5

5 - 88

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Pin Number

Function

Description

Interface Schematic

1, 8

RF1, RF2

This pin is DC coupled and matched to 50 Ohm. Blocking

capacitors are required if RF line potential is not equal to 0V.

2, 7

GND

This pin must be DC grounded.

3, 6

V2, V1

Control Input (Master).

4

I

Control Input (Slave).

5

O

This pin must have an external 500 Ohm resistor to ground.

Pin Descriptions

Single-Line Control Driver

Note:

External op-amp control circuit maintains imped-

ance match while attenuation is varied. Input con-

trol ranges from 0 Volts (min. attenuation) to -2.5

Volts (max. attenuation.)

HMC346G8

v03.1008

GaAs MMIC HERMETIC SMT VOLTAGE-

VARIABLE ATTENUATOR, DC - 8 GHz