2 GHz to 6 GHz, 25 W

Power Amplifier Module

Data Sheet

HMC7748

Rev. 0

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FEATURES

58 dB typical small signal gain

43 dBm typical saturated output power

48 dBm typical output IP3

6 dB maximum noise figure

Operates from 12 V and 28 V supplies

Built-in bias sequencing

Enable pin to provide shutdown capability

APPLICATIONS

Telecom infrastructure

Test instrumentation

Military

FUNCTIONAL BLOCK DIAGRAM

REGULATION

AND

BIAS SEQUENCING

BIAS

SEQUENCING

28V

12V

EN

RF IN

RF OUT

GND

HMC7748

Figure 1.

GENERAL DESCRIPTION

The HMC7748 is a multistage power amplifier (PA) that

provides 25 W of saturated output power across the band of

2 GHz to 6 GHz. It draws 0.7 A from a 12 V supply and up to

4 A from a 28 V supply. Input signals of as much as −8 dBm are

acceptable, and the module has small signal gain of 60 dB.

The 12 V supply is regulated internally and generates the

negative voltage required for the gate bias. Built-in bias sequencing

prevents the drain voltages for the amplifier stages from being

applied without the negative voltage present, which protects the

amplifiers if 28 V is applied without 12 V supply applied.

An external enable pin causes the module to remain in shutdown

mode unless the pin is pulled to ground. This pin provides a

means of turning the amplifiers off and on without cycling the

power supplies.