RMWP38001 Просмотр технического описания (PDF) - Fairchild Semiconductor
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RMWP38001 Datasheet PDF : 8 Pages
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Recommended Procedure for Biasing and Operation
CAUTION: LOSS OF GATE VOLTAGE (Vg) WHILE
DRAIN VOLTAGE (Vd) IS PRESENT MAY DAMAGE THE
AMPLIFIER CHIP.
The following sequence of steps must be followed to
properly test the amplifier:
Step 1: Turn off RF input power.
Step 2: Connect the DC supply grounds to the ground of
the chip carrier. Slowly apply negative gate bias supply
voltage of -1.5V to Vg.
Step 3: Slowly apply positive drain bias supply voltage of
+4V to Vd.
Step 4: Adjust gate bias voltage to set the quiescent
current of Idq = 250mA.
Step 5: After the bias condition is established, the RF input
signal may now be applied at the appropriate frequency
band.
Step 6: Follow turn-off sequence of:
(i) Turn off RF input power,
(ii) Turn down and off drain voltage (Vd),
(iii) Turn down and off gate bias voltage (Vg).
©2004 Fairchild Semiconductor Corporation
RMWP38001 Rev. C
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