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1 of 14 optimum technology matching ? applied gaas hbt ingap hbt gaas mesfet sige bicmos si bicmos sige hbt gaas phemt si cmos si bjt gan hemt 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. ?2006, 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 sales-support@rfmd.com. ordering information rf mems ldmos RF5765 2.4 ghz 802.11 b/g/n wlan front-end module the RF5765 provides a complete integrated solution in a single front end module (fem) for wlan 802.11b/g/n and bluetooth ? systems. the ultra small form factor and integrated matching greatly reduces the number of external components and layout area in the customer application. this simplifies the total front end solution by reducing the bill of materials, sys- tem footprint, and manufacturability cost. the RF5765 integrates a 2.4 ghz power amplifier (pa), low noise amplifier (lna), power detector coupler for improved accuracy, and some filtering for harmonic rejection. the RF5765 is capable of receiving wlan and bluetooth ? simultaneously. the device is provided in a 3 mm x 3 mm x 0.5 mm, 16-pin package. this module meets or exceeds the rf front end needs of ieee 802.11b/g/n wlan rf systems. features ? integrated 2.4 ghz b/g/n amplifier, lna, sp3t switch, and power detector coupler ? single supply voltage 3.0 v to 4.8 v ? p out = 20 dbm, 11g, ofdm at <4% evm, 23 dbm 11b meeting 11b spectral mask applications ? ieee802.11b/g/n wlan ? 2.5 ghz ism band solutions ? portable battery-powered equipment RF5765 2.4 ghz 802.11 b/g/n wlan front-end module RF5765pck-410 fully assembled evaluation board with 5 piece sample ds101012 ? ? package style: qfn, 16-pin, 3 mm x 3 mm x 0.5 mm
2 of 14 RF5765 ds101012 7628 thorndike road, greensboro, nc 27409-9421 for sales or technical support, contact rfmd at (+1) 336-678-5570 or sales-support@rfmd.com. absolute maximum ratings parameter rating unit dc supply voltage (continuous with no damage) 5.4 v dc supply current 500 ma full specification temp range (full spec. compliant) -10 to +70 c extreme operating (reduced performance) -40 to -10 +70 to +85 c storage temperature -40 to +150 c antenna port nominal impedance 50 ? maximum tx input power into 50 ? load for 11b/g/n (no damage) 0 dbm maximum rx input power (no damage) 0 dbm moisture sensitivity msl2 parameter specification unit condition min. typ. max. 2.4 ghz transmit parameters compliance ieee802.11b, ieee802.11g, fcc cfg 15.247, .205, .209, en, and jdec operating conditions v cc =3.0 v to 4.2 v (spec compliant); v cc > 4.2 v to 4.8 v (reduced performance); v reg =3.0 v to 3.2 v; switch con- trol voltage = 3.0 v to 3.6 v; temp = -10 c to +70 c (spec compliant); temp=-30 c to -10 c and +70c to +85 c (reduced performance). unless noted otherwise. frequency 2.4 2.5 ghz power supply 3.0 3.3 4.2 v power amplifier voltage supply (v cc ) v reg voltage on 3.0 3.1 3.2 v pa in ?on? state off 0.00 0.20 v pa in ?off? state output power 11g 18 19.5 dbm 54 mbps ofdm 64 qam, v cc > 3.0 v, temp=25 c 19 20 dbm 54 mbps ofdm 64 qam, v cc > 3.3 v, temp=25 c 11b 20 23 dbm 11 mbps cck signal, bt = 0.45, v cc >= 3.3 v, temp=25 c evm 3.3 4.0 % p out (g) = rated output power, 54 mbps ofdm, 50 ? , see note 1 adjacent channel power p out (b) = 23 dbm, 11 mbps cck signal, v cc >=3.3 v, see note 4 acp1 -36 -33 dbc +/- 11 mhz offset from carrier acp2 -56 -51 dbc +/- 22 mhz offset from carrier gain 26 30 34.5 db gain variation slope at rated power and a given supply voltage range 3.0 4.8 v v cc (average) 0.5 db/v v cc (instantaneous) 1 db/v frequency -0.5 +0.5 db 2.4 ghz to 2.5 ghz over temperature -1.75 +1.75 db v cc = 3.3 v, v reg = 3.1 v, freq =2.45 ghz caution! esd sensitive device. 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 perfor- mance or functional operation of the device under absolute maximum rating condi- tions is not implied. rohs status based on eu directive 2002/95/ec (at time of this document revision). the information in this publication is believed to be accurate and reliable. however, no responsibility is assumed by rf micro devices, 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.
3 of 14 RF5765 ds101012 7628 thorndike road, greensboro, nc 27409-9421 for sales or technical support, contact rfmd at (+1) 336-678-5570 or sales-support@rfmd.com. parameter specification unit condition min. typ. max. 2.4 ghz transmit parameters, continued typical input power 11g -9 dbm 11b -5 dbm power detect power range 0 23 dbm voltage range 0.1 1.5 v resistance 10 k ? capacitance 10 pf sensitivity 0 < p out < 6 dbm 3 mv/db 6 < p out < 23 dbm 8 350 mv/db current consumption (i cc )v cc = 3.3 v, v reg = 3.1 v, t = 25c quiescent current 90 ma rf = ?off? i cq variation from nominal +/- 20 ma 11g 170 200 ma rf p out = 18.5 dbm, 11g, 50 ? 11b 220 290 ma 11 mbps cck signal, bt=0.45, rated output power, v cc =3.3 v, temp=25 c, 50 ? i reg 3mav reg > 3.0 v v cc leakage current 2 10 ? av cc = 4.8 v, v reg = c_bt = c_rx = c_bwrx < 0.2 v input port impedance 50 ? input port return loss 10 15 db ruggedness no damage conditions: max operating voltage, max input power, max temperature output vswr 10:1 input power -5 dbm stability pa must be stable from 0 dbm to 20 dbm. no spurs above -41.25 dbm for non-harmonic related signals. output vswr 6:1 cw signal, p out = 20 dbm, all phases out-of-band emissions 2310 mhz to 2390 mhz and 2483.5 mhz to 2500 mhz (fcc restricted bands) -41.25 dbm/mhz p out = 16.5 dbm, 54 mbps ofdm modulation, 64qam, rbw = 1 mhz, vbw = 100 khz, v cc = 3.3 v, v reg = 3.1 v -41.25 dbm/mhz p out = 20.5 dbm, 11 mbps cck modulation, bt=0.45, rbw = 1 mhz, vbw = 100 khz, v cc = 3.3 v, v reg = 3.1 v harmonics 11b modulation, 1 mbps, bw = 1 mhz, up to 3:1 load, p out = 20 dbm second -23 dbm 4.80 ghz to 5.00 ghz third -20 dbm 7.20 ghz to 7.50 ghz turn-on/off time 0.5 1.0 ? s output stable to within 90% of final gain, note 1
4 of 14 RF5765 ds101012 7628 thorndike road, greensboro, nc 27409-9421 for sales or technical support, contact rfmd at (+1) 336-678-5570 or sales-support@rfmd.com. parameter specification unit condition min. typ. max. 2.4 ghz receive parameters compliance ieee802.11b, ieee802.11g, fcc cfg 15.247, .205, .209, en, and jdec frequency 2.4 2.5 ghz lna voltage supply (lna v cc ) 3.0 3.3 4.2 v lna v cc can be tied to v batt at all times lna current 10 ma lna in ?on? state 05 ? a lna in ?off? state (c_rx = low, lna v cc = on) lna input p1db -8 -7 dbm gain wlan rx gain 16 18 20 db wlan rx mode simultaneous wlan/bt rx mode 11 13 15 db wlan rx/bt mode, lna ?on? noise figure v cc > 3.3 v, including switch wlan rx 2.1 3.5 db wlan rx mode (lna ?on?) simultaneous wlan/bt rx mode 3 4 db wlan rx/bt mode (lna ?on?) passband ripple -0.2 +0.2 db wlan rx mode -0.5 +0.5 db wlan rx/bt mode wlan rx port return loss 9.6 db 5 db switch in wlan rx/bluetooth mode wlan rx port impedance 50 ? no external matching bluetooth parameters frequency 2.4 2.5 ghz insertion loss bt tx/rx only 1.2 1.5 db bluetooth mode bt/wlan rx gain (simultaneous mode) 11 13 15 db wlan rx/bt mode, lna ?on? passband ripple -0.2 +0.2 db bluetooth mode -0.5 +0.5 db wlan rx/bt mode input p1db 27 30 db bt mode, over temp, c_bt = 3.3 v to 3.6 v bluetooth port return loss 9.6 db switch in bluetooth mode 7 db switch in wlan rx/bluetooth mode other requirements antenna port impedance output 50 ? return loss 10 db isolation antenna to receive 20 db in bt mode (measured from ant to rx port) antenna to bluetooth ? 20 db in tx mode (measured from ant to bt port) antenna to receive 20 db in tx mode (measured from ant to rx port) switch control voltage c rx, c bt, and c bw rx control lines low 0 0.2 v switch is in the low state (l) high 1.7 3.3 3.6 v switch is in the high state (h) switch control current 2 10 ? a per control line (c_bt, c_bwrx) c_rx current 100 ? a over v cc , frequency and temperature. switch control speed 100 nsec switch p1db 28 dbm
5 of 14 RF5765 ds101012 7628 thorndike road, greensboro, nc 27409-9421 for sales or technical support, contact rfmd at (+1) 336-678-5570 or sales-support@rfmd.com. switch control logic *the fem can be placed in receive wlan and bluetooth ? modes simultaneously with increased insertion loss. parameter specification unit condition min. typ. max. other requirements, continued esd human body model 500 v eia/jesd22-114a rf pins 1000 v eia/jesd22-114a dc pins charge device model 500 v jesd22-c101c all pins note 1: the pa module must operate with gated bias voltage input at 1% to 99% duty cycle. note 3: values to be agreed to upon characterization data review: current, gain, return loss, detector sensitivity and output p ower. note 4: the output power for channels 1 and 11 may be reduced to meet fcc restricted band requirements. mode vreg c rx c bt c bwrx standby llll wlan tx h l l l wlan rx l h l l wlan rx/bt* l h l h bt rx l l h l bt tx l l h l
6 of 14 RF5765 ds101012 7628 thorndike road, greensboro, nc 27409-9421 for sales or technical support, contact rfmd at (+1) 336-678-5570 or sales-support@rfmd.com. pin out pin function description 1 tx_in rf input for the 802.11b/g pa. input is matched to 50 ? and dc block is provided. 2 vreg regulated voltage for the bias control circuit, and the tx control port of the sp3t which is also tied to this pin. an external bypass capacitor may be needed on the v reg line for decoupling purposes. 3 rx out receive port for 802.11b/g band. internally matched to 50 ? . dc block provided. 4 lna vdd voltage supply for the lna. 5 c_bwrx spst switch control pin. (simultaneous wlan and bt receive.) see truth table for proper level. 6 c rx receive switch control pin. see switch truth table for proper level. 7 n/c no connect. 8bt rf bidirectional port for bluetooth ? . input is matched to 50 ? and dc block is provided. 9 c_bt bluetooth ? switch control pin. see truth table for proper level. 10 ant port matched to 50 ? and is dc blocked internally. 11 gnd ground. 12 n/c no connect. 13 n/c no connect. 14 vcc supply voltage for the pa. 15 vcc supply voltage for the bias circuit of the pa. 16 pdetect power detector voltage for tx section. pdet voltage varies with output power. may need external decoupling capacitor for noise bypassing. may need external circuitry to bring output voltage to desired level.
7 of 14 RF5765 ds101012 7628 thorndike road, greensboro, nc 27409-9421 for sales or technical support, contact rfmd at (+1) 336-678-5570 or sales-support@rfmd.com. package drawing 1.900 1.900 pin 1 indicato r 3.000 0.1 3.000 0.1 0.230 0.062 0.450 0.05 0.500 0.300 0.550 0.030.05 0.152.05 0.25 0.238 notes: 1 shaded area is pin 1 indicator
8 of 14 RF5765 ds101012 7628 thorndike road, greensboro, nc 27409-9421 for sales or technical support, contact rfmd at (+1) 336-678-5570 or sales-support@rfmd.com. RF5765 pcb footprint and stencil recommendations
9 of 14 RF5765 ds101012 7628 thorndike road, greensboro, nc 27409-9421 for sales or technical support, contact rfmd at (+1) 336-678-5570 or sales-support@rfmd.com. application schematic
10 of 14 RF5765 ds101012 7628 thorndike road, greensboro, nc 27409-9421 for sales or technical support, contact rfmd at (+1) 336-678-5570 or sales-support@rfmd.com. theory of operation the RF5765 front end module (fem) is designed for wlan applications in the 2.5 ghz ism band. it can be applied in many por- table applications such as handsets, portable media players, and portable battery power equipment. this highly integrated module can be connected directly to the battery without additional voltage regulators. wlan transmit mode the RF5765 requires a single positive supply (v cc ), a positive supply for switch controls, and a regulated supply for the v reg to maintain nominal bias current. the RF5765 transmit path has a typical gain of 30 db from 2.4 ghz to 2.5 ghz, and delivers 20 dbm typical output power under 54mbps ofdm modulation and 23 dbm under 1mbps 11b modulation. the RF5765 con- tains basic filter components to produce a bandpass response for the transmit path. due to space constraints inside the mod- ule, filtering is limited to a few resonant poles and additional filters may be required depending upon the end-user?s application. while in transmit mode, the active components are the power amplifier (pa) and the tx branch of the sp3t switch. refer to the logic control table for proper settings. tx biasing instructions ? connect the tx input (pin-1) to a signal generator and a spectrum analyzer at the antenna output (pin-10) ?set v cc to 3.3 v with v reg set to 0 v ? turn v reg on and set voltage to 3.1 v. v reg controls the current drawn by the pa and it should quickly reach a quiescent cur- rent of approximately 90 ma20 ma. care must be exercised not to exceed 3.5 v on the v reg pin or the part may be dam- aged. ? control bias to the transmit branch of the sp3t switch is tied directly to v reg ? the sp3t controls for the off branches (c_rx and c_bt) must be set to a logic ?low? (0.2 v max) or grounded. in the event that one of these branches is left floating or in a logic ?high? the performance of the pa will degrade significantly. likewise , unused rf ports must be terminated in 50 to simulate actual system conditions and prevent rf signals from coupling back to the pa. ? turn rf on wlan receive mode within the frequency band of operation 2.4 ghz to 2.5 ghz, the RF5765 wlan receive path has a typical gain of 18 db and a nf of 2.1 db with about 10 ma of current. in rx mode, only the rx branch of the sp3t and the lna are active. refer to the logic control table for proper settings. rx biasing instructions ? connect the rx input (ant/pin-10) to a signal generator and a spectrum analyzer at the rx output (pin-3). a vna may be used as well. ? turn the lna bias on (pin-4) and set the voltage to 3.3 v ? set c_rx (pin-6) high. this turns on the receive branch of the sp3t. ? the sp3t controls for the off branches (v reg and c_bt) must be set to a logic ?low? (0.2 v max) or grounded. in the event that one of these branches is left floating or in a logic ?high? the performance will degrade. it is recommended to terminate unused rf ports in 50 . ? set the control bias for the spst switch (c_bwrx/pin-5) ?low? during wlan rx only mode. ? turn rf on
11 of 14 RF5765 ds101012 7628 thorndike road, greensboro, nc 27409-9421 for sales or technical support, contact rfmd at (+1) 336-678-5570 or sales-support@rfmd.com. wlan and bluetooth ? receive (simultaneous mode) the rf765 wlan and bluetooth ? receive circuits were specifically designed to address issues of simultaneous operation. in this mode both signals can be received at the same time when the c_bwrx (pin-5) is set high. the typical gain for each rf path is approximately 13 db and a nf of 3 db. during simultaneous mode the active components are the lna, the spst switch, and only the rx branch of the sp3t. refer to the logic control table for proper settings. simultaneous mode biasing instructions ? connect the rf input (ant/pin-10) to a signal generator and a spectrum analyzer at the rx (pin-3) and bt (pin-8) rf ports. a m ultiport vna may be used as well. ? turn the lna bias on (pin-4) and set the voltage to 3.3 v ? set c_rx and c_bwrx high. this turns on the receive branch of the sp3t and the spst switch. ? the sp3t controls for the off branches (v reg and c_bt) must be set to a logic ?low? (0.2 v max) or grounded. in the event that one of these branches is left floating or in a logic ?high? the performance will degrade. it is recommended to terminate unused rf ports in 50 . ? turn rf on bluetooth ? mode the rf765 bluetooth ? only mode is implemented through the sp3t switch by setting c_bt ?high.? typical insertion loss is about 1.2 db. bluetooth ? biasing instructions ? connect the rf input (ant/pin-10) to a signal generator and a spectrum analyzer at the bt rf port. a vna may be used in place of the sig gen and sa. ? set c_bt (pin-9) ?high.? this turns the bluetooth ? branch of the sp3t switch on. ? the sp3t controls for the off branches (v reg and c_rx) must be set to a logic ?low? (0.2 v max) or grounded. do not leave floating. ? terminate unused rf ports in 50 ? turn rf on application circuit and layout recommendations the RF5765 integrates the matching networks and dc blocking capacitors for all rf ports. this greatly reduces the number of external components and layout area needed to implement this fem. typically only a total of four external components are required to achieve nominal performance. however, depending on board layout and the many noise signals that could poten- tially couple to the RF5765, additional bypassing capacitors may be required to properly filter out unwanted signals that might degrade performance. the lna bias components consist of an inductor and a decoupling capacitor. the inductor value is critical to optimize nf and return loss at the rx output. for best performance and trade off between critical parameters such as nf, gain, and ip3, the total inductance including board trace should be approximately 1.2 nh. the 5.6k series resistor for the bluetooth ? control line helps to prevent unwanted signal from coupling to this pin. the resistor should be place as close as possible to the pack- age pin. the last component needed in the application circuit is a low frequency bypass capacitor on the v cc line. in general, it is good rf practice to have proper decoupling of supply lines to filter out noise. occasionally, depending on the level of cou- pling or parasitics of the board, a high frequency bypass capacitor must be added as well. in order to optimize performance for both the transmit and receive paths, a good layout design must be implemented. in addi- tion to designing 50 ? rf lines, proper grounding along the rf traces and on the fem ground slug must be exercised. this will minimize coupling and provide good thermal dissipation when the pa is operating at high power. for reference, the rfmd eval- uation board uses 9 thermal ground vias (hole/capture pad 12/22mil) on the ground slug. additionally, if space permitted, v cc and control lines must be isolated from each other with ground vias in between them. rfmd evaluation board gerbers are available upon request.
12 of 14 RF5765 ds101012 7628 thorndike road, greensboro, nc 27409-9421 for sales or technical support, contact rfmd at (+1) 336-678-5570 or sales-support@rfmd.com. RF5765 transmit performance graphs 0 2 4 6 8 10 12 0.231234567891011121314151617181920212223 evm (%) output power (dbm) RF5765: evm vs. output power at temp=-10c (vcc=3.3v; vreg=3.1v) 2400mhz 2450mhz 2500mhz 0 2 4 6 8 10 12 0.191234567891011121314151617181920212223 evm (%) output power (dbm) RF5765: evm vs. output power at temp=+25c (vcc=3.3v; vreg=3.1v) 2400mhz 2450mhz 2500mhz 0 2 4 6 8 10 12 14 0.75 1.5 2.5 3.5 4.5 5.5 6.5 7.5 8.5 9.5 10.5 11.5 12.5 13.5 14.5 15.5 16.5 17.5 18.5 19.5 20.5 21.5 22.5 23.34 evm (%) output power (dbm) RF5765: evm vs. output power at temp=+70c (vcc=3.3v; vreg=3.1v) 2400mhz 2450mhz 2500mhz 20 22 24 26 28 30 32 34 0 2 4 6 8 10 12 14 0.231234567891011121314151617181920212223 gain (db) evm (%) output power (dbm) RF5765: evm and gain vs. output power vs. temperature (vcc=3.3v; vreg=3.1v; freq=2450mhz) -10c +25c +70c 20 22 24 26 28 30 32 34 0 0.05 0.1 0.15 0.2 0.25 0.3 0.35 0.23 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 gain (db) operang current (a) output power (dbm) RF5765: operang current and gain vs. output power vs. temperature (vcc=3.3v; vreg=3.1v; freq=2450mhz) -10c +25c +70c 20 22 24 26 28 30 32 34 0 0.05 0.1 0.15 0.2 0.25 0.3 0.35 0.231234567891011121314151617181920212223 gain (db) operang current (a) output power (dbm) RF5765: operang current and gain vs. output power vs. frequency (vcc=3.3v; vreg=3.1v; temp=25c) 2400mhz 2450mhz 2500mh
13 of 14 RF5765 ds101012 7628 thorndike road, greensboro, nc 27409-9421 for sales or technical support, contact rfmd at (+1) 336-678-5570 or sales-support@rfmd.com. RF5765 transmit performance graphs (continued) 20 22 24 26 28 30 32 34 0 0.05 0.1 0.15 0.2 0.25 0.3 0.35 0.231234567891011121314151617181920212223 gain (db) operang current (a) output power (dbm) RF5765: operang current and gain vs. output power vs. vreg (vcc=3.3v; freq=2450mhz; temp=25c) vreg=3.0v vreg=3.1v vreg=3.2v 0 0.001 0.002 0.003 0.004 0.005 0.231234567891011121314151617181920212223 ireg (a) output power (dbm) RF5765: ireg current vs. output power vs. vreg voltage (vcc=3.3v; freq=2450mhz; temp=25c) vreg=3.0v vreg=3.1v vreg=3.2v 0 0.001 0.002 0.003 0.004 0.005 0.23 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 ireg (a) output power (dbm) RF5765: ireg current vs. output power vs. temperature (vcc=3.3v; vreg=3.1v; freq=2450mhz) -10c +25c +70c -60 -55 -50 -45 -40 -35 -30 -25 -20 0.15246810121416182022 acp1 (dbc) output power (dbm) RF5765: acp1 vs. output power vs. temperature (vcc=3.3v; vreg=3.1v; freq=2450mhz) -10c +25c +70c -80 -75 -70 -65 -60 -55 -50 -45 -40 -35 -30 0.15246810121416182022 acp2 (dbc) output power (dbm) RF5765: acp2 vs. output power vs. temperature (vcc=3.3v; vreg=3.1v; freq=2450mhz) -10c +25c +70c
14 of 14 RF5765 ds101012 7628 thorndike road, greensboro, nc 27409-9421 for sales or technical support, contact rfmd at (+1) 336-678-5570 or sales-support@rfmd.com. RF5765 receive performance graphs 10 12.5 15 17.5 20 22.5 25 2400 2450 2500 gain (db) frequency (mhz) RF5765: wlan receiver gain (lna vdd=3.3v; c_rx=3.3v) -10c +25c +70c 5 7.5 10 12.5 15 17.5 20 2400 2450 2500 current (ma) frequency (mhz) RF5765: wlan receiver operating current (lna vdd=3.3v; c_rx=3.3v) -10c +25c +70c 0 0.5 1 1.5 2 2.5 3 3.5 4 2400 2450 2500 nf (db) frequency (mhz) RF5765: wlan receiver noise figure (lna vdd=3.3v; c_rx=3.3v) -30c +25c +70c

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