rf micro devices inc . 7628 thorndike road, greensboro, nc 27409 - 9421 ds130923 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. ?2013, rf micro devices, inc. 1 of 9 r ffm8506 4.9ghz to 5.85ghz 802.11a/n/ac wifi front end module the rffm8506 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 rffm8506 integrates a 5 ghz power amplifier (pa), single pole double throw switch (sp2t) and an lna with bypass. the device is provided in a 2.5mm x 2.5mm x 0.45mm, 16 - pin qfn package. this module meets o r exceeds the rf front end needs of ieee 802.11a/n/ac wifi rf systems . 1 vcc2 nc vcc1 gnd 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 rx gnd ant gnd sw_ctl lna_en gnd vbat gnd pa_en gnd tx functional block diagram ordering information rffm8506sb standard 5 - piece sample bag rffm8506 sq standard 25 - piece sample bag rf fm8506 sr standard 100- pieces reel rf fm8506tr7 standard 2500 - piece reel rffm8506pck - 410 fully assembled eval board w/ 5 - piece sample bag package: q fn, 16 - pin, 2.5mm x 2.5 mm x 0.45mm features p out =17.5dbm, 11ac, 80mhz mcs9 at - 36db (1.5%) evm small size high performance fem input and output matched to 50? integrated 5ghz pa, sp2t, switch, and lna (with bypass if required) low height package, suited for sip and cob designs applications cellular handsets mobile devices tablets consumer electronics gaming n etbooks/notebooks tv/monitors/video rffm8506
rf micro devices inc . 7628 thorndike road, greensboro, nc 27409 - 9421 ds130923 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 circuitry, recommended applic ation circuitry and specifications at any time without prior notice. 2 of 9 r ffm8506 absolute maximum rat ings parameter rating unit dc supply voltage - 0.5 to +5.4 v dc pa enable voltage - 0.5 to 5 v dc dc supply current 500 ma operating case temperature - 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 moisture sensitivity msl1 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 conditi ons 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 conditi ons is not implied. nominal operating parameters parameter specification unit condition min typ max compliance 802.11a, 802.11n, 802.11ac operating frequency 5.15 5.85 ghz extended frequency 4.9 5.15 ghz functional with reduced performance operating temperature - 30 +85 oc power supply v cc 3 3.6 4. 2 v switch control voltage - sw_ctl high 2.75 2.9 4. 2 v tx switch on at high control voltage switch control voltage - sw_ctl low 0.1 0.4 v rx switch on with low control voltage pa enable ? high 2.75 2.9 4. 2 v pa in ?on? state pa enable - low 0.1 0.4 v pa in ?off? state, do not leave floating transmit (tx - ant) mode t= +25c ; v cc =3.6v; sw_ctl = high; pa_en = high; lna_en = low; unless otherwise noted gain (5.15 to 5.85ghz) 25.5 29 db 20mhz output power* 18.5 19 dbm 802.11ac ht20 mcs7 11ac 20mhz dynamic evm - 33 - 30 db 2.2 3.2 % 40mhz output power* 17.5 18 dbm 802.11ac vht40 mcs9 11ac 40mhz dynamic evm - 36 - 35 db 1.5 1.8 % 80mhz output power* 16.5 17 dbm 802.11ac vht80 mcs9 11ac 80mhz dynamic evm - 36 - 35 db 1.5 1.8 % 80mhz output power* 13.5 dbm 802.11ac vht80 mcs9 11ac 80mhz dynamic evm - 40 db 1.0 % spectral mask 20mhz output power* 22 dbm 802.11ac ht20 with 3db margin spectral mask 40mhz output power* 21 dbm 802.11ac vht40 with 3db margin spectral mask 80mhz output power* 20 dbm 802.11ac vht80 with 3db margin operating current - nominal 270 330 ma p out = 19dbm second harmonic - 40 dbm /mhz fundamental frequency is between 4900 and 5850mhz; rf p out = 19dbm; measured in 1mhz resolution bandwidth (fcc limit max = - 30dbm) third harmonic - 38 dbm /mhz
rf micro devices inc . 7628 thorndike road, greensboro, nc 27409 - 9421 ds130923 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 circuitry, recommended applic ation circuitry and specifications at any time without prior notice. 3 of 9 r ffm8506 parameter specification unit condition min typ max transmit (tx - ant) mode (continued) t= +25c ; v cc =3.6v; sw_ctl = high; pa_en = high; lna_en = low; unless otherwise noted pa selectivity/out of band gain 30 to 2900mhz - 6 db 3600 to 4400mhz 20 db 7250 to 7750mhz 16 db tx port return loss 10 12 db ant port return loss 12 15 db noise figure 6 db receive (ant - rx) lna on t= +25c ; v cc =3.6v; sw_ctl = low; pa_en = low; lna_en = high; unless otherwise noted gain 1 0 12 db noise figure 2.5 db rx port return loss 8 10 db ant port return loss 8 10 db input ip2 50 dbm input ip3 5 6 dbm current consumption 12 ma lna_en control current 75 12 0 a lna turn on time 300 ns receive ( ant -rx ) by pass mode t= +25c ; v cc =3.6v; sw_ctl = low; pa_en = low; lna_en = low; unless otherwise noted insertion loss 3.5 db noise figure 3.5 db rx port return loss 8 10 db ant port return loss 8 10 db ant - rx isolation 2 6 db pa_en = high; maximum power input ip3 18 20 dbm lna bypass current 15 a general specifications switch control current ? high - each line 2 a switch control current ? low - each line 0.1 a do not leave floating pa_en current 30 a leakage current ? nominal 15 a rf off; pa_en = low; sw_ctl = low switching speed 200 ns pa turn - on time from pa_en edge 300 ns output stable within 90% of final gain pa turn - off time from pa_en edge 300 ns output stable within 90% of final gain esd ? human body model 1000 v eia/jesd22 - 114a all pins esd ? charge device model 1000 v eia/jesd22 - 101c all pins ruggedness 10:1 vswr with nominal input power *for 4900mhz to 5150mhz, p out is reduced by 1db
rf micro devices inc . 7628 thorndike road, greensboro, nc 27409 - 9421 ds130923 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 circuitry, recommended applic ation circuitry and specifications at any time without prior notice. 4 of 9 r ffm8506 switch control logic truth table operating mode pa_en sw_ctl lna_en 802.11a/n/ac tx high high low 802.11a/n/ac rx gain low low high 802.11a/n/ac rx bypass low low low note: all logic low pins 0.4v timing diagram
rf micro devices inc . 7628 thorndike road, greensboro, nc 27409 - 9421 ds130923 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 circuitry, recommended applic ation circuitry and specifications at any time without prior notice. 5 of 9 r ffm8506 timing sequence notes 802.11a/n/ac transmit biasing instructions 1. connect the fem to a signal generator at the input and a spectrum analyzer at the output. terminate unused ports with 50 ohms 2. set the power supply voltage to 3.0 - 4. 2 v first with pa_en < 0.4v. leakage current will be <15ua typical. 3. refer to switch operational truth table to set the control lines at the proper levels for wifi tx. all off voltages must be < 0.4v ( do not leave floating .) 4. turn on pa_en with levels indicated in the datasheet. pa_en controls the current drawn by the 802.11a/n/ac power amplifier and the current should quickly rise to ~200ma +/ - 20ma for a typical part but the actual operating current will be based on t he output power desired. be extremely careful not to exceed 5.0v on the pa_en pin or the part may exceed device current limits. 802.11a/n/ac transmit turn on sequence (see transmit timing diagram) 1. turn on power supply. 2. turn on pa_en. 3. turn on sw_ctl. 4 . apply rf. 802.11a/n/ac transmit turn off sequence 1. turn off rf. 2. turn off sw_ctl. 3 . turn off pa_en. 4 . turn off power supply. 802.11a/n/ac receive 1. to receive wifi set the switch control lines per the truth table. 2. antenna port is input and rx port is output for this test. 3. follow timing diagram for biasing instructions.
rf micro devices inc . 7628 thorndike road, greensboro, nc 27409 - 9421 ds130923 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 circuitry, recommended applic ation circuitry and specifications at any time without prior notice. 6 of 9 r ffm8506 evaluation board schematic nc vcc 2 vcc1 gnd gnd tx pa_en gnd ant gnd gnd sw_ctl lna_en rx gnd vbat fm8506 1 2 3 4 6 5 7 8 gnd gnd gnd gnd c1 1nf c3 1uf c2 4.7 uf vcc gnd gnd gnd gnd j2 tx c4 1nf pa_en 12 11 10 9 vbat gnd gnd c5 1nf c8 dni gnd lna_en r1 0 ohm 15 16 14 13 gnd gnd c7 10pf gnd j3 ant sw_ ctl gnd j2 rx
rf micro devices inc . 7628 thorndike road, greensboro, nc 27409 - 9421 ds130923 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 circuitry, recommended applic ation circuitry and specifications at any time without prior notice. 7 of 9 r ffm8506 pin out 1 vcc 2 nc vcc 1 gnd 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 rx gnd ant gnd sw _ ctl lna _ en gnd vbat gnd pa _ en gnd tx package outline and branding drawing (dimension in millimeters)
rf micro devices inc . 7628 thorndike road, greensboro, nc 27409 - 9421 ds130923 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 circuitry, recommended applic ation circuitry and specifications at any time without prior notice. 8 of 9 r ffm8506 pcb patterns note: shaded area represents pin 1 location
rf micro devices inc . 7628 thorndike road, greensboro, nc 27409 - 9421 ds130923 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 circuitry, recommended applic ation circuitry and specifications at any time without prior notice. 9 of 9 r ffm8506 pin names and descriptions pin name description 1 nc this pin is not connected internally and can be left floating but is recommended to connect to ground. 2 vcc2 supply voltage for the pa. see applications schematic for biasing and bypassing components. 3 vcc1 supply voltage for the pa. see applications schematic for biasing and bypassing components. 4 gnd ground connection. this pin is not connected internally and can be left floating or connected to ground. 5 tx rf input port for the 802.11a/n/ac pa. input is matched to 50? and dc blocked internally 6 gnd ground connection. this pin is not connected internally and can be left floating or connected to ground. 7 pa_en control voltage for the pa. see ?switch control truth table? for proper settings. 8 gnd no connect. this pin is not connected internally and can be left floating or connected to ground. 9 vbat supply voltage for the lna, switch & bias regulator. see applications schematic for biasing and bypassing components. 10 gnd ground connection. this pin is not connected internally and can be left floating or connected to ground. 11 rx rf output port for the 802.11a/n/ac lna. this port is matched to 50? and dc blocked internally. 12 lna_en control voltage for the lna. when this pin is set to a low logic state, the bypass mode is enabled. 13 sw_ctl switch control voltage. high control voltage turns on the tx path and low cont rol voltage turns on the rx path (see ?switch control truth table?) 14 gnd ground connection. this pin is not connected internally and can be left floating or connected to ground. 15 ant rf bidirectional antenna port matched to 50?. 16 gnd ground connection. this pin is not connected internally and can be left floating or connected to ground. 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 a re recommended.
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