters) free datasheet http://
rf micro devices inc . 7628 thorndike road, greensboro, nc 27409 - 9421 ds131 106 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 9 rf fm8505 pcb patterns notes: 1. thermal vias for center slug ?c? should be incorporated into the pcb design. the number and size of thermal vias will depend on the application, power, dissipation and electrical requirements. example of the number and size of vias can be found on the rfmd evaluation board la yout (gerber files are available upon request) free datasheet http://
rf micro devices inc . 7628 thorndike road, greensboro, nc 27409 - 9421 ds131 106 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 9 rf fm8505 pin names and descriptions pin name descri ption 1 gnd ground connection. this pin is not connected internally and can be left floating or connected to ground. 2 rx rf output port for the 802.11a/n/ac lna. this port is matched to 50? and dc blocked internally. 3 gnd this pin is not connected internally and can be left floating or connected to ground. 4 vcc supply voltage for the lna and pa regulator. see applications schematic for biasing and bypassing components. 5 pdet power detector voltage for the tx path. may need external series r/shunt c to adjust voltage level and to filter rf noise. 6 pa_en control voltage for the pa and tx switch. see truth table for proper settings. 7 gnd this pin is not connected internally and can be left floating or connected to ground. 8 tx rf input port for the 802.11a/n/ac pa. input is matched to 50? and dc blocked internally 9 v mode high/low power mode control signal. v mode can be low or floating for nominal conditions (high power mode). applying 2.8v or greater to this pin enables low power mo de. 10 vcc supply voltage for the first and second stage of the pa. see applications schematic for biasing and bypassing components. 11 vcc supply voltage for the final stage of the pa. see applications schematic for biasing and bypassing components. 12 gnd this pin is not connected internally and can be left floating or connected to ground. 13 ant rf bidirectional antenna port matched to 50?. an external dc block is required 14 gnd this pin is not connected internally and can be left floating or connected to ground. 15 c_rx receive switch control pin. see switch truth table for proper level. 16 lna_en control voltage for the lna. when this pin is set to a low logic state, the bypass mode is enabled. pkg base gnd ground connection. the backside of the package should be connected to the ground plane through a short path, i.e., pcb vias under the device are recommended. free datasheet http://
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