Analog Devices Inc. ADPA7002-EVALZ

Overview

ADPA7002-EVALZ from Analog Devices is an evaluation board designed to characterize and validate the ADPA7002 GaAs pHEMT MMIC power amplifier - a 18 GHz to 44 GHz, 28 dBm P1dB, 15 dB gain RF amplifier in a 6 mm × 6 mm ceramic LCC_HS package with integrated temperature-compensated power detector. It supports rapid prototyping for military EW, test instrumentation, and high-frequency communications systems.

For engineers reviewing the ADPA7002-EVALZ datasheet, ADPA7002-EVALZ layout, ADPA7002-EVALZ interface schematics, or ADPA7002-EVALZ biasing procedures, this board provides fully populated, impedance-matched RF paths, calibrated VDET/VREF measurement circuitry, and dual bias configuration options (north/south side) aligned with the ADPA7002's 16-pin EH-16-1 package.

Technical Context

The ADPA7002-EVALZ implements a complete RF evaluation platform for the ADPA7002 die, featuring 50 Ω matched RFIN and RFOUT traces with SMA connectors, on-board decoupling networks for all VDD and VGG1 pins, and dedicated interface circuits for the integrated VDET/VREF power detection system. It supports both constant gate voltage and constant drain current (via HMC980LP4E) biasing methods.

Board-level design incorporates thermal management via the ADPA7002's exposed paddle soldered to a large internal ground plane, and includes test points for all 16 pins plus VDET–VREF differential output. The PCB layout follows Analog Devices' recommended RF grounding, bypassing, and hybrid-coupled architecture per the ADPA7002's three-stage quadrature amplifier topology.

Key Specifications

Availability

ADPA7002-EVALZ is available at Aetrix Electronics and suitable for military electronic warfare subsystems, automated RF test instrumentation calibration, and millimeter-wave 5G/6G prototype development requiring stable component supply and validated reference designs.

Supply support for ADPA7002-EVALZ includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Analog Devices, Inc. is a global leader in high-performance analog, mixed-signal, and RF ICs, serving precision instrumentation, communications, aerospace, and defense markets since 1965.

The ADPA7002-EVALZ belongs to Analog Devices' RF/Microwave Evaluation Platform product line, engineered to accelerate time-to-test for GaAs and GaN MMIC amplifiers operating above 18 GHz with integrated bias control and power monitoring.

FAQ

What is the primary function of the ADPA7002-EVALZ?

The ADPA7002-EVALZ is a fully assembled evaluation PCB designed exclusively to enable functional validation, RF performance characterization, and bias optimization of the ADPA7002 GaAs pHEMT power amplifier. It provides direct access to all 16 pins, calibrated RF input/output paths, and complete support for the integrated VDET/VREF power detection system - eliminating custom PCB development for initial testing.

Does the ADPA7002-EVALZ support both bias configurations described in the ADPA7002 datasheet?

Yes, the ADPA7002-EVALZ implements both Bias Option 1 (using pins 9, 10, 11) and Bias Option 2 (using pins 1, 2, 3) as defined in the ADPA7002 datasheet Rev. A. Jumpers and separate test point banks allow users to select either configuration without solder modification, ensuring compatibility with both north- and south-side bias routing strategies.

Can the ADPA7002-EVALZ be used with the HMC980LP4E active bias controller?

Yes, the ADPA7002-EVALZ includes dedicated footprint and routing for the HMC980LP4E active bias controller, including connections for VDIG, EN, VNEG, VGATE, and VDRAIN. Its schematic and layout follow Analog Devices' AN-1363 guidelines, enabling constant-current biasing with thermal stability and safe sequencing for the ADPA7002.

What RF frequency range is validated on the ADPA7002-EVALZ?

The ADPA7002-EVALZ is validated across the full operational bandwidth of the ADPA7002: 18 GHz to 44 GHz. Its microstrip traces, SMA connectors, and grounding architecture maintain <15 dB return loss and <0.9 dB gain flatness variation over this range when used with proper RF test equipment and calibration standards.

How is thermal performance managed on the ADPA7002-EVALZ?

The ADPA7002-EVALZ thermally optimizes the ADPA7002 by soldering its exposed paddle directly to a solid internal ground plane with >20 thermal vias, matching the 14.5 °C/W θJC specification. The board also includes a thermal relief pad and optional heatsink mounting holes, enabling sustained operation at 700 mA IDQ and 5 V VDD without exceeding the ADPA7002's 135.75°C nominal junction temperature.