Test Procedure for Biasing and Operation
CAUTION: LOSS OF GATE VOLTAGES (VG1, VG2)
WHILE CORRESPONDING DRAIN VOLTAGE (Vd) IS
PRESENT CAN DAMAGE THE AMPLIFIER.
The following sequence of steps must be followed to
properly test the amplifier.
Step 3: Slowly apply positive drain bias supply voltage of
+4V to Vd.
Step 4: After the bias condition is established, RF input
signal may now be applied at the appropriate frequency
band.
Step 1: Turn off RF input power.
Step 2: Connect the DC supply grounds to the grounds of
the chip carrier.
Step 5: Follow turn-off sequence of:
(i) Turn off RF input power.
(ii) Turn down and off drain voltage (Vd).
©2004 Fairchild Semiconductor Corporation
RMWL05001 Rev. B