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11 - 18

Pin Descriptions

Pin Number

Function

Description

Interface Schematic

1Vpd

Power Control Pin. For maximum power, this pin should be

connected to 5V. A higher voltage is not recommended. For

lower idle current, this voltage can be reduced.

2, 4, 7

GND

Ground: Backside of package has exposed metal ground

slug that must be connected to ground thru a short path.

Vias under the device are required.

3RFIN

This pin is AC coupled

and matched to 50 Ohms.

5, 6

RFOUT

RF output and bias for the output stage. The power supply

for the output device needs to be supplied to these pins.

8Vcc

Power supply voltage for the first amplifier stage. An

external bypass capacitor of 330 pF is required. This

capacitor should be placed as close to the devices as

possible.

Application Circuit

Note 1: C3 should be located < 0.020” from Pin 8 (Vcc)

Note 2: C2 should be located < 0.020” from L1.

TL1

TL2

TL3

Impedance

50 Ohm

50 Ohm

50 Ohm

Length

0.038”

0.231”

0.1”

HMC406MS8G / 406MS8GE

v05.1209

GaAs InGaP HBT MMIC

POWER AMPLIFIER, 5 - 6 GHz