RMPA39200 View Datasheet(PDF) - Raytheon Company

Part Name

Description

Manufacturer

RMPA39200

37-40 GHz 1.6 Watt Power Amplifier MMIC

Raytheon Company 

RMPA39200

37-40 GHz 1.6 Watt Power Amplifier MMIC

Recommended

Procedure

for Biasing and

Operation

PRODUCT INFORMATION

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 -1.5 V to Vg.

Step 3: Slowly apply positive drain bias supply voltage

of +5 V to Vd.

Step 4: Adjust gate bias voltage to set the quiescent

current of Idq=1600 mA.

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).

Note:

An example auto bias sequencing circuit to apply negative gate voltage and positive drain voltage for the above procedure is shown below.

www.raytheonrf.com

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

Revised January 25, 2002

Page 4

Raytheon RF Components

362 Lowell Street

Andover, MA 01810

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