Analog Devices Inc. ADMV8432-EVALZ

Overview

ADMV8432-EVALZ from Analog Devices is an evaluation board for the ADMV8432 monolithic microwave integrated circuit (MMIC) tunable band-pass filter, supporting 15.1 GHz to 32 GHz passband operation with analog VTUNE and VCTL control. It enables rapid characterization of center frequency tuning (16.6–30.1 GHz), insertion loss (≤9 dB), ≥30 dB wideband rejection, and 200 ns amplitude settling in test and measurement or EW system development.

For engineers reviewing the ADMV8432-EVALZ datasheet, ADMV8432-EVALZ pinout, ADMV8432-EVALZ application, or ADMV8432-EVALZ equivalent, this board provides full RF interface access (RFIN/RFOUT), calibrated DC biasing (VDD = 5 V, VEE = −5 V), dual-band selection (VCTL = 0 V / 2.5 V), and on-board tuning voltage control (VTUNE = 0–15 V) for real-time filter reconfiguration in millimeter-wave systems.

Technical Context

The ADMV8432-EVALZ implements a complete reference design for the ADMV8432 MMIC filter, including matched 50 Ω RF input/output paths with blocking capacitors, precision low-noise power conditioning (VDD, VEE, VCTL, VTUNE), and thermal management via soldered exposed pad grounding. It supports both high-band (25.7–30.1 GHz) and low-band (16.6–22.5 GHz) operation through dedicated VCTL logic level selection.

Board-level signal integrity is maintained by separating RF, analog, and digital ground planes; incorporating decoupling networks (0.1 µF, 0.01 µF, 4.7 µF); and providing direct access to all critical pins-including RFIN, RFOUT, VTUNE, VCTL, VDD, VEE, and GND-via SMA connectors and test points aligned to the 40-lead LFCSP package footprint.

Key Specifications

Availability

ADMV8432-EVALZ is available at Aetrix Electronics and suitable for millimeter-wave test equipment, military electronic warfare (EW) subsystem validation, and satellite communications (VSAT) front-end prototyping requiring stable component supply and fast time-to-test capability.

Supply support for ADMV8432-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 digital signal processing (DSP) technologies, headquartered in Norwood, MA, serving aerospace, defense, communications, and industrial markets.

The ADMV8432-EVALZ belongs to Analog Devices' Microwave & RF Evaluation Platform product line, designed specifically to accelerate development of tunable filtering solutions in Ka-band and Q-band systems where size, weight, and dynamic reconfigurability are critical.

FAQ

What is the primary function of the ADMV8432-EVALZ?

The ADMV8432-EVALZ is an evaluation board that provides full hardware and layout support for characterizing the ADMV8432 tunable band-pass filter IC. It enables engineers to validate center frequency tuning (16.6–30.1 GHz), insertion loss, rejection performance, and dynamic response under real-world RF and bias conditions without custom PCB design.

Does ADMV8432-EVALZ support both high-band and low-band operation of the ADMV8432?

Yes, ADMV8432-EVALZ fully supports both operational bands of the ADMV8432: high-band (25.7–30.1 GHz) when VCTL = 0 V, and low-band (16.6–22.5 GHz) when VCTL = 2.5 V. The board provides dedicated test points and routing to ensure clean switching and minimal crosstalk between band-select control and RF paths.

What power supply requirements must be met to operate ADMV8432-EVALZ correctly?

ADMV8432-EVALZ requires three regulated supplies: +5 V (VDD), −5 V (VEE), and a logic-level VCTL (0 V or 2.5 V). Critically, the power-up sequence must follow GND → VDD → VEE → VCTL → VTUNE to prevent ESD structure damage. VTUNE is user-supplied (0–15 V) and must be externally sourced with ≤±1 µA load current.

How is RF interfacing implemented on the ADMV8432-EVALZ?

ADMV8432-EVALZ uses SMA connectors for RFIN and RFOUT, each dc-coupled and impedance-matched to 50 Ω. Because the ADMV8432 pins are dc-coupled, external blocking capacitors must be added in series with the RF lines if source/load dc potentials differ from 0 V-no internal blocking caps are present on the board.

Is thermal management addressed on the ADMV8432-EVALZ?

Yes, ADMV8432-EVALZ incorporates thermal best practices for the ADMV8432's 6 mm × 6 mm LFCSP package: the exposed paddle is soldered directly to a large, low-impedance ground plane on the board's bottom layer, and the layout separates heat-generating components while maintaining RF isolation per Analog Devices' recommended grounding scheme.