CHA3024-QGG_15 Datasheet, PDF (13/16 Pages) United Monolithic Semiconductors – 2-22GHz LNA with AGC

2-22GHz LNA with AGC
CHA3024-QGG
Device Operation
Device Power Up instructions:
1) Ground the device.
2) Set Vg1 to -1.5V.
3) Set Vd to 5V (nominal value for Vd).
4) Set Vg2 to 1.7V (nominal value for Vg2).
5) Set Vg1 in the range of -0.3V for having Idq=100mA.
6) Apply RF input power and adjust Vg2 to obtain desired gain.
Device Power Down instructions:
1) Set Vg2 to 1.7V.
2) Turn RF power supply off.
3) Set Vg1 to -1.5V in order to get Idq=0mA.
4) Set Vg2 to 0V.
5) Set Vd to 0V.
6) Set Vg1 to 0V.
DC Schematic
Vd=5V, Vg1=-0.3V, Vg2=1.7V, Idq=100mA
Vd
RF out
Vg2
150 ohms
RF in
Cell 1
Cell n
Vg1
50 ohms
300 ohms
Ref. : DSCHA3024-QGG-4346 - 12 Dec 14
13/16
Specifications subject to change without notice
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