RMWD38001 Просмотр технического описания (PDF) - Fairchild Semiconductor

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RMWD38001

37-40 GHz Driver Amplifier MMIC

Fairchild Semiconductor 

RMWD38001

37-40 GHz Driver Amplifier MMIC

PRODUCT INFORMATION

Recommended

Procedure

for Biasing and

Operation

CAUTION: LOSS OF GATE VOLTAGES (Vg) WHILE DRAIN VOLTAGES (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 grounds

of the chip carrier. Slowly apply negative gate

bias supply voltage of -1.5 V to Vgs.

Step 3: Slowly apply positive drain bias supply

voltages of +4 V to Vd.

Step 4: Adjust gate bias voltage to set the quiescent

current of Idq=105 mA.

Step 5: After the bias condition is established, 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 voltage (Vg).

Characteristic performance data and specifications are subject to change without notice.

Revised March 14, 2001

Page 4

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