features integral t/r switch high output power high linearity vco high reproducibility mmic technology low cost available in die form or surface mount ceramic package description the p35-4800 gallium arsenide monolithic microwave integrated circuit operates at x-band and is designed to provide low cost transmit functions in search and rescue transponders (sarts) as part of the global maritime distress and safety system (gmdss). the high reproducibility of the mmic means no post assembly alignment is required. the output power of the mmic has been designed to meet minimum eirp specifications with low gain antenna and no post amplification. the die is fabricated using moc's f20 gallium arsenide mesfet mmic process. it is fully protected using silicon nitride passivation for excellent performance and reliability. electrical performance ambient temperature = 22 3c , z o = 50 w mmic for sart applications p35-4800-1 marconi optical components parameter conditions min typ max units frequency range 9.17 - 9.56 ghz output power 25.0 26.0 - dbm output power variation - - 2.0 db pulling figure 14db return loss - - 25 mhz phase noise @100khz offset - -65.0 - dbc/hz tuning voltage +vdc @ low frequency 0.20 - - v tuning voltage +vdc @ high frequency - - 4.0 v drain voltage vd - +6.1 - v tuning profile (linearity) - - 20 mhz max tuning sensitivity - 300 - mhz/v tuning speed 2000 - - mhz/ms current consumption - - 500 ma negative bias voltage1 -2.5 - -1 v negative current consumption - - 2 ma insertion loss antenna to receiver port - - 2.7 db isolation antenna to receiver port 20 - - db tx to rx switching time 50% control to 90% rf - - 500 ns rx to tx switching time 50% control to 90% rf - - 50 ns logic level 1 -0.2 - +0.2 v logic level 0 -6.5 - -8.0 v control current - - 200 ma
the data and product specifications are subject to change without notice. these devices should not be used for device qualification and production without prior notice. ? marconi optical components ltd 2001 www.moc.marconi.com moc, caswell, towcester, northants, nn12 8eq, tel:+44 1327 356468 fax +44 1327 356698 463/sm/00044/200 issue 1/1 ordering information: P25-4800-1 ceramic package typical performance at 22c package details absolute maximum ratings package outline pad function 1 gnd 2 -vg negative bias 3 gnd 4 +vd 5 gnd 6 gnd 7 vt tuning voltage 8 gnd 9 rx 10 gnd 11 gnd 12 c2 control 2 13 gnd 14 c1 control 1 15 gnd 16 gnd 17 antenna port 18 gnd 19 +vd 20 gnd max supply voltage +8.0v max control voltage - 8.0v chip operating temperature -20c to +55c package operating temperature -20c to +55c storage temperature -65c to +150c control logic function c1 c2 receive 1 0 transmit 0 1
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