rf micro devices inc . 7628 thorndike road, greensboro, nc 27409 - 9421 ds13 1219 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 7 rffm5541 4.9ghz to 5.85ghz switch and lna front end solution the rffm5541 is designed specifically for high - performance wifi applications in the 5 ghz ism band. this module integrates the lna with bypass and a spdt switch of a front end solution. the integrated input and output match reduces the number of external components keeping cost down and utilizing minimum layout area for implementation. the rffm5541 is provided in a 2mm x 2mm x 0.5 mm, 12 - pin qfn package. this lna + switch front - end solution meets or exceeds the specification requirements of ieee 802.11a rf systems . 1 2 3 9 8 7 6 5 4 12 lna_en gnd gnd nc rx_out vdd gnd tx_in c_tx/rx ant 10 11 gnd nc functional block diagram ordering information rffm5541sb standard 5 - piece bag rf fm5541 sq standard 25 - piece bag rf fm5541 sr standard 100 - piece reel rf fm5541tr standard 2500 - piece reel rf fm5541 pck - 410 fully assembled evaluation board w/ 5 - piece bag package: qfn, 12 - pin, 2.0mm x 2 .0mm x 0.5mm features tx switch high linearity: pin>21dbm with <1% evm mcs9 single supply voltage 2.7v to 4.8v integrated 5 ghz lna with bypass and spdt applications ieee802.11a wifi applications consumer electronics mobile devices gaming general purpose switch and lna solution for 4.9ghz to 5.85 ghz frequency range rffm5541
rf micro devices inc . 7628 thorndike road, greensboro, nc 27409 - 9421 ds13 12 1 9 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 d evices, 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 c omponent circuitry, recommended application circuitry and specifications at any time without prior notice. 2 of 7 r ffm5541 proposed absolute maximum rat ings parameter rating unit dc supply voltage 5.5 v operating temperature range - 40 to +85 c storage temperature - 40 to +150 c esd - human body model (hbm) 500 v esd ? charge device model ( cdm ) 1000 v lna input power (no damage) 5 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 parameters parameter specification unit condition min typ max compliance v dd = 2.7v to 4.2 v, lna_en = 2.5 v to v dd - 0.2 v, temp = -15 c to +75 c , freq = 4.9ghz to 5.85 ghz, unless otherwise noted. receive parameters frequency 4.90 5.85 ghz vdd (lna voltage supply ) 2.7 3.6 4.2 v lna e n on state 2.5 3.3 v dd - 0.2 v off state 0 0.2 v lna_en off turns bypass switch on switch control logic low 0 0.2 v high 2.5 3.3 v dd - 0.2 v lna current lna v dd 17 2 2 ma lna in ?on? state 2 5 ma extended temp range, - 40 c to +85 c vdd leakage current 5 1 0 ua lna in ?off? state 15 ua extended temp range, - 40 c to +85 c lna_en current 5 u a 10 ua extended temp range, - 40 c to +85 c gain wifi rx 11 16 20 db includes temp range - 40 c to +85 c bypass mode - 13 - 9 - 7 db noise figure 2.4 3. 0 db v dd > 3.0 v, including switch ; temp=25 c 3. 5 db extended temp range - 40 c to +85 c; v dd > 3.0 v, including switch
rf micro devices inc . 7628 thorndike road, greensboro, nc 27409 - 9421 ds13 12 1 9 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 d evices, 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 c omponent circuitry, recommended application circuitry and specifications at any time without prior notice. 3 of 7 r ffm5541 proposed parameter specification unit condition min typ max receive parameters (continued) passband ripple wifi rx mode - 0. 9 +0. 9 db 4.9ghz to 5.1 ghz - 0. 9 +0. 9 db per u - nii band or 100mhz wifi rx bypass mode - 0. 9 +0. 9 db wifi rx port return loss 8 db ip1db - 9 dbm - 10 dbm extended temp range - 40 c to +85 c iip3 3 dbm 0 dbm extended temp range - 40 c to +85 c transmit switch parameters control voltage = 2.5v to 4.8v, temp= - 15c to +75c, unless otherwise noted frequency 4.90 5.85 ghz insertion loss 1 1.8 db includes temp range - 40 c to +85 c passband ripple - 0.2 +0.2 db over all conditions ; per u - nii band or 100mhz input p1db 2 9 3 1 dbm switch ports only, over all conditions ; cw signal 2 7 dbm extended temp range - 40 c to +85 c ; cw signal input power 21 dbm system evm=0.5% assum ed for the incoming signal; 21db m at the input with 1% composite evm at the output. input return loss 9.6 12 db over all conditions output return loss 8.5 12 db port impedance tuning 50 w all rf ports tuned for 50 ? system isolation tx to rx 20 db tx dc mode, path ant to rx, over all conditions isolation rx to tx 20 db wifi rx bypass mode, path ant - tx, over all conditions switch control current 35 50 ua per control line, over all conditions 100 ua extended temp range - 40 c to +85 c switch control speed 75 150 nsec over all conditions switch logic truth table mode c_tx/rx lna_en rx gain l h rx bypass l l tx h l
rf micro devices inc . 7628 thorndike road, greensboro, nc 27409 - 9421 ds13 12 1 9 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 d evices, 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 c omponent circuitry, recommended application circuitry and specifications at any time without prior notice. 4 of 7 r ffm5541 proposed applications schematic 1 2 3 9 8 7 6 5 4 12 10 11 ant lna _ en tx _ in rx _ out vdd 0 . 1 uf 100 pf 100 pf c _ tx / rx
rf micro devices inc . 7628 thorndike road, greensboro, nc 27409 - 9421 ds13 12 1 9 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 d evices, 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 c omponent circuitry, recommended application circuitry and specifications at any time without prior notice. 5 of 7 r ffm5541 proposed pin out 1 2 3 9 8 7 6 5 4 12 lna_en gnd gnd nc rx_out vdd gnd tx_in c_tx/rx ant 10 11 gnd nc package outline and branding drawing (dimensions in millimeters)
rf micro devices inc . 7628 thorndike road, greensboro, nc 27409 - 9421 ds13 12 1 9 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 d evices, 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 c omponent circuitry, recommended application circuitry and specifications at any time without prior notice. 6 of 7 r ffm5541 proposed pcb pattern
rf micro devices inc . 7628 thorndike road, greensboro, nc 27409 - 9421 ds13 12 1 9 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 d evices, 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 c omponent circuitry, recommended application circuitry and specifications at any time without prior notice. 7 of 7 r ffm5541 proposed pin names and descriptions pin name description 1 gnd ground. 2 ant this is the common port (antenna ). matched to 50 ? . external dc blocking capacitor required. 3 gnd ground. 4 lna_en lna enable/bypass enable control pin. see switch truth table for proper settings. 5 gnd ground. 6 vdd supply voltage to the lna. 7 nc no board connection allowed. 8 rx_out receive port for 802.11a/n band. rx output inclu des integrated dc - block and 50 ? match. 9 nc no board connection allowed. 10 gnd ground. 11 tx_in transmit port for 802.11a/n band. matched to 50 ? . external dc blocking capacitor required. 12 c_tx/rx transmit and receive mode control pin. see switch truth table for proper settings.
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