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Q68000-A8883 Datasheet(PDF) 2 Page - Siemens Semiconductor Group |
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Q68000-A8883 Datasheet(HTML) 2 Page - Siemens Semiconductor Group |
2 / 14 page GaAs MMIC CGY 181 ________________________________________________________________________________________________________ Siemens Aktiengesellschaft pg. 2/14 01.02.96 HL EH PD 21 Functional block diagramm: Short description of CGY181 operation: A negative voltage between -4V to -6V (stabilization not necessary) has to be connected to the VG-pin, a positive supply voltage has to be applied to the VD-pins. The VTR-pin has to switched to 0V (GND) during transmit operation. The MMIC CGY181 is self-biased, the operating current is adjusted by the internal control circuit. In receive mode the VTR-pin is not connected (shut off mode). Pin # Configuration 1 VG Negative voltage at control circuit (-4V...-8V) 2 VTR Control voltage for transmit mode (0V) or receive mode (open) 3,4,5,10 GND 2 RF and DC ground of the 2nd stage 6,9 GND 1 RF and DC ground of the 1st stage 7 VD1 Positive drain voltage of the 1st stage 8 RFin RF input power 11 VD2,RFout Positive drain voltage of the 2nd stage, RF output power 12 - not connected DC characteristics Characteristics Symbol Conditions min typ max Unit Drain current stage 1 IDSS1 VD=3V, VG=0V, VTR n.c. 0.6 0.9 1.2 A stage 2 IDSS2 2.4 3.5 4.8 A Drain current with active current control ID VD=3V, VG=-4V, VTR=0V 1.0 A Transconductance gfs1 VD=3V, ID=350mA 0.28 0.32 - S (stage 1 and 2) gfs2 VD=3V, ID=700mA 1.1 1.3 - S Pinch off voltage Vp VD=3V, ID<500 µA (all stages) -3.8 -2.8 -1.8 V Pin (8) Pout (11) GND1 (6,9) GND2 VD1 (7) VD2 (11) VG (1) Control Circuit VTR (2) (3, 4, 5, 10) |
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