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8

8 - 411

Pin Number

Function

Description

Interface Schematic

1, 6

RFIN1, 2

This pin is DC coupled an off chip

DC blocking capacitor is required.

2, 5, 7, 12, 14,

17, 19, 24

GND

Package bottom must be connected to RF/DC ground.

3, 4, 9, 10,

21, 22

N/C

No connection required. These pins may be connected to RF/

DC ground without affecting performance.

23, 20, 8, 11

Vdd1, 2, 3, 4

Power supply voltage for each amplifier. Choke inductor and

bypass capacitors are required. See application circuit.

18, 13

RFOUT1, 2

This pin is matched to 50 Ohms.

16, 15

RES1, 2

These pins are used to set the DC current Idd2 and Idd4

in each amplifier via an external biasing resistor.

See application circuit.

Pin Descriptions

HMC818LP4E

v01.0809

GaAs SMT PHEMT DUAL CHANNEL

LOW NOISE AMPLIFIER, 1.7 - 2.2 GHz