CHA4220-QGG_15 Datasheet, PDF (13/16 Pages) United Monolithic Semiconductors – 0.5-20GHz Driver

0.5-20GHz Driver
CHA4220-QGG
Device Operation
Device Power Up instructions:
1) Ground the device.
2) Set Vg1 to -1.5V.
3) Set Vd to 6.5V (nominal value for Vd).
4) Set Vg2 to 1.5V (nominal value for Vg2).
5) Set Vg1 in the range of -0.3V for having Idq=120mA.
6) Apply RF input power and adjust Vg2 to obtain desired gain.
Device Power Down instructions:
1) Turn RF power supply off.
2) Set Vg1 to -1.5V in order to get Idq=0mA.
3) Set Vg2 to 0V.
4) Set Vd to 0V.
5) Set Vg1 to 0V.
DC Schematic
Vd=6.5V, Vg1=-0.3V, Vg2=1.5V, Idq=120mA
Ref. : DSCHA4220-QGG-5070 - 11 Mar 15
13/16
Specifications subject to change without notice
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