Data Sheet

ADPA1120

4.5W (36.5dBm), 8GHz to 12GHz, GaN Power Amplifier

Rev. 0

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FEATURES

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Internally matched and AC-coupled, 4.5W, GaN power amplifier

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Integrated temperature-compensated RF power detector

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POUT: 36.5dBm typical with PIN = 1dBm from 9.5GHz to 11.5GHz

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Small signal gain: 38.5dB typical from 9.5GHz to 11.5GHz

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Power gain: 35.5dB typical with PIN = 1dBm from 9.5GHz to

11.5GHz

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PAE: 47% typical with PIN = 1dBm from 9.5GHz to 11.5GHz

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Supply voltage: 20V at 50mA on 10% duty cycle

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32-lead, 5mm × 5mm, LFCSP

APPLICATIONS

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Weather radars

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Marine radars

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Military radars

GENERAL DESCRIPTION

The ADPA1120 is a 8GHz to 12GHz power amplifier with a satu-

rated output power (POUT) of 36.5dBm, power added efficiency

(PAE) of 47%, and a power gain of 35.5dB typical from 9.5GHz to

11.5GHz at an input power (PIN) of 1dBm. The RF input and RF

output are internally matched and AC-coupled. A drain bias voltage

of 20V is applied to the VDD1-2, VDD3, and VDD4 pins. The drain

current is set by applying a negative voltage to the VGG1-2 pin.

The ADPA1120 is fabricated on a gallium nitride (GaN) process, is

housed in a 32-lead, 5mm × 5mm lead frame chip scale package

[LFCSP] and is specified for operation from −40°C to +85°C

FUNCTIONAL BLOCK DIAGRAM

Figure 1. Functional Block Diagram