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1 of 13 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 bifet hbt ldmos 1 2 3 4 6 5 8 7 logic control rf in gnd vref gain select gnd rf out nc nc RF2374 3v low noise amplifier the RF2374 is a switchable low noise amplifier with a high dynamic range designed for digital cellular and wlan applications. the device functions as an outstanding front end low noise amplifier with i cc as low as 3ma. the bias current may be set externally. the ic is featured in a 2.2mmx2.2mmx0.6mm module-compatible plastic package. features ? low noise and high intercept point ? adjustable bias current ? power down control ? low insertion loss bypass feature ? 1.8v to 4v operation (see note: page 2) ? 800mhz to 3.8ghz operation ? esd class 1b applications ? wlan lna with bypass feature ? cdma pcs lna with bypass feature ? gps lna with bypass feature ? general purpose amplification ? wimax lna with bypass function ? cdma 800 lna RF2374 3v low noise amplifier RF2374 pck-410 fully assembled evaluation board, 2.4ghz to 2.5ghz with standard tune RF2374 pck-411 fully assembled evaluation board, 1.5ghz to 2.2ghz with standard tune ds101118 ? package style: qfn, 8-pin, 2.2mmx2.2mmx0.6mm
2 of 13 RF2374 ds101118 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 -0.5 to +6.0 v dc input rf level at f<2.3ghz +5 (see note) dbm input rf level at f>2.3ghz +10 (see note) dbm current drain, i cc 32 ma operating ambient temperature -40 to +85 c storage temperature -40 to +150 c note: exceeding any one or a combination of the above maximum rating limits may cause permanent damage. input rf transients to +15dbm will not harm the device. for sustained operation at inputs > +5dbm, a small dropping resistor is recommended in series with the v cc in order to limit the current due to self-biasing to <32ma. furthermore, while the lna is in bypass mode, and for sustained operation at the input, +10dbm is the maximum recommended power level for frequencies above 2300mhz. +5dbm is the maximum recommended power level for frequencies <2300mhz. parameter specification unit condition min. typ. max. operating range t amb =+25c, v cc =3.0v frequency range 50 4000 mhz wibro/wlan/wimax low noise amplifier frequency 2300 2700 mhz high gain mode gain select<0.8v, v ref =3v, t=+25c gain 13.5 14.5 db noise figure 1.3 1.5 db input ip3 +7 +9 dbm iip3 will improve if i cc is raised above 7ma. ip1db 0 dbm current drain 7 ma bypass mode (low gain) gain select> 1.6v gain -4.0 -3.0 -2.0 db note: bypass mode insertion loss will degrade gradually as v cc goes below 2.7v. input ip3 +20 +21 dbm current drain 2.8 3.0 ma current drain includes i cc +i ref gps low noise amplifier frequency 1575 mhz gain 17.5 db i cc =6.5ma, i cc +i ref =7.5ma noise figure 1.2 db input ip3 +7.0 dbm wimax low noise amplifier frequency 3100 3500 3800 mhz i cc =7ma gain 11.0 db noise figure 1.6 db input ip3 +10.0 dbm iip3 will improve if i cc is raised above 7ma. bypass mode (low gain) gain -3.0 -2.5 db input ip3 20.5 22.0 dbm 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 13 RF2374 ds101118 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. cdma low noise amplifier high gain mode frequency 869 894 mhz gain 19 db noise figure 1.0 db input ip3 +2.0 dbm iip3 will improve if i cc is raised above 7ma. current drain 7 ma low band lna high gain mode frequency 50 950 mhz gain 20 db 88mhz gain 19 db 870mhz noise figure 2.5 db 88mhz noise figure 1.5 db 870mhz input ip3 +2.0 dbm iip3 will improve if i cc is raised above 7ma. power supply voltage (v cc )3v gain select low level (high gain mode) 0.8 v high gain mode. gain select<0.8v, v ref =3v (typical) gain select high level (bypass mode) 1.6 v low gain mode. gain select> 1.6v, v ref : see bias note 2 gain select on/off time <150 nsec (c1 values range from 3 to 10pf), temp=-40c to +85c, and over process power down 0 5 again select<0.8v, v ref =0v, v cc =3.0v bias note: due to the presence of esd protection circuitry on the RF2374, the maximum allowable collector bias voltage (pin 6) is 4.0v. higher supply voltages such as 5v are permissible if a series resistor is used to drop v cc to < 4.0v for a given i cc . bias note 2: in bypass mode, v ref is essentially a ?don?t care? condition. pulling v ref low when in bypass mode does conserve the small 1ma to 2ma supplied by v ref .
4 of 13 RF2374 ds101118 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 pin function description interface schematic 1rf in rf input pin. this part is designed such that 50 is the optimal source impedance for best noise figure. best noise figure is achieved with only a series capacitor on the input. 2gnd1 ground connection. for best performance, keep traces physically short and connect immediately to ground plane. 3vref for low noise amplifier applications, this pin is used to control the bias cur- rent. an external resistor can be used to set the bias current for any v bias voltage. this device will have good gain and noise figure with i cc as low as 3ma. 4gain select this pin selects high gain and bypass modes. gain select< 0.8v, high gain. gain select> 1.6v, low gain. 5gnd2 see gnd1. 6rf out amplifier output pin. this pin is an open-collector output. it must be biased to v cc through a choke or matching inductor. 7nc not connected. 8nc not connected. pkg gnd gnd this pad should be connected to the ground plane by vias directly under the device. rf in rf out to bias circuit vref
5 of 13 RF2374 ds101118 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 wlan (2.4ghz to 2.5ghz) evaluation board schematic gps/pcs (1.5ghz to 2.2ghz) 1 2 3 4 6 5 8 7 c1 22 nf j1 rf in r1 1.8 k vref gain select l1 1.5 nh c2 dnp c3 1.0 pf j2 rf out c4 100 pf c5 10 nf vcc p1-1 vcc p1-4 vref p1-3 gain select gnd p1 1 2 3 4 con4 50 strip 50 strip 1 2 3 4 6 5 8 7 c1 22 nf j1 rf in r1 1.8 k vref gain select l1 3.3 nh c2 dnp c3 1.8 pf j2 rf out c4 100 pf c5 10 nf p1-1 vcc p1-4 vref p1-3 gain select gnd p1 1 2 3 4 con4 50 strip 50 strip vcc
6 of 13 RF2374 ds101118 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 - 869mhz to 894mhz tune application schematic for wide band tune wibro/wlan/wimax (2.3ghz to 3.8ghz) 1 2 3 4 6 5 8 7 c1 22 nf j1 rf in r1 1.8 k vref gain select l1 3.9 nh c2 3.9 pf c3 10 pf j2 rf out c4 100 pf c5 10 nf vcc p1-1 vcc p1-4 vref p1-3 gain select gnd p1 1 2 3 4 con4 50 strip 50 strip 100 only needed below 1500 mhz to lower gain, improve rl, and maintain stability. 1 2 3 4 6 5 8 7 c1 22 nf j1 rf in r1 1.8 k vref gain select l1 1.8 nh c2 dnp c3 2.0 pf j2 rf out c4 100 pf c5 10 nf vcc p1-1 vcc p1-4 vref p1-3 gain select gnd p1 1 2 3 4 con4 50 strip 50 strip
7 of 13 RF2374 ds101118 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 for low band tune evaluation board layout board size 0.835? x 0.900? board thickness 0.032?, board material fr-4 1 2 3 4 6 5 7 8 c3 100 pf j2 rfout vref r1 1.8 k j1 rf in c6 1000 pf c1 22 nf vcc c2 dnp l1 100 nh c5 10 nf r2 1.2 k p1 1 2 3 4 con4 vcc gain select vref c4 100 pf gain select c3 dnp
8 of 13 RF2374 ds101118 7628 thorndike road, greensboro, nc 27409-9421 for sales or technical support, contact rfmd at (+1) 336-678-5570 or sales-support@rfmd.com . gps band data gain @ gps band in high gain mode v cc =3.0v and v ref =3.0v over temp 14.0 15.0 16.0 17.0 18.0 19.0 20.0 21.0 22.0 23.0 1500.0 1520.0 1540.0 1560.0 1580.0 1600.0 frequency (mhz) gain (db) gain @ -40c gain @ 25c gain @ 85c gain @ gps band in bypass mode v cc =3.0v and v ref =3.0v over temp -5.0 -4.5 -4.0 -3.5 -3.0 -2.5 -2.0 -1.5 -1.0 -0.5 0.0 1500.0 1520.0 1540.0 1560.0 1580.0 1600.0 frequency (mhz) gain (db) gain @ -40c gain @ 25c gain @ 85c noise figure @ gps band in high gain mode v cc =3.0v and v ref =3.0v over temp 0.0 0.4 0.8 1.2 1.6 2.0 2.4 2.8 1500.0 1520.0 1540.0 1560.0 1580.0 1600.0 frequency (mhz) nf (db) nf @ -40c nf @ 25c nf @ 85c noise figure @ gps band in bypass mode v cc = 3.0v and v ref =3.0v over temp 0.0 1.0 2.0 3.0 4.0 5.0 6.0 7.0 8.0 1500.0 1520.0 1540.0 1560.0 1580.0 1600.0 frequency (mhz) nf (db) nf @ -40c nf @ 25c nf @ 85c
9 of 13 RF2374 ds101118 7628 thorndike road, greensboro, nc 27409-9421 for sales or technical support, contact rfmd at (+1) 336-678-5570 or sales-support@rfmd.com . iip3 @ gps band in bypass mode v cc =3.0v and v ref = 3.0v over temp 16.0 17.0 18.0 19.0 20.0 21.0 22.0 23.0 24.0 1500.0 1520.0 1540.0 1560.0 1580.0 1600.0 frequency (mhz) iip3 (dbm) iip3 @ -40c iip3 @ 25c iip3 @ 85c iip3 @ gps band in high gain mode v cc =3.0v and v ref =3.0v over temp 0.0 2.0 4.0 6.0 8.0 10.0 12.0 14.0 16.0 18.0 1500.0 1520.0 1540.0 1560.0 1580.0 1600.0 frequency (mhz) iip3 (dbm) iip3 @ -40c iip3 @ 25c iip3 @ 85c iip3 @ gps band in bypass mode v cc =3.0v and v ref = 3.0v over temp 16.0 17.0 18.0 19.0 20.0 21.0 22.0 23.0 24.0 1500.0 1520.0 1540.0 1560.0 1580.0 1600.0 frequency (mhz) iip3 (dbm) iip3 @ -40c iip3 @ 25c iip3 @ 85c
10 of 13 RF2374 ds101118 7628 thorndike road, greensboro, nc 27409-9421 for sales or technical support, contact rfmd at (+1) 336-678-5570 or sales-support@rfmd.com . wibro/wlan/wimax data gain @ wlan band in high gain mode v cc =3.0v and v ref =3.0v over temp 8.0 10.0 12.0 14.0 16.0 18.0 20.0 22.0 2300.0 2350.0 2400.0 2450.0 2500.0 2550.0 2600.0 2650.0 2700.0 frequency (mhz) gain (db) gain @ -40c gain @ 25c gain @ 85c gain @ wlan band in bypass mode v cc =3.0v and v ref =3.0v over temp -5.0 -4.0 -3.0 -2.0 -1.0 0.0 2300.0 2350.0 2400.0 2450.0 2500.0 2550.0 2600.0 2650.0 2700.0 frequency (mhz) gain (db) gain @ -40c gain @ 25c gain @ 85c noise figure @ wlan band in high gain mode v cc =3.0v and v ref =3.0v over temp 0.0 0.5 1.0 1.5 2.0 2.5 3.0 2300.0 2350.0 2400.0 2450.0 2500.0 2550.0 2600.0 2650.0 2700.0 frequency (mhz) nf (db) nf @ -40c nf @ 25c nf @ 85c iip3 @ wlan band in high gain mode v cc =3.0v and v ref =3.0v over temp 0.0 2.0 4.0 6.0 8.0 10.0 12.0 14.0 16.0 2300.0 2350.0 2400.0 2450.0 2500.0 2550.0 2600.0 2650.0 2700.0 frequency (mhz) iip3 (dbm) iip3 @ -40c iip3 @ 25c iip3 @ 85c iip3 @ wlan band in bypass mode v cc =3.0v and v ref =3.0v over temp 16.0 18.0 20.0 22.0 24.0 26.0 28.0 2300.0 2350.0 2400.0 2450.0 2500.0 2550.0 2600.0 2650.0 2700.0 frequency (mhz) iip3 (dbm) iip3 @ -40c iip3 @ 25c iip3 @ 85c i cc + i ref @ wlan band in high gain mode v cc =3.0v and v ref =3.0v over temp 5.0 5.5 6.0 6.5 7.0 7.5 8.0 8.5 9.0 2300.0 2350.0 2400.0 2450.0 2500.0 2550.0 2600.0 2650.0 2700.0 frequency (mhz) i cc + i ref (ma) icc + iref @ -40c icc + iref @ 25c icc + iref @ 85c
11 of 13 RF2374 ds101118 7628 thorndike road, greensboro, nc 27409-9421 for sales or technical support, contact rfmd at (+1) 336-678-5570 or sales-support@rfmd.com . wimax data gain @ wimax band in high gain mode v cc =3.0v and v ref =3.0v over temp 6.0 8.0 10.0 12.0 14.0 16.0 18.0 3100.0 3200.0 3300.0 3400.0 3500.0 3600.0 3700.0 3800.0 frequency (mhz) gain (db) gain @ -40c gain @ 25c gain @ 85c gain @ wimax band in bypass mode v cc =3.0v and v ref =3.0v over temp -5.0 -4.0 -3.0 -2.0 -1.0 0.0 3100.0 3200.0 3300.0 3400.0 3500.0 3600.0 3700.0 3800.0 frequency (mhz) gain (db) gain @ -40c gain @ 25c gain @ 85c noise figure @ wimax band in high gain mode v cc =3.0v and v ref =3.0v over temp 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 3100.0 3200.0 3300.0 3400.0 3500.0 3600.0 3700.0 3800.0 frequency (mhz) nf (db) nf @ -40c nf @ 25c nf @ 85c iip3 @ wimax band in high gain mode v cc =3.0v and v ref =3.0v over temp 4.0 6.0 8.0 10.0 12.0 14.0 16.0 18.0 3100.0 3200.0 3300.0 3400.0 3500.0 3600.0 3700.0 3800.0 frequency (mhz) iip3 (dbm) iip3 @ -40c iip3 @ 25c iip3 @ 85c iip3 @ wimax band in bypass mode v cc =3.0v and v ref =3.0v over temp 12.0 14.0 16.0 18.0 20.0 22.0 24.0 26.0 28.0 30.0 3100.0 3200.0 3300.0 3400.0 3500.0 3600.0 3700.0 3800.0 frequency (mhz) iip3 (dbm) iip3 @ -40c iip3 @ 25c iip3 @ 85c i cc + i ref @ wimax band in high gain mode v cc =3.0v and v ref =3.0v over temp 5.0 5.5 6.0 6.5 7.0 7.5 8.0 8.5 9.0 3100.0 3200.0 3300.0 3400.0 3500.0 3600.0 3700.0 3800.0 frequency (mhz) i cc + i ref (ma) icc + iref @ -40c icc + iref @ 25c icc + iref @ 85c
12 of 13 RF2374 ds101118 7628 thorndike road, greensboro, nc 27409-9421 for sales or technical support, contact rfmd at (+1) 336-678-5570 or sales-support@rfmd.com . cdma data gain 20.0 20.5 21.0 21.5 22.0 22.5 23.0 23.5 24.0 24.5 25.0 850 860 870 880 890 900 910 920 930 940 frequency (mhz) gain (db) vcc = 3 v vref = 3 v vcc = 3.6 v vref = 3 v vcc = 3.6 v vref = 3.6 v vcc = 5 v vref = 3 v vcc = 5 v vref = 3.6 v oip3 20 21 22 23 24 25 26 27 28 29 30 850 860 870 880 890 900 910 920 930 940 frequency (mhz) oip3 (dbm) vcc = 3 v vref = 3 v vcc = 3.6 v vref = 3 v vcc = 3.6 v vref = 3.6 v vcc = 5 v vref = 3 v vcc = 5 v vref = 3.6 v iip3 0 1 2 3 4 5 6 7 8 9 10 850 860 870 880 890 900 910 920 930 940 frequency (mhz) iip3 (dbm) vcc = 3 v vref = 3 v vcc = 3.6 v vref = 3 v vcc = 3.6 v vref = 3.6 v vcc = 5 v vref = 3 v vcc = 5 v vref = 3.6 v op1db 6.0 6.5 7.0 7.5 8.0 8.5 9.0 9.5 10.0 10.5 11.0 850 860 870 880 890 900 910 920 930 940 frequency (mhz) op1db (dbm) vcc = 3 v vref = 3 v vcc = 3.6 v vref = 3 v vcc = 3.6 v vref = 3.6 v vcc = 5 v vref = 3 v vcc = 5 v vref = 3.6 v ip1db -15.0 -14.5 -14.0 -13.5 -13.0 -12.5 -12.0 -11.5 -11.0 -10.5 -10.0 850 860 870 880 890 900 910 920 930 940 frequency (mhz) ip1db (dbm) vcc = 3 v vref = 3 v vcc = 3.6 v vref = 3 v vcc = 3.6 v vref = 3.6 v vcc = 5 v vref = 3 v vcc = 5 v vref = 3.6 v noise figure over frequency and voltage (v cc = 3v to 5v; v ref = 3v to 3.6v) 0.0 0.2 0.4 0.6 0.8 1.0 1.2 860 930 860 930 860 930 860 930 860 930 frequency noise figure (db)
13 of 13 RF2374 ds101118 7628 thorndike road, greensboro, nc 27409-9421 for sales or technical support, contact rfmd at (+1) 336-678-5570 or sales-support@rfmd.com . low band tune data

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