rf micro devices inc . 7628 thorndike road, greensboro, nc 27409 - 9421 ds14 1 0 17 for sales or technical support, contact rfmd at +1.336.678.5570 or cust omerservice@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 th eir respective owners. ?2013, rf micro devices, inc. 1 of 9 r f fm4204 wifi 802.11b/g/n/ac front end module 2.4ghz to 2.5ghz the rffm4204 provides a complete solution in a single front end module (fem) by integrating the power amplifier (pa), low noise amplifier (lna) with bypass, power detector, a single pole double throw (spdt) switch, and some filtering for harmonic rejection. the integrated matching greatly reduces the number of external components and layout area in the customer application. t his simplifies the total front end solution by reducing the bill of materials, system footprint, and manufacturing cost. the rffm4204 is provided in a 6 .0 mm x 6 .0mm x 0.9 mm 24 - pin laminate package. the fem meets or exceeds the rf front end needs of ieee 80 2.11b/g/n/ac wifi rf systems . 3 4 5 6 8 9 10 11 20 19 13 12 24 23 22 21 gnd tx gnd pa_en nc pdet rx vdd gnd gnd c_tx gnd vcc1 gnd vcc2 vcc3 2 1 7 17 16 15 14 18 vbias gnd nc lna_en gnd ant gnd c_rx functional block diagram ordering information rffm4204sb standard 5 - piece sample bag rf fm4204 sq standard 25 - piece sample bag rf fm4204 sr standard 100 - piece reel rf fm4204tr13 standard 2500 - piece reel rf fm4204pc k - 410 fully assembled evaluation board w/5 pc bag package: laminate, 24 - pin, 6.0mm x 6 .0mm x 0.9mm features voltage supply: 5v p out = 24dbm, 256qam mcs 9 ht40 at 1.8% devm p out = 25dbm, 64qam mcs7 ht20 and ht40 at 3% devm input and output matched to 50 ? integrated pa, spdt, and lna with bypass high impedance enable pin applications ieee 802.11b/g/n/ac wifi systems wireless access points, gateways, router and set top box applications ism band transmitter applications rffm4204
rf micro devices inc . 7628 thorndike road, greensboro, nc 27409 - 9421 ds14 1 0 17 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 r ffm4204 absolute maximum rat ings parameter rating unit supply voltage (rf applied) - 0.5 to +5. 5 v supply voltage (no rf applied) - 0.5 to +6.0 v dc supply current 1000 ma input rf power (tx and rx) no damage + 10* dbm operating temperature - 40 to +85 c storage temperature - 40 to +150 c moisture sensitivity msl3 *maximum input power with a 50? load. 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 parameters parameter specification unit condition min typ max compliance 802.11b, 802.11g, 802.11n, 802.11ac dc operating conditions power supply 5 5.25 v operating voltage for v cc (pa) and v dd (lna) enable v oltage - high 2.8 3.0 v cc ? 0.2 v pa_en; lna_en enable voltage - low 0 0.2 v control voltage - high 2.8 3.0 v cc ? 0.2 v c_tx, c_rx control voltage - low 0 0.2 v transmit performance t= 25 c, v cc = 5.0v, control voltage= 3v, unless otherwise noted frequency 2412 2484 mhz 802.11n output power 24 25 dbm ht20 and ht40 802.11n dynamic evm 3 % - 30 .5 db 802.11ac output power 23 24 dbm ht40 802.11ac dynamic evm 1.8 % - 35 db second harmonic - 30 - 2 5 dbm/mhz p out = 2 6 dbm 11b 1 1mbps cck modulation third harmonic - 33 - 25 dbm/mhz spectral mask ht20/ht40 output power 25 db m mcs0; cck 11mbps gain 31 34 db at rated p out gain variation - 2.5 2.5 db over temperature of - 10c to +70c power detect or voltage range 0.15 1 v p out = 0dbm to 29 dbm power detect or nominal voltage 0. 6 v at rated 11ac p out input return loss 9 1 0 db in specified frequency band output return loss 7 8 db operating current 35 0 450 5 5 0 ma p out = 2 4dbm 450 60 0 ma p out = 2 4dbm, over temp quiescent current 175 ma v cc = 5.0v, pa enable = 3v, and rf = off
rf micro devices inc . 7628 thorndike road, greensboro, nc 27409 - 9421 ds14 1 0 17 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 r ffm4204 parameter specification unit condition min typ max transmit performance (continued) t= 25 c, v cc = 5.0v, control voltage= 3v, unless otherwise noted leakage current 650 ua v cc = 5v, control voltage = 0 . 2 v turn - on time 200 400 ns output stable to within 90% of final value turn - off time 250 500 ns stability - 25 34 dbm no spurs above - 47dbm into 4:1 vswr output p1db 31 dbm cw signal rx performance t= 25 c, v cc = 5.0v, control voltage= 3v, unless otherwise noted lna high gain mode 9 12 14 db bypass insertion loss 5 8 11 db lna current 12 18 ma lna leakage current 5 u a noise figure 2.2 db 2.2 3.3 db over temperature input return loss ( h igh g ain) 5 6 db output return loss ( h igh g ain) 10 16 db ant to rx isolation 25 30 db fem in tx mode input ip3 ( h igh g ain) 3 7 dbm input ip3 ( bypass mode ) 13 18 dbm general specifications t/r switching time 150 300 ns 10% to 90% of rf power control current - logic high 5 10 u a thermal resistance (th - j) 33 c/w esd human body model 1000 v eia/jesd22 - 114a, class 1c, all pins charge device model 1000 v jesd22 - c101c, all pins control logic table operating mode pa_en lna_en c_rx c_tx standby low low low low transmit mode high low low high receive high gain mode low high high low receive bypassed mode low low high low
rf micro devices inc . 7628 thorndike road, greensboro, nc 27409 - 9421 ds14 1 0 17 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 r ffm4204 applications schematic 3 4 5 6 8 9 10 11 20 19 13 12 24 23 22 21 2 1 7 17 16 15 14 18 tx ant rx vcc c 1 4 . 7 uf c 2 1 uf c _ tx c _ rx lna _ en pa _ en vdd c 7 1 uf pdet
rf micro devices inc . 7628 thorndike road, greensboro, nc 27409 - 9421 ds14 1 0 17 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 r ffm4204 evaluation board schematic 3 4 5 6 8 9 10 11 20 19 13 12 24 23 22 21 2 1 7 17 16 15 14 18 tx ant rx vcc c 1 4 . 7 uf c 2 1 uf c 3 dni c 4 dni c 5 dni c _ tx c _ rx lna _ en pa _ en vdd l 1 0 c 7 1 uf c 8 10 uf r 1 0 c 6 dni
rf micro devices inc . 7628 thorndike road, greensboro, nc 27409 - 9421 ds14 1 0 17 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 r ffm4204 evaluation board characteristics : 1) material: fr4 4 - layer board 2) surface finish: enig 3) size: 2x2 x0.032 in +/ - 10% 4) layer stack up layer description top mid1 mid2 bottom
rf micro devices inc . 7628 thorndike road, greensboro, nc 27409 - 9421 ds14 1 0 17 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 r ffm4204 pin out 3 4 5 6 8 9 10 11 20 19 13 12 24 23 22 21 gnd tx gnd pa _ en nc pdet rx vdd gnd gnd c _ tx gnd vcc 1 gnd vcc 2 vcc 3 2 1 7 17 16 15 14 18 vbias gnd nc lna _ en gnd ant gnd c _ rx package outline and branding drawing (dimensions in millimeters)
rf micro devices inc . 7628 thorndike road, greensboro, nc 27409 - 9421 ds14 1 0 17 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 r ffm4204 pcb patterns note: shaded area represents pin 1 location
rf micro devices inc . 7628 thorndike road, greensboro, nc 27409 - 9421 ds14 1 0 17 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 r ffm4204 pin description table pin name description 1 vbias bias voltage for the pa. this pin should be tied to v cc 2 gnd ground connection 3 gnd ground connection 4 tx rf input port for the pa. input is matched to 50? and dc blocked internally. 5 gnd ground connection 6 pa_en control voltage for the pa and tx switch. see truth table for proper settings. 7 nc no connect. can be connected to gnd or open. 8 nc no connect. can be connected to gnd or open. 9 pdet power detector voltage for transmit mode. p det voltage varies with output power and may need external decoupling for noise decoupling. 10 rx rf output port for the lna, input is matched to 50? and dc blocked internally. 11 vdd supply voltage for the lna. see applications schematic for biasing and bypassing components. 12 lna_en control voltage for the lna. when this pin is set ?low? lna bypass switch is closed. 13 c_rx receive switch control pin. see switch truth table for proper level. 14 gnd ground connection 15 ant rf bidirectional antenna port matched to 50? and dc blocked internally. 16 gnd ground connection 17 gnd ground connection 18 c_tx transmit switch control pin. see switch truth table for proper level. 19 gnd ground connection 20 gnd ground connection 21 vcc3 supply voltage for the pa. see applications schematic for biasing and bypassing components. 22 vcc2 supply voltage for the pa. see applications schematic for biasing and bypassing components. 23 gnd ground connection 24 vcc1 supply voltage for the pa. see applications schematic for biasing and bypassing components. pkg base gnd ground slug connection. the backside of the package should be connected directly to the reference ground plane with as many ground vias as possible to minimize ground inductance.
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