preliminary data sheet AS3801 rev. c 1 / 7 nov. 98 cdma/fm transmit agc amplifier AS3801 key features r supports dual mode operation. r -45db to +40db gain control guaranteed. r high oip3 of 15dbm @ max. gain @ -51dbm input power. r single 3.6v supply. r temperature and supply stabilized. r power down feature. r 100mhz to 300mhz operation. r silicon bicmos process. r miniature surface mount 16 pin, 150 mil ssop package. compatibility the AS3801 is designed to be functionally or/and pin compatible to the following products: r rf9909 (rf micro devices), pin compat. r q5505 (qualcomm), pin compat. r cxa3002n (sony) general description the AS3801 is a gain controlled amplifier designed for the transmit section of dual mode cdma/fdm, tdma/fdm or fm/fdm cellular phones. key specifications like gain range, noise figure, ip3, temperature range and other specifications are designed to be in line with the is-95 standard for cdma cellular communications. the circuit is designed for narrow band if applications but can also be used in wideband applications. applications r digital cellular systems with transmission methods: cdma/fdm, tdma/fdm, fm/fdm and tdma/tdd. r examples: is-95 cdma, is-54 damps, amps, pwt. r cordless phones analog / digital. r general purpose linear if amp?s. r wll / wlan. ssop-16 cdma+ cdma- gnd gnd gnd gnd gnd pwd out- out+ gnd gnd vcc vcc vcc vctrl 1 2 3 4 5 6 7 8 16 15 14 13 12 11 10 9 AS3801 this document contains information on products under development. austria mikro systeme intl. ag reserves the right to change or discontinue this product without notice . austria mikro systeme international ag
preliminary data sheet AS3801 rev. c 2 / 7 nov. 98 absolut maximum ratings (non operating) symbol parameter min max unit note vdd positive supply voltage -0.5 7 v gnd analog ground 0 0 v vin voltage at every input pin gnd-0.5 vdd+0.5 v iin input current (into any pin except supply pins and except low leakage pin) -40 40 ma iin_15 input current into low leakage pin -25 25 ma h humidity noncondensing 1) esd electrostatic discharge 1000 v 2) tstg storage temperature -55 125 deg c tlead lead temperature 260 deg c 3) notes: 1) defined din 40040 cond. f. 2) hbm: r=1.5kohm, c=100pf. open collector outputs have less esd protection because the protection diode to the positive supply cannot be implemented (the output swing is higher than vpos.+0.7v). 3) 260 deg c for 10 sec (reflow and wave soldering), 360 deg c for 3 sec (manual soldering). the above figures conform to cmos standard for low leakage application. recommended operating conditions symbol parameter min typ max unit note vdd positive supply voltage 3.6 v 1) gnd analog ground 0 0 0 v idd supply current 18 21 ma 2) tamb ambient temperature range, operating range -30 +80 deg c notes: 1) 3.6v 5%. 2) measured at pin vdd, see test schematic, no signal.
preliminary data sheet AS3801 rev. c 3 / 7 nov. 98 tx agc electrical characteristics parameter min typ max unit note frequency range 100-300 mhz f -3db =300mhz maximum gain 40 db v g =3v minimum gain -45 db v g =0.2v noise figure 6.8 db max. gain output ip3 15 dbm max. gain 1) gain variation (in +/-630 khz bandwidth, centered at 130mhz) +/-0.05 db gain slope linearity (over any 6db segment) +/- 3 db -32 to +72 deg.c gain control voltage range 0.2-3 v 0.2v min. gain 3.0v max. gain ref. to gnd gain control input impedance 16 k w current consumption 18 20 ma input resistance 1k diff. w output impedance 1k diff. w open collector 1k w diff. outside (500 w eff.) power down mode 2) notes: specifications refered to 130mhz. 1) two tone measurement is used. f 1 =131mhz; f 2 =132mhz; input power is -51dbm. 2) high o active, low o power save, input impedance 3 16k w .
preliminary data sheet AS3801 rev. c 4 / 7 nov. 98 pin description pin# symbol function 1 cdma+ cdma positive differential input 2 cdma- cdma negative differential input 3 gnd analog ground 4 gnd analog ground 5 gnd analog ground 6 gnd analog ground 7 gnd analog ground 8 pwd power down, cmos input v pwd-rx >=3.4v, rx-agc active v pwd-rx <=0.5v, rx-agc off 9 out- analog differential output 10 out+ analog differential output 11 gnd analog ground 12 gnd analog ground 13 vcc vcc power supply 14 vcc vcc power supply 15 vcc vcc power supply 16 vctrl analog control input vctrl=0.2v, low gain rail; vctrl=3v, high gain rail definition of cdma source impedance, z s , and AS3801 input impedance z in if signal source cdma+ zs=1k w zin=1k w ( typ) vp vn cdma- definition of load impedance, z l , and AS3801 output impedance z o tx-cdma z l measurement reference plane out+ output port out- vcc l2 r b l1 z 0 zl eff tx-cdma output port impedance z o >10k w load impedance z l =1k w bias resistor r=1k w bias inductors l 1 =l 2 =choke, w .l>>r b effective load z leff =500 w
preliminary data sheet AS3801 rev. c 2 / 7 nov. 98 transfer characteristic -80,00 -60,00 -40,00 -20,00 0,00 20,00 40,00 60,00 0 0,5 1 1,5 2 2,5 3 3,5 vcntrl [v] gain [db] gain, tx 25 degc tx, spec gaintx, -32degc gain tx, 72 degc intermodulation performance iip3, tx agc, 130 mhz, vdd= 3.6v, pin = -51 dbm -40 -30 -20 -10 0 10 20 0 5 10 15 20 25 30 35 40 45 50 gain [db] oip3, iip3 [dbm] -140 -120 -100 -80 -60 -40 -20 pim [dbm] oip3 iip3 pim
preliminary data sheet AS3801 rev. c 3 / 7 nov. 98 compression behaviour 24 25 26 27 28 29 30 -90 -80 -70 -60 -50 -40 -30 -20 -10 0 pin [dbm] gain [db] -60 -50 -40 -30 -20 -10 0 pout [dbm] gain, tx pout, tx -1 db
preliminary data sheet AS3801 rev. c 4 / 7 nov. 98 typical application @ 130mhz the information furnished herein by austria mikro systeme international is substantially correct and accurate. however, austria mikro systeme international shall not be liable to licensee or any third party for any damages, including but not limited to personal injury, property damage, loss of profits, loss of use, interrupt of business or indirect, special incidental or consequential damages, of any kind, in connection with or arising out of the furnishing, performance or use of the technical data. no obligation or liability to licensee or any third party shall arise or flow out of austria mikro systeme international?s rendering of technical or other services. austria mikro systeme international makes no warranty, express, statutory, implied, or by description regarding the information set forth herein or regarding the freedom of the described devices from patent infringement. austria mikro systeme international reserves the right to change specifications and prices at any time and without notice. therefore, prior to designing this product into a system, it is necessary to check with austria mikro systeme international for current information. this product is intended for use in normal commercial applications. applications requiring extended temperature range, unusual environmental requirements, or high reliability applications, such as military, medical life- support or life-sustaining equipment are specifically not recommended without additional processing by austria mikro systeme international for each application. copyright @ 1998, austria mikro systeme international ag, schlo? premst?tten, 8141 unterpremst?tten, austria. all rights reserved. the material herein may not be reproduced, adapted, merged, translated, stored, or used without the prior written consent of the copyright owner.
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