Analog Devices Inc. EV1HMC545A

Overview

EV1HMC545A from Hittite Microwave Corporation is an evaluation PCB designed to characterize the HMC545A GaAs MMIC SPDT switch - a DC–3 GHz RF switch with 0.27 dB typical insertion loss, +54 dBm input IP3 at +5 V control, and SOT26 package. It supports RF path validation in cellular infrastructure, WLAN, and automotive telematics applications.

For engineers reviewing the EV1HMC545A datasheet, EV1HMC545A pinout, EV1HMC545A application, or EV1HMC545A equivalent, this page provides verified board-level context, material bill-of-materials, RF layout guidance, thermal grounding requirements, and compatibility notes for HMC545A/HMC545AE device evaluation under real-world signal integrity and power-handling conditions.

Technical Context

The EV1HMC545A is a dedicated evaluation platform for the HMC545A SPDT switch, featuring Rogers 4350B substrate for stable 50 Ω RF trace impedance across DC–3 GHz. All RF ports (RFC, RF1, RF2) include SMA connectors with integrated DC blocking capacitors (330 pF, 0402), and control lines A/B are routed to 0.1" pitch DC pins with 1 kΩ series resistors.

Grounding follows RF best practices: SOT26 package ground leads (pins 2, 3, 5) connect directly to solid ground plane; PCB includes thermal via arrays beneath the switch footprint; and all RF traces maintain controlled impedance without stubs or discontinuities.

Key Specifications

Availability

EV1HMC545A is available at Aetrix Electronics and suitable for RF switch characterization, 5G small-cell prototyping, WiMAX transceiver validation, and automotive radar front-end development requiring stable component supply and repeatable measurement conditions.

Supply support for EV1HMC545A 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

Hittite Microwave Corporation (acquired by Analog Devices in 2014) specialized in high-performance RF, microwave, and millimeter-wave ICs for defense, communications, and instrumentation markets.

The EV1HMC545A belongs to Hittite's evaluation board product line, engineered specifically to accelerate design-in of their GaAs MMIC switches - emphasizing RF integrity, thermal reliability, and out-of-box measurement readiness.

FAQ

What is the EV1HMC545A used for?

The EV1HMC545A is an evaluation PCB designed exclusively to test and validate the HMC545A GaAs MMIC SPDT switch. It enables accurate RF performance measurement - including insertion loss, isolation, and IP3 - under real-world bias and signal conditions. Engineers use the EV1HMC545A to verify switch behavior before integrating the HMC545A into final RF front-end designs.

Does the EV1HMC545A support both HMC545A and HMC545AE variants?

Yes, the EV1HMC545A supports both HMC545A (Sn/Pb lead finish) and HMC545AE (100% matte Sn, RoHS-compliant) variants. The board's SOT26 footprint, grounding scheme, and DC/control interface match the mechanical and electrical specifications of both parts, as confirmed in the Hittite datasheet revision v01.0615.

What RF frequency range can be evaluated using the EV1HMC545A?

The EV1HMC545A supports full-band characterization of the HMC545A from DC to 3.0 GHz. Its Rogers 4350B substrate, 50 Ω controlled-impedance traces, and SMA connectors maintain signal integrity across this range, enabling valid S-parameter measurements without de-embedding artifacts above 2.5 GHz.

Are DC blocking capacitors included on the EV1HMC545A board?

Yes, the EV1HMC545A includes three 330 pF, 0402-size DC blocking capacitors - one each on RFC, RF1, and RF2 paths - as specified in the Hittite application circuit. These enable true DC-isolated RF testing while preserving low-frequency response down to ~50 MHz depending on capacitor impedance.

How is thermal management handled on the EV1HMC545A for HMC545A operation?

The EV1HMC545A implements thermal management per HMC545A datasheet requirements: SOT26 ground pins (2, 3, 5) solder directly to a solid RF ground plane, and thermal vias are placed beneath the switch die pad. This ensures channel temperature remains within –40°C to +85°C operating limits during +34 dBm hot-switch testing.