Analog Devices Inc. EV1HMC641ALP4

Overview

EV1HMC641ALP4 from Analog Devices is a 4-layer evaluation board designed to characterize the HMC641ALP4E GaAs nonreflective SP4T RF switch. It supports full broadband operation from 0.1 GHz to 20 GHz, features coplanar waveguide (CPWG) 50 Ω transmission lines (16 mil trace / 13 mil ground clearance), and integrates SMA launchers (J1–J5) for RFC, RF1–RF4 ports with calibrated through-line (J10–J11) for PCB loss de-embedding.

For engineers reviewing the EV1HMC641ALP4 datasheet, EV1HMC641ALP4 pinout, EV1HMC641ALP4 application, or EV1HMC641ALP4 equivalent, this board enables rapid validation of high-frequency switching performance-including insertion loss (≤3.2 dB at 12 GHz), isolation (≥40 dB at 20 GHz), P1dB (24 dBm), and IP3 (41 dBm)-under real-world thermal and RF grounding conditions using −3 V or −5 V negative supply control.

Technical Context

The EV1HMC641ALP4 implements a dedicated test platform for the HMC641ALP4E SP4T switch in its native 4 mm × 4 mm LFCSP package (HCP-24-3). Its stack-up uses Rogers RO4350 top dielectric (10 mil) over three 0.5 oz copper layers, with solid inner/bottom ground planes ensuring stable 50 Ω impedance and low RF return loss across 0.1–20 GHz.

All RF paths-RFC, RF1, RF2, RF3, RF4-are routed on the top layer via CPWG geometry and terminate directly to edge-mount SMA connectors. The board includes dedicated test points (J6–J9) for CTRLA, CTRLB, VSS, and GND, plus a 1000 pF bypass capacitor (C1) on the VSS supply line to suppress high-frequency noise during switching characterization.

Key Specifications

Availability

EV1HMC641ALP4 is available at Aetrix Electronics and suitable for microwave radio development, VSAT terminal prototyping, and military ECM subsystem testing requiring stable component supply, repeatable RF evaluation, and production-ready layout validation.

Supply support for EV1HMC641ALP4 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 EV1HMC641ALP4 belongs to Analog Devices' evaluation board portfolio for GaAs RF switches, specifically engineered to accelerate design-in and performance verification of broadband SP4T switches like the HMC641ALP4E in demanding microwave systems.

FAQ

What is the primary purpose of the EV1HMC641ALP4 evaluation board?

The EV1HMC641ALP4 evaluation board is a dedicated test platform for the HMC641ALP4E GaAs SP4T RF switch. It enables engineers to measure real-world RF performance-including insertion loss, isolation, return loss, and linearity-across 0.1 GHz to 20 GHz using calibrated SMA interfaces, proper thermal grounding, and controlled biasing. The EV1HMC641ALP4 provides traceable, repeatable data without requiring custom PCB development.

Does the EV1HMC641ALP4 support both −3 V and −5 V supply configurations for the HMC641ALP4E?

Yes, the EV1HMC641ALP4 supports both −3 V and −5 V negative supply voltages for the HMC641ALP4E device. The VSS test point (J8) accepts either voltage level, and the onboard 1000 pF bypass capacitor (C1) ensures stable decoupling across both operating conditions. Performance metrics such as P1dB (24 dBm typical at −5 V) and IP3 (41 dBm) are validated on this board per the HMC641ALP4E datasheet Rev. B specifications.

How is RF calibration handled on the EV1HMC641ALP4 board?

The EV1HMC641ALP4 includes a dedicated through calibration line connecting unpopulated SMA launchers J10 and J11. This 50 Ω transmission line matches the physical length and geometry of the active RF paths (RFC–RF1 to RFC–RF4), allowing users to de-embed PCB insertion loss and isolate the intrinsic performance of the HMC641ALP4E switch during vector network analyzer measurements.

What grounding strategy does the EV1HMC641ALP4 use to maintain signal integrity up to 20 GHz?

The EV1HMC641ALP4 employs a multi-layer grounding architecture: inner and bottom copper layers serve as solid, uninterrupted ground planes; dense arrays of plated-through vias surround all RF traces and connect directly to the HMC641ALP4E's exposed pad; and the top-layer CPWG design maintains consistent 50 Ω impedance. This structure minimizes ground inductance and ensures return current confinement up to 20 GHz.

Can the EV1HMC641ALP4 be used for hot-switching characterization of the HMC641ALP4E?

Yes, the EV1HMC641ALP4 supports hot-switching evaluation per the HMC641ALP4E's absolute maximum ratings. With proper external bias sequencing (VSS powered before CTRLA/CTRLB), the board allows safe application of RF input while toggling control lines. The layout accommodates thermal monitoring and supports the rated hot-switching power levels: 20 dBm at −5 V and 17 dBm at −3 V across 250 MHz–20 GHz.