1 of 8 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. ?2012, 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 customerservice@rfmd.com . ordering information tx rx ant pa_en gnd lna_en c_rx n/c pdet vcc vdd 3 1 12 2 13 11 10 9 8 7 6 5 4 14 15 16 gnd gnd gnd n/c vcc 2fo rffm4591 3.0v to to 3.6v, 4.9ghz to 5.85ghz 802.11a/n/ac front end module the rffm4591 provides a complete integrated solution in a single front end module (fem) for wifi 802.11a/n/ac systems. the ultra-small form factor and integrated matching mini mizes the layout area in the cus- tomer's application and greatly redu ces the number of external compo- nents. this simplifies the total front end solution by reducing the bill of materials, system footprint, and manufacturability cost. the rffm4591 integrates a power amplifier (pa), single pole double throw switch (spdt), lna with bypass, and a power detector coupler for improved accuracy. the device is provided in a 3mm x 3mm x 1.05mm, 16-pin laminate package. this module meets or exceeds the rf front end needs of ieee 802.11a/n/ac wifi rf systems. features ? integrated 4.9ghz to 5.85ghz amplifier, spdt tx/rx switch, lna with bypass, and power detector coupler ? p out = 17dbm, 11a/n, 3.3v 2.5% dynamic evm ? p out = 16dbm, 11ac ht80 mcs9, 1.8% dynamic evm applications ? ieee802.11a/n/ac wifi applications ? 4.9ghz to 5.85ghz ism band applications ? portable battery-powered equipment ? wifi access points, gateways and set top boxes rffm4591pck-410 rffm4591 eval board with 5-piece bag RFFM4591SB 5-piece bag rffm4591sr 100-piece reel rffm4591tr7 2500-piece reel rffm4591sq 25-piece bag ds130510 package: laminate, 16-pin, 3.0mm x 3.0mm x 1.05mm
2 of 8 rffm4591 ds130510 7628 thorndike road, greensboro, nc 27409-9421 for sales or technical support, contact rfmd at (+1) 336-678-5570 or customerservice@rfmd.com . absolute maximum ratings parameter rating unit dc supply voltage (no rf) 5.5 v dc dc supply voltage (with rf on) 5 v dc maximum tx and rx input power (no damage) 12 dbm operating ambient temperature -20 to +85 c extended temperature range (with reduced performance) -40 to -20 c storage temperature -40 to +150 c moisture sensitivity msl3 parameter specification unit condition min. typ. max. typical conditions 3.3v temperature = -10c to +70c, v cc = 3.3v, pa_en = high, p out = 17dbm using a ieee802.11n mcs7 waveform unless otherwise noted. tx performance - 11a/n/ac compliance with standard 802.11a/n/ac frequency 5150 5850 mhz 802.11n output power 16.5 17 dbm 802.11n ht20 and ht40 mcs7 11n dynamic evm 2.5 3 % -32 -30.5 db 802.11ac output power 15 16 dbm 802.11ac ht40 and ht80 mcs9 11ac dynamic evm 1.8 % -35 db tx performance - spectral mask 802.11n output power 19 dbm meet ieee ht40 mcs7 spectral mask frequency 4900 5150 mhz 802.11n output power 16.5 17 dbm 802.11n ht20 and ht40 mcs7 11n evm 2.5 3 % -32 -30.5 db second harmonic -45 -41 dbm/mhz 4.9ghz to 5.825ghz, p out = 18dbm, 6mbps 802.11a third harmonic -50 -43 dbm/mhz general tx performance gain 24 26 30 db 5.15ghz to 5.35ghz 26 28 31 db 5.35ghz to 5.825ghz gain variation over temp -2 2 db power detect voltage 0.35 0.375 0.4 v rf = off 0.706 0.786 v frequency = 5825mhz, p out = 16.5dbm, t = 25c power detect accuracy -1.5 1.5 db into 3:1 vswr load, t = 25c input return loss - tx_in pin -15 -7 db in specified frequency band output return loss at ant pin -15 -10 db caution! esd sensitive device. exceeding any one or a combination of the absolute maximum rating conditions may cause permanent damage to the device. ex tended 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. 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. rfmd green: rohs compliant per eu directive 2011/65/eu, 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.
3 of 8 rffm4591 ds130510 7628 thorndike road, greensboro, nc 27409-9421 for sales or technical support, contact rfmd at (+1) 336-678-5570 or customerservice@rfmd.com . parameter specification unit condition min. typ. max. typical conditions 3.3v (continued) temperature = -10c to +70c, v cc = 3.3v, pa_en = high, p out = 17dbm using a ieee802.11n mcs7 waveform unless otherwise noted. general tx performance operating current 225 250 ma p out = 17dbm 220 ma p out = 16dbm quiescent current 175 190 ma nominal conditions. no rf applied leakage current 10 av cc = 3.3v, lna_en = low, c_rx = low, pa_en = low, temperature = 25c v control high (pa_en, c_rx, and lna_en) for both tx and rx modes 2.8 2.9 v cc v v control low (pa_en, c_rx, and lna_en) for both tx and rx modes 0 0.2 v turn-on time from pa_en edge 500 ns output stable to within 90% of final gain turn-off time from pa_en edge 500 ns stability -25 24 dbm no spurs above -47dbm into 4:1 vswr cw p1db 24 25 dbm tx mode in 50% duty cycle rx performance temperature = -10c to +70c, v dd = 3.3v, c_rx = high, lna_en = high gain 11 12.5 13 db temperature = 25c gain over operating temperature range 9 12.5 14 dbm temperature = -10c to +70c gain - extended 8 12.5 16 db temperature = -40c to +85c nf 2.5 3.5 db in specified frequency band rx port return loss -7 db ant port return loss -10 -5 db input ip3 -3 0 dbm input p1db -13 -10 dbm i dd 13 17 ma lna_en control current 30 50 a rx bypass mode temperature = -10c to +70c, v dd = 3.3v, c_rx = high, lna_en = low insertion loss -10 -8 -6 db rx port return loss -7 db ant port return loss -6 db input ip3 15 20 dbm input p1db 5 10 dbm isolation ant-tx; rx mode 20 db c_rx = high, pa_en = low ant-rx; tx mode 25 db pa_en = high, c_rx = low, lna_en = low
4 of 8 rffm4591 ds130510 7628 thorndike road, greensboro, nc 27409-9421 for sales or technical support, contact rfmd at (+1) 336-678-5570 or customerservice@rfmd.com . parameter specification unit condition min. typ. max. typical conditions 3.3v (continued) temperature = -10c to +70c, v cc = 3.3v, pa_en = high, p out = 17dbm using a ieee802.11n mcs7 waveform unless otherwise noted. general performance control current c_rx current 0.5 1 a pa_en current 30 50 a switch control speed 100 ns pa_en control impedance 4.9 m lna_en control impedance 6.5 m c_rx control impedance 27 m esd human body model 500 v eia/jesd22-114a rf pins 1000 v eia/jesd22-114a dc pins charge device model 1000 v jesd22-c101c all pins thermal resistance r th_i 46 ? c/w maximum input power 12 dbm into 50 , v cc = 3.3v, 25c maximum input power 12 dbm 6:1 vswr, v cc = 3.3v, 25c maximum input power 5 dbm 10:1 vswr, v cc = 3.3v, 25c
5 of 8 rffm4591 ds130510 7628 thorndike road, greensboro, nc 27409-9421 for sales or technical support, contact rfmd at (+1) 336-678-5570 or customerservice@rfmd.com . logic control table mode pa_en lna_en c_rx standby low low low 802.11a/n/ac tx high low low 802.11a/n/ac rx gain low high high 802.11a/n/ac rx bypass low low high note: high = 2.8v to v cc , low = 0v to 0.2v pin names and descriptions pin name description 1gnd ground connection. 2rx rf output port for the 802.11a/n/ac lna. input is matched to 50 and dc block is provided internally. 3gnd ground connection. 4vdd supply voltage for the lna. see applications schematic for biasing and bypassing components. 5pdet power detector voltage for tx section. pdet voltage varies with output power. may need external capacitor for noise decoupling. 6pa_en control voltage for the pa and tx switch. see truth table for proper settings. 7nc not connected. this pin is not internally connected so customer has the choice to leave it nc or ground it. 8tx rf input port for the 802.11a/n/ac pa. input is matched to 50 and dc block is provided internally. 9nc not connected. this pin is not internally connected so customer has the choice to leave it nc or ground it. 10 vcc supply voltage for the pa. see applications sc hematic for biasing and bypassing components. 11 vcc supply voltage for the pa. see applications sc hematic for biasing and bypassing components. 12 gnd ground connection. 13 ant rf bidirectional antenna port matched to 50 and dc block is provided internally. 14 gnd ground connection. 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.
6 of 8 rffm4591 ds130510 7628 thorndike road, greensboro, nc 27409-9421 for sales or technical support, contact rfmd at (+1) 336-678-5570 or customerservice@rfmd.com . package drawing rffm4591 pcb footprint and stencil recommendations notes: 1. shaded area represents pin 1 location. 2. example of the number and size of vias can be found on the rfmd evaluation board layout.
7 of 8 rffm4591 ds130510 7628 thorndike road, greensboro, nc 27409-9421 for sales or technical support, contact rfmd at (+1) 336-678-5570 or customerservice@rfmd.com . pin out tx rx ant pa_en gnd lna_en c_rx n/c pdet vcc vdd 3 1 12 2 13 11 10 9 8 7 6 5 4 14 15 16 gnd gnd gnd n/c vcc
8 of 8 rffm4591 ds130510 7628 thorndike road, greensboro, nc 27409-9421 for sales or technical support, contact rfmd at (+1) 336-678-5570 or customerservice@rfmd.com . evaluation board schematic pdet c_rx 1uf lna_en nc ant tx rx pa_en vdd 0.1uf vcc n/c 3 1 12 2 13 11 10 9 8 7 6 5 4 14 15 16 fm4591
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