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1 of 20 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 ? gnd gnd rx1 gnd gnd gpctrl2 gnd gnd gnd rx4 gnd rfin hb rfin lb vramp tx enable gpctrl0 gpctrl1 vbatt gnd antenna rx2 rx3 esd protection 78 6 5 4 3 2 122 20 19 18 17 16 15 14 13 12 11 10 9 21 switch amplifier cmos controller rf7161 quad-band gsm850/egsm900/dcs1800/ pcs1900 transmit module the rf7161 is a quad-band (gsm850/egsm900/dcs1800/pcs1900) gsm/gprs, class 12 compliant transmit module with four interchangeable receive ports. this transmit module builds upon rfmd?s leading power amplifier with powerstar? integrated power control technol- ogy, phemt switch technology, and integrated tr ansmit filtering for best-in-class harmonic per- formance. the results are high performance, reduced solution size, and ease of implementation. the device is designed for use as the final portion of the transmitter section in a gsm850/egsm900/dcs1800/pcs1900 handset and eliminates the need for a pa-to- antenna switch module matching network. the rf7161 features rfmd?s latest integrated power-flattening circuit which significantly reduces current and power variation into load mismatch. additionally, a v batt tracking feature is incorporated to maintain switching performance as supply voltage decreases. the rf7161 also integrates an esd filter to provide excellent esd protection at the antenna port. the rf7161 is designed to provide maximum efficiency at rated p out . features ? enhanced performance transmit module ? no external routing ? high efficiency at rated p out v batt =3.5v gsm850/egsm900=40% dcs1800/pcs1900=37% ? low rx insertion loss ? four symmetrical rx ports ? 0dbm to 6dbm drive level, >50db of dynamic range ? integrated power flattening circuit ? v batt tracking circuit applications ? 3v quad-band gsm/gprs handsets ? gsm850/egsm900/dcs180 0/pcs1900 products ? gprs class 12 compliant ? portable battery-powered equipment ds091006 ?? package: module 6.63mmx5.24mm1.0mm rf7161quad- band gsm850/egs m900/dcs18 00/ rf7161 quad-band gsm850/egsm900/dcs1800/pcs1900 trans- mit module rf7161sb transmit module 5-piece sample pack rf7161pcba-41x fully assembled evaluation board
2 of 20 rf7161 ds091006 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 supply voltage -0.3 to +6.0 v power control voltage (v ramp ) -0.3 to +1.8 v input rf power +10 dbm max duty cycle 50 % output load vswr 20:1 operating case temperature -20 to +85 c storage temperature -55 to +150 c parameter specification unit condition min. typ. max. esd esd rf ports 1000 v hbm, jesd22-a114 1000 v cdm, jedec jesd22-c101 esd antenna port 8 kv iec 61000-4-2 esd any other port 1000 v hbm, jesd22-a114 1000 v cdm, jedec jesd22-c101 overall power control v ramp power control ?on? 1.8 v max. p out power control ?off? 0.25 v min. p out v ramp input capacitance 15 20 pf dc to 200khz v ramp input current 10 ? av ramp =v ramp, max power control range 50 db v ramp =0.25v to v ramp, max overall power supply power supply voltage 3.0 3.5 4.8 v operating limits power supply current 40 80 ? ap in <-30dbm, tx enable=low, v ramp =0.25v, temp=-20c to +85c, v batt =4.8v. overall control signals gpctrl0/1/2 ?low? 0 0 0.5 v gpctrl0/1/2 ?high? 1.25 2.0 v batt v gpctrl0/1/2 ?high current? 1 2 ? a tx enable ?low? 0 0 0.5 v tx enable ?high? 1.25 2.0 v batt v tx enable ?high current? 1 2 ? a rf port input and output imped- ance 50 ? 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 devi ce under absolute maximum rating condi- tions is not implied. rohs status based on eudirective2002/95/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 20 rf7161 ds091006 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. gsm850 band nominal conditions unless otherwise stated. all unused ports are terminated. v batt =3.5v, p in =3dbm, temp=+25c, tx enable=high, vramp=1.8v. tx mode: gpctrl2=low, gpctrl1=high, gpctrl0=low, duty cycle=25%, pulse width=1154 ? s operating frequency range 824 849 mhz input power 036dbmfull p out guaranteed at minimum drive level. input vswr 2:1 2.5:1 over p out range (5dbm to 33dbm) maximum output power 33 33.7 dbm nominal conditions. 31 33.7 dbm v batt =3.1v to 4.8v, p in =0dbm to 6dbm, temp=-20c to +85c, duty cycle=50%, pulse width=2308ms, v ramp < 1.8v. minimum power into 3:1 vswr 30 31.5 dbm the measured delivered output power to the load with the mismatch loss already taken into account with 1db variation margin. efficiency 36 40 % set v ramp =v ramp rated for p out =33dbm 2nd harmonic -40* -33 dbm v ramp =v ramp rated for p out =33dbm. *typical value measured from worst case harmonic fre- quency across the band. 3rd harmonic -40* -33 dbm v ramp =v ramp rated for p out =33dbm. *typical value measured from worst case harmonic fre- quency across the band. all other harmonics up to 12.75ghz -40 -33 dbm v ramp =v ramp rated for p out =33dbm. non-harmonic spurious up to 12.75ghz --36dbmv ramp =v ramp rated for p out =33dbm, also over all power levels (5dbm to 33dbm). forward isolation 1 -57 -41 dbm tx enable low, p in =6dbm, v ramp =0.25v. forward isolation 2 -27 -15 dbm tx enable high, p in =6dbm, v ramp =0.25v. output noise power -87.5 -82 dbm 869mhz to 894mhz. v ramp =v ramp rated for p out =33dbm, rbw=100khz. -118 -74 dbm 1930mhz to 1990mhz. v ramp =v ramp rated for p out =33dbm, rbw=100khz. output load vswr stability (spurious emissions) -36 dbm vswr=12:1, all phase angles (set v ramp=vramp rated for p out < 33dbm into 50 ? load; load switched to vswr=12:1). output load vswr ruggedness no damage or permanent degradation to device vswr=20:1, all phase angles (set v ramp=vramp rated for p out < 33dbm into 50 ? load; load switched to vswr=20:1).
4 of 20 rf7161 ds091006 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. egsm900 band nominal conditions unless otherwise stated. all unused ports are terminated. v batt =3.5v, p in =3dbm, temp=+25c, tx enable=high, vramp=1.8v. tx mode: gpctrl2=low, gpctrl1=high, gpctrl0=low, duty cycle=25%, pulse width=1154 ? s operating frequency range 880 915 mhz input power 036dbmfull p out guaranteed at minimum drive level. input vswr 2:1 2.5:1 over p out range (5dbm to 33dbm). maximum output power 33 33.7 dbm nominal conditions. 31 33.7 dbm v batt =3.1v to 4.8v, p in =0dbm to 6dbm, temp=-20c to +85c, duty cycle=50%, pulse width=2308ms, v ramp < 1.8v. minimum power into 3:1 vswr 30 31.5 dbm the measured delivered output power to the load with the mismatch loss already taken into account with 1db variation margin. efficiency 36 40 % set v ramp =v ramp rated for p out =33dbm 2nd harmonic -40* -33 dbm v ramp =v ramp rated for p out =33dbm. *typical value measured from worst case harmonic fre- quency across the band. 3rd harmonic -40* -33 dbm v ramp =v ramp rated for p out =33dbm. *typical value measured from worst case harmonic fre- quency across the band. all other harmonics up to 12.75ghz -40 -33 dbm v ramp =v ramp rated for p out =33dbm. non-harmonic spurious up to 12.75ghz -36 dbm v ramp =v ramp rated for p out =33dbm, also over all power levels (5dbm to 33dbm). forward isolation 1 -60 -41 dbm tx enable low, p in =6dbm, v ramp =0.25v. forward isolation 2 -27 -15 dbm tx enable high, p in =6dbm, v ramp =0.25v. output noise power -86 -77 dbm 925mhz to 935mhz. v ramp =v ramp rated for p out =33dbm, rbw=100khz. -86 -83 dbm 935mhz to 960mhz. v ramp =v ramp rated for p out =33dbm, rbw=100khz. -118 -87 dbm 1805mhz to 1880mhz. v ramp =v ramp rated for p out =33dbm, rbw=100khz. output load vswr stability (spurious emissions) -36 dbm vswr=12:1, all phase angles (set v ramp=vramp rated for p out < 33dbm into 50 ? load; load switched to vswr=12:1). output load vswr ruggedness no damage or permanent degradation to device vswr=20:1, all phase angles (set v ramp=vramp rated for p out < 33dbm into 50 ? load; load switched to vswr=20:1).
5 of 20 rf7161 ds091006 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. dcs1800 band nominal conditions unless otherwise stated. all unused ports are terminated. v batt =3.5v, p in =3dbm, temp=+25c, tx enable=high, vramp=1.8v. tx mode: gpctrl2=low, gpctrl1=high, gpctrl0=high, duty cycle=25%, pulse width=1154 ? s operating frequency range 1710 1785 mhz input power 036dbmfull p out guaranteed at minimum drive level. input vswr 1.5:1 2.5:1 over p out range (0dbm to 30dbm). maximum output power 30 31.5 dbm nominal conditions. 28 31.5 dbm v batt =3.0v to 4.8v, p in =0dbm to 6dbm, temp=-20c to +85c, duty cycle=50%, pulse width=2308ms, v ramp < 1.8v. minimum power into 3:1 vswr 27 28.5 dbm the measured delivered output power to the load with the mismatch loss already taken into account with 1db variation margin. efficiency 32 37 % set v ramp =v ramp rated for p out =30dbm 2nd harmonic -40* -33 dbm v ramp =v ramp rated for p out =30dbm. *typical value measured from worst case harmonic fre- quency across the band. 3rd harmonic -40* -33 dbm v ramp =v ramp rated for p out =30dbm. *typical value measured from worst case harmonic fre- quency across the band. 4th harmonic -36* -28 dbm v ramp =v ramp rated . *typical value measured from worst case harmonic frequency across the band. external low pass filter can be used to attenuate the higher order harmonics. (see application schematic for suggested filter.) all other harmonics up to 12.75ghz -40 -33 dbm v ramp =v ramp rated for p out =30dbm. non-harmonic spurious up to 12.75ghz -36 dbm v ramp =v ramp rated for p out =30dbm, also over all power levels (5dbm to 33dbm). forward isolation 1 -62 -53 dbm tx enable low, p in =6dbm, v ramp =0.25v. forward isolation 2 -27 -15 dbm tx enable high, p in =6dbm, v ramp =0.25v. output noise power -101 -77 dbm 925mhz to 935mhz. v ramp =v ramp rated for p out =33dbm, rbw=100khz. -100 -83 dbm 935mhz to 960mhz. v ramp =v ramp rated for p out =33dbm, rbw=100khz. -93 -79 dbm 1805mhz to 1880mhz. v ramp =v ramp rated for p out =33dbm, rbw=100khz. output load vswr stability (spurious emissions) -36 dbm vswr=12:1, all phase angles (set v ramp=vramp rated for p out < 30dbm into 50 ? load; load switched to vswr=12:1). output load vswr ruggedness no damage or permanent degradation to device vswr=20:1, all phase angles (set v ramp=vramp rated for p out < 30dbm into 50 ? load; load switched to vswr=20:1).
6 of 20 rf7161 ds091006 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. pcs1900 band nominal conditions unless otherwise stated. all unused ports are terminated. v batt =3.5v, p in =3dbm, temp=+25c, tx enable=high, vramp=1.8v. tx mode: gpctrl2=low, gpctrl1=high, gpctrl0=high, duty cycle=25%, pulse width=1154 ? s operating frequency range 1850 1910 mhz input power 036dbmfull p out guaranteed at minimum drive level. input vswr 1.5:1 2.5:1 over p out range (5dbm to 30dbm). maximum output power 30 31.5 dbm nominal conditions. 28 31.5 dbm v batt =3.0v to 4.8v, p in =0dbm to 6dbm, temp=-20c to +85c, duty cycle=50%, pulse width=2308ms, v ramp < 1.8v. minimum power into 3:1 vswr 27 28.5 dbm the measured delivered output power to the load with the mismatch loss already taken into account with 1db variation margin. efficiency 32 37 % set v ramp =v ramp rated for p out =30dbm 2nd harmonic -40* -33 dbm v ramp =v ramp rated for p out =30dbm. *typical value measured from worst case harmonic fre- quency across the band. 3rd harmonic -40* -33 dbm v ramp =v ramp rated for p out =30dbm. *typical value measured from worst case harmonic fre- quency across the band. 4th harmonic -36* -28 dbm v ramp =v ramp rated . *typical value measured from worst case harmonic frequency across the band. external low pass filter can be used to attenuate the higher order harmonics. (see application schematic for suggested filter.) all other harmonics up to 12.75ghz -40 -33 dbm v ramp =v ramp rated for p out =30dbm. non-harmonic spurious up to 12.75ghz -36 dbm v ramp =v ramp rated for p out =30dbm, also over all power levels (5dbm to 30dbm). forward isolation 1 -61 -53 dbm tx enable low, p in =6dbm, v ramp =0.25v. forward isolation 2 -27 -15 dbm tx enable high, p in =6dbm, v ramp =0.25v. output noise power -101 -82 dbm 869mhz to 894mhz. v ramp =v ramp rated for p out =30dbm, rbw=100khz. -94 -74 dbm 1930mhz to 1990mhz. v ramp =v ramp rated for p out =30dbm, rbw=100khz. output load vswr stability (spurious emissions) -36 dbm vswr=12:1, all phase angles (set v ramp=vramp rated for p out < 30dbm into 50 ? load; load switched to vswr=12:1). output load vswr ruggedness no damage or permanent degradation to device vswr=20:1, all phase angles (set v ramp=vramp rated for p out < 30dbm into 50 ? load; load switched to vswr=20:1).
7 of 20 rf7161 ds091006 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. rx section nominal conditions unless otherwise stated. vbatt=3.5v, pin=-10dbm, temp=+25c, tx enable=low, vramp=0.2v, rx1 mode: gpctrl2=high, gpctrl1=low, gpctrl0=low rx2 mode: gpctrl2=low, gpctrl1=high, gpctrll0=low rx3 mode: gpctrl2=low, gpctrl1=high, gpctrl0=high rx4 mode: gpctrl2=low, gpctrl1=low, gpctrl0=high rx frequencies: gsm850=869mhz to 894mhz egsm900=925mhz to 960mhz dcs1800=1805mhz to 1880mhz pcs1900=1930mhz to 1990mhz insertion loss gsm850/egsm900 ant-rx1/2/3/4 1.0 1.3 db see note 1. in-band ripple gsm850/egsm900 ant-rx1/2/3/4 0.03 0.05 db input vswr gsm850/egsm900 ant-rx1/2/3/4 1.3:1 insertion loss dcs1800/pcs1900 ant-rx1/2/3/4 1.4 1.7 db see note 1. in-band ripple dcs1800/pcs1900 ant-rx1/2/3/4 0.05 0.1 db input vswr dcs1800/pcs1900 ant-rx1/2/3/4 1.9:1 tx section switch leakage p out at rx port gsm850, ant-rx1/2/3/4 -10 6 dbm gsm850 tx mode: freq=869mhz to 894mhz, gpctrl2=low, gpctrl1=high. gpctrl0=low, v ramp =v ramp rated for p out =33dbm at antenna port. see note 2. switch leakage p out at rx port egsm900, ant-rx1/2/3/4 -10 6 dbm egsm900 tx mode: freq=925mhz to 960mhz, gpctrl2=low, gpctrl1=high. gpctrl0=low, v ramp =v ramp rated for p out =33dbm at antenna port. see note 2. switch leakage p out at rx port dcs1800, ant-rx1/2/3 -15 -5 dbm gsm850 tx mode: freq=1805mhz to 1880mhz, gpctrl2=low, gpctrl1=high. gpctrl0=high, v ramp =v ramp rated for p out =30dbm at antenna port. see note 2. switch leakage p out at rx port pcs1900, ant-rx1/2/3 -15 -5 dbm gsm tx mode: freq=1930mhz to 1990mhz, gpctrl2=low, gpctrl1=high. gpctrl0=high, v ramp =v ramp rated for p out =30dbm at antenna port. see note 2.
8 of 20 rf7161 ds091006 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. tx section (cont.) switch leakage p out at rx port dcs1800, ant-rx4 -3 5 dbm switch leakage p out at rx port pcs1900, ant-rx4 -3 5 dbm note 1: the insertion loss values listed ta ke board resistive losses into account and are the upper limits of performance assum ing an ideal match. a suggested matching network is supplied in the application schematic on page 14. pcs performance may vary up to 0.6db f rom listed values without matching. note 2: isolation specification set to ensure at least the following isolation at rated power. calculation example: switch leak age=p out at antenna - p out at rx port. lb switch leakage=33-(-10)=43db, hb switch leakage=30-(-15)=45db.
9 of 20 rf7161 ds091006 7628 thorndike road, greensboro, nc 27409-9421 for sales or technical support, contact rfmd at (+1) 336-678-5570 or sales-support@rfmd.com. tx enable gpctrl2 gpctrl1 gpctrl0 tx module mode 0 0 0 0 low power mode (standby) 0100 rx1 0010 rx2 0011 rx3 0001 rx4 1 0 1 0 gsm850/900 tx mode 1 0 1 1 dcs1800/pcs1900 tx mode pin function description interface schematic 1gnd ground. 2gnd ground. 3rf in lb rf input to the gsm850/egsm900 bands. this is a 50 ? input. 4gnd ground. 5rf in hb rf input to the dcs1800/pcs1900 bands. this is a 50 ? input. 6gnd ground. 7gnd ground. 8gnd ground. 9gnd ground. 10 rx1 rx1 of antenna switch. this is a 50 ? output. this port is interchangeable with any other rx port. 11 rx2 rx2 of antenna switch. this is a 50 ? output. this port is interchangeable with any other rx port. 12 rx3 rx3 of antenna switch. this is a 50 ? output. this port is interchangeable with any other rx port. 13 rx4 rx4 of antenna switch. this is a 50 ? output. this port is interchangeable with any other rx port. lb rf in hb rf in
10 of 20 rf7161 ds091006 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 function description interface schematic 14 antenna antenna port. this is a 50 ? output. 15 gnd ground. 16 gnd ground. 17 gpctrl2 control pin that together with gpctrl0 and gpctrl1 selects the band of operation. 18 vbatt power supply for the module. this should be connected to the battery ter- minal using as wide a trace as possible. 19 gpctrl1 control pin that together with gpctrl0 and gpctrl2 selects the band of operation. 20 gpctrl0 control pin that together with gpctrl1 and gpctrl2 selects the band of operation. 21 tx enable this signal enables the pa module for operation with a logic high. the switch is put in tx mode determined by gpctrl0, gpctrl1, and gpctrl2. 22 vramp vramp ramping signal from dac. a simple rc filter is integrated into the rf7161 module. vramp may or may not require additional filtering depending on the baseband selected. tx on tx enable - +
11 of 20 rf7161 ds091006 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 gnd gnd rfin lb 1 2 3 4 5 17 16 15 14 13 22 21 20 19 gnd rfin hb 6 gnd 7 gnd 8 rx1 9 gnd 12 gnd gnd rx4 18 gnd rx2 rx3 gpctrl1 vramp 10 11 23 gnd 23 gnd antenna tx enable gpctrl0 vbatt gpctrl2
12 of 20 rf7161 ds091006 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 product description the rf7161 is a quad-band transmit module (txm) with fully-integrated power control functionality, harmonic filtering, band selectivity, and tx/rx switching. th e txm is self-contained, having 50 ? i/o terminals and four interchangeable rx ports allow- ing quad-band operation. the power control function eliminates all power control circuitry, including directional couplers, dio de detectors, and power control asics, etc. the power control capa bility provides 50db of continuous control range and 70db of total control range, using a dac-compatible, analog voltage input. the tx enable feature provides for pa activation (tx mode) o r rx mode/standby. internal switching provides a low-loss, low-distortion path from the antenna port to the tx path (or rx port) while maintaining proper isolation. overview the rf7161 simplifies the phone design by eliminating the need for the complicated control loop, harmonic filters, and tx/rx switch along with their associated matching components. the po wer control loop can be driven directly from the dac output in the baseband circuit. the module has four rx ports for gsm850/egsm900/dcs1800/pcs1900 op eration. the four rx ports can be used interchangeably. to control the mode of operation th ere are four logic control signal s: tx enable, gpctrl0, gpctrl1 , and gpctrl2. rf7161 offers high efficiency at the rated p out as backed-off efficiency is improved in this txm. power ramping and timing the rf7161 should be powered on according to the power-on se quence below. it is designed to prevent operation of the amplifier under conditions that could cause damage to the device or erratic operation. there are some setup times associated with the control signals of the rf7161. the most important of these is the settling time between txen going high and when vramp can begin to increa se. this time is often referred to as the ?pedestal? and is required so that the internal power control loop and bias circ uitry can settle after being turned on. the rf7161 requires at least 2 ? s or two quarter-bit times for proper settling of the power control loop. the power-down sequence is in opposite order of the power-on sequence. as described in the figure below, vbatt is applied first to provide bias to the silicon control chip. then the rf drive is applied. finally, when txen is high, the vramp signal is held at a constant 0.25v, and 2 ? s later, vramp begins to ramp up. the shape of vramp is important for maintaining the switching transients. the basic shape of the ramping function sh ould be raised cosine to achieve best transient performance.
13 of 20 rf7161 ds091006 7628 thorndike road, greensboro, nc 27409-9421 for sales or technical support, contact rfmd at (+1) 336-678-5570 or sales-support@rfmd.com. power on sequence rf7161 timing diagram power flattening and vbatt tracking the rf7161 has an integrated power flattening circuit that re duces the amount of current variation when a mismatch is pre- sented to the output of the pa. when a mismatch is presented to the output of the pa its output impedance is varied and could present a load that will increase output power. as the outp ut power increases so does the current consumption. the current consumption can become very high if not monitored and limited. the power flattening circuit is integrated onto the cmos con- troller and requires no input from user. into a mismatch, the current varies as the phase changes. the power flattening circuit monito rs current through an internal sense resistor. as the current changes the loop is adjusted in order to maintain current. the result is flatter power and reduc ed current into mismatch. the rf7161 also incorporates a vbatt tracking feature that elim inates the need for the transceiver/baseband to regulate the ramping signal as the supply voltage decreases. the internal ci rcuit monitors the supply voltage and adjusts the ramping signal such that the switching spectrum is minimally impacted. time vbatt gp0 gp1/gp2 tx_en vramp gmsk power on/off sequence 3.0 or 3.1v to 4.8v >1.25v high band <0.5v low band gp2<0.5v >1.25v pa on 1.8v for max pout 0.25v for min pout power on sequence: 1. apply vbatt 2. apply gp0/gp1/gp2 3. apply rfin 4. apply tx_en 5. apply minimum vramp (0.25v) 6. ramp vramp for desired output power rfin can be applied at any time. for good transient response it must be applied before power ramp begins. the power down sequence is the reverse order of the power on sequence. =2s =0s =0s =2s gp1>1.25v rfin 3 dbm
14 of 20 rf7161 ds091006 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 c5 33 pf c4 33 pf c6 33 pf c7 33 pf c1 22 pf c2 56 pf c3 22 uf c8 0.5 pf c10 1.5 pf c11 1.5 pf c9 0.5 pf c12 1.2 pf l2 2.2 nh l1 2.2 nh rx1 gpctrl2 rx4 rfin hb rfin lb vramp tx enable gpctrl0 gpctrl1 vbatt antenna rx2 rx3 esd protection 78 6 5 4 3 2 122 20 19 18 17 16 15 14 13 12 11 10 9 21 switch amplifier cmos controller *all input, output, and antenna traces are 50 ohm microstrip. **vbatt capacitor value may change depending on application. ***rx ports usually connect to saw filters. it is highly recommended to place shunt capacitors c8 ? c11 and inductors l3 and l4 to provide the most flexibility for optimally matching the rx ports to the saw fi lter for best rx performance. the series-l/shunt c networks are used on rx3 and rx4 which are recommended for high-band operation and give a greater degree of freedom in finding the correct match. the values shown for these components may not be ideal for each application, therefore, some experiment ation may be warranted to find the correct values. series capacitors c4 ? c7 are required to block the dc voltage that is present on the rx pins. ****the recommended ordering of the rx ports for transceiver la yout compatibility and isolation requirements is as follows: rx1=gsm850, rx2=egsm900, rx3=dcs1800, and rx4=pcs1900. *****if placing an attenuation network on the input to the power am plifier, ensure that it is positioned on the transceiver sid e of the capacitor c1 (or c2) to prevent adversely affecting the base biasing of the power amplifier. ******for control of higher order high-band ha rmonics, a low-pass filter is required on the ant output. the values listed in t his application schematic are suggested only and depend on the particular application, as they are heavily dependent on the phone circuit layout. l3 2.7 nh l4 2.7 nh
15 of 20 rf7161 ds091006 7628 thorndike road, greensboro, nc 27409-9421 for sales or technical support, contact rfmd at (+1) 336-678-5570 or sales-support@rfmd.com. evaluation board schematic notes: c9, c10, c11, and c12 are optional decoupling capacitors which may not be needed in the application. rx1, rx2, rx3, and rx4 usually connect to saw filters. c5, c6, c7, and c8 are used to block the dc voltage present on rx pins. c13, c14, c15, and c16 are used to match the rx pins to a 50 ? filter. 1 2 c1 22pf 1 2 c2 56pf 2 1 c4 dni 1 2 c6 33pf 1 2 c8 33pf j1 j4 j2 j7 ant j5 vramp gpctrl 0 gpctrl 1 txenable 12 c9 100pf 12 c10 100pf 1 2 c11 100pf gpctrl 0 gpctrl 1 txenable hb_rf_in lb_rf_in rx1 rx4 + c3 22uf vbatt gpctrl 2 12 c5 33pf 1 2 c7 33pf j3 rx2 j6 rx3 gpctrl 2 12 c12 100pf gnd 1 gnd 2 gnd 7 rfin_hb 5 gnd 4 rfin_lb 3 rx3 12 rx2 11 rx1 10 gnd 9 gnd 8 gnd 6 rx4 13 gnd 15 gnd 16 gpctrl2 17 ant 14 vbatt 18 gpctrl1 19 gpctrl0 20 tx_en 21 vramp 22 gnd 23 u1 rf7161 c13 0.5pf c14 0.5pf c15 0.5pf c16 0.5pf 1 2 3 4 5 6 7 8 9 10 11 12 13 14 hdr_1x14 gpctrl 0 gpctrl 1 txenable vramp vbatt v sense gpctrl 2
16 of 20 rf7161 ds091006 7628 thorndike road, greensboro, nc 27409-9421 for sales or technical support, contact rfmd at (+1) 336-678-5570 or sales-support@rfmd.com. evaluation board layout
17 of 20 rf7161 ds091006 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 rf7161 yyww trace code notes: yy indicates year, ww indicates work week, and trace code is a sequential number assigned at device assembly. shaded areas represent pin 1 location.
18 of 20 rf7161 ds091006 7628 thorndike road, greensboro, nc 27409-9421 for sales or technical support, contact rfmd at (+1) 336-678-5570 or sales-support@rfmd.com. pcb design requirements pcb surface finish the pcb surface finish used for rfmd's qualification process is electroless nickel, immersion gold. typical thickness is 3 ? inch to 8 ? inch gold over 180 ? inch nickel. pcb land pattern recommendation pcb land patterns for rfmd components are based on ipc-735 1 standards and rfmd empirical data. the pad pattern shown has been developed and tested for optimized assembly at rf md. the pcb land pattern has been developed to accommodate lead and package tolerances. since surface mount processes va ry from company to company, careful process development is recommended. pcb metal land and solder mask pattern
19 of 20 rf7161 ds091006 7628 thorndike road, greensboro, nc 27409-9421 for sales or technical support, contact rfmd at (+1) 336-678-5570 or sales-support@rfmd.com. tape and reel carrier tape basic dimensions are based on eia 481. the pocket is designed to hold the part for shipping and loading onto smt manufacturing equipment, while protecting the body and the solder terminals from damaging stresses. the individual pocket design can vary from vendor to vendor, but width and pitch will be consistent. carrier tape is wound or placed onto a shipping reel either 330mm (13 inches) in diameter or 178mm (7 inches) in diameter. the center hub design is large enough to ensure the radius formed by the carrier tape around it does not put unnecessary stress on the parts. prior to shipping, moisture sensitive parts (msl level 2a-5a) ar e baked and placed into the pockets of the carrier tape. a cove r tape is sealed over the top of the entire length of the carrier tape. the reel is sealed in a moisture barrier esd bag with the appropriate units of desiccant and a humidity indicator card, whic h is placed in a cardboard shipping box. it is important to note that unused moisture sensitive parts need to be resealed in the moisture barrier bag. if the reels exceed the exposure limit and need to be rebaked, most carrier tape and shipping reels are not rated as bakeable at 125c. if baking is required, devices may be baked according to section 4, table 4-1, of joint industry standard ipc/jedec j-std-033. the table below provides information for carrier tape and reel s used for shipping the devices described in this document. tape and reel rfmd part number reel diameter inch (mm) hub diameter inch (mm) width (mm) pocket pitch (mm) feed units per reel RF7161TR13 13 (330) 4 (102) 12 8 single 2500 rf7161tr7 7 (178) 2.4 (61) 12 8 single 750 part number yyww trace code part number yyww trace code part number yyww trace code unless otherwise specified, all dimension tolerances per eia-481. 400 mm leade r direction of feed sprocket holes toward rear of reel 400 mm trailer top view pin 1 location part number yyww trace code figure 1. 5.24mmx6.63mm (carrier tape drawing with part orientation)
20 of 20 rf7161 ds091006 7628 thorndike road, greensboro, nc 27409-9421 for sales or technical support, contact rfmd at (+1) 336-678-5570 or sales-support@rfmd.com. rohs compliant: yes package total weight in grams (g): 0.121 compliance date code: - bill of materials revision: - pb free category: e4 pb cd hg cr vi pbb pbde die 000000 molding compound 000000 lead frame 000000 die attach epoxy 000000 wire 000000 solder plating 000000 * directive 2002/95/ec of the european parliament and of the council of 27 january 2003 on the restriction of the use of certain hazardous substances in electrical and electronic equipment rohs* banned material content bill of materials parts per million (ppm) this rohs banned material content declaration was prepared solely on information, including analytical data, provided to rfmd b y its suppliers, and applies to the bill of materials (bom) revision noted above.

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