Analog Devices Inc. EV1HMC470ALP3

Overview

EV1HMC470ALP3 from Analog Devices is an evaluation board for the HMC470A 5-bit GaAs digital attenuator, supporting 0.1–3 GHz RF operation with 1 dB LSB resolution, 31 dB attenuation range, and LFCSP-16 package interface. It enables characterization of insertion loss (1.7 dB typ. @ 3 GHz), attenuation accuracy (±0.2 dB step error), and high linearity (P0.1dB = 27 dBm @ 5 V) in microwave radios, cellular infrastructure, and test equipment.

For engineers reviewing the EV1HMC470ALP3 datasheet, EV1HMC470ALP3 pinout, EV1HMC470ALP3 application, or EV1HMC470ALP3 equivalent, this page provides verified board-level specifications, thermal layout guidance, SMA RF interface details, decoupling capacitor placement, and ACGx grounding configuration for accurate HMC470A validation under real-world bias and signal conditions.

Technical Context

The EV1HMC470ALP3 is a 4-layer evaluation board optimized for high-frequency performance using Rogers RO4350 top dielectric (10 mil) and FR-4 core layers (62 mil total thickness). It implements coplanar waveguide (CPWG) transmission lines-16 mil trace width, 13 mil ground spacing-for precise 50 Ω impedance matching at RF1 and RF2 ports.

Board-level design includes dedicated 330 pF ac-coupling capacitors on both RF paths, six 330 pF capacitors connected to ACG1–ACG6 pins for sub-700 MHz operation, a 1 nF VDD decoupling capacitor, and dense via arrays beneath the exposed pad and RF traces to ensure low-impedance RF/thermal grounding per JEDEC JESD51 standards.

Key Specifications

Availability

EV1HMC470ALP3 is available at Aetrix Electronics and suitable for microwave radio development, 5G base station prototyping, and RF test equipment calibration requiring stable component supply, repeatable measurement setups, and RoHS-compliant evaluation hardware.

Supply support for EV1HMC470ALP3 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, and aerospace markets since 1965.

The EV1HMC470ALP3 belongs to Analog Devices' Hittite Microwave product line, engineered specifically to accelerate validation of GaAs-based RF components-including digital attenuators, switches, and amplifiers-in demanding wireless infrastructure and defense applications.

FAQ

What is the purpose of the EV1HMC470ALP3 evaluation board?

The EV1HMC470ALP3 evaluation board is designed exclusively to characterize and validate the HMC470A 5-bit GaAs digital attenuator. It provides calibrated RF paths, proper biasing, and grounded ACGx interfaces to measure key parameters-including insertion loss, state error, P0.1dB, and IP3-across its full 0.1–3 GHz frequency range. The board enables rapid integration into lab test benches without custom PCB development.

Does the EV1HMC470ALP3 support operation below 700 MHz?

Yes, the EV1HMC470ALP3 supports operation down to 0.1 GHz by incorporating 330 pF capacitors on all six ACGx pins (ACG1–ACG6), as specified in the HMC470A datasheet for sub-700 MHz use. These external capacitors replace internal floating capacitance to maintain attenuation accuracy and phase stability at lower frequencies where on-chip capacitance is insufficient.

How is RF impedance matched on the EV1HMC470ALP3?

The EV1HMC470ALP3 uses coplanar waveguide (CPWG) transmission lines with precisely calculated geometry: 16 mil trace width and 13 mil ground spacing on a 10 mil Rogers RO4350 top layer. This achieves a measured 50 Ω characteristic impedance across 0.1–3 GHz, minimizing reflections at RF1 and RF2 ports and ensuring accurate S-parameter extraction during VNA calibration.

What power supply requirements does the EV1HMC470ALP3 have?

The EV1HMC470ALP3 requires a single 3 V to 5 V dc supply applied to the VDD header (J3), with a 1 nF decoupling capacitor (C1) integrated on-board to filter high-frequency noise. No additional voltage regulation or sequencing circuitry is needed-the board follows the HMC470A's recommended power-up sequence and supports direct connection to standard lab power supplies.

Can the EV1HMC470ALP3 be used for production-level testing?

The EV1HMC470ALP3 is qualified for engineering validation and pre-compliance testing-not for high-volume production. Its 4-layer stack-up, manual SMA soldering, and non-automated assembly make it ideal for benchtop characterization, but not for automated test fixtures. For production, users should extract validated layout practices (e.g., CPWG dimensions, via placement, ACG grounding) into their own controlled PCB designs.