Analog Devices Inc. HMC232G7

Overview

HMC232G7 from Analog Devices (formerly Hittite Microwave) is a GaAs MMIC SPDT switch in a hermetic surface-mount package, operating from DC to 6 GHz with non-reflective architecture. It delivers 1.9 dB typical insertion loss at 6 GHz, >55 dB isolation up to 2 GHz, and uses complementary -5/0 V control logic without bias supply-ideal for RF front-end switching in microwave radios and radar systems.

For engineers reviewing the HMC232G7 datasheet, HMC232G7 pinout, HMC232G7 application, or HMC232G7 equivalent, key selection criteria include its DC–6 GHz bandwidth, high isolation performance across temperature (-40°C to +85°C), hermetic SMT packaging, and compatibility with standard 50 Ω RF layouts requiring minimal external components.

Technical Context

The HMC232G7 implements a GaAs MESFET-based non-reflective SPDT topology with integrated termination resistors on both "off" paths, enabling stable impedance matching across DC–6 GHz. Its complementary negative logic interface (A/B pins at 0 V / -5 V) eliminates need for level shifters or positive supply rails.

Thermal design is supported by a 94 °C/W junction-to-lead thermal resistance and KOVAR™-based hermetic package rated for 150 °C channel temperature. Absolute maximum RF input power is +30 dBm at +50 °C, with caution advised against hot-switching above +27 dBm under nominal control conditions.

Key Specifications

Pinout & Package

Package: Hermetic 7-lead SMT package (white alumina body, KOVAR™ leads, gold-plated nickel underplate); dimensions per outline drawing; requires soldering of all ground leads and bottom paddle to PCB RF ground.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar SPDT switch applications.

Compared with HMC132G7 and QM11036, the HMC232G7 uniquely combines DC–6 GHz coverage, hermetic reliability, -5/0 V logic, and >55 dB isolation below 2 GHz-making it the preferred choice for mission-critical defense and infrastructure RF switching where signal integrity and environmental resilience are non-negotiable.

Availability

HMC232G7 is available at Aetrix Electronics and suitable for telecom infrastructure, microwave radio & VSAT, and military radios requiring stable component supply, long-lifecycle support, and traceable sourcing for RF front-end assemblies.

Supply support for HMC232G7 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 acquired Hittite Microwave in 2014 and integrates its high-frequency RF portfolio into precision analog and RF solutions for communications, defense, and instrumentation markets.

The HMC232G7 belongs to Analog Devices' legacy Hittite GaAs MMIC switch family, engineered specifically for high-isolation, broadband RF signal routing in demanding microwave and millimeter-wave systems.

FAQ

What is the control voltage requirement for the HMC232G7?

The HMC232G7 requires complementary negative logic control voltages: "High" state is -5 V (typical, up to -7 V max), and "Low" state is 0 to -0.2 V. No positive supply or bias current is needed-only the A and B control lines must be driven to these levels. This simplifies driver design and eliminates external bias circuitry for the HMC232G7.

Does the HMC232G7 require external DC blocking capacitors?

Yes-the HMC232G7 RF ports (RF1, RFC, RF2) are DC-coupled and internally matched to 50 Ω. If the connected RF line has non-zero DC potential, external blocking capacitors must be placed in series to prevent forward biasing or damage. The HMC232G7 datasheet specifies this requirement explicitly for safe operation.

Is the HMC232G7 pin-compatible with the HMC132G7?

Yes-the HMC232G7 is specified as a form, fit, and functional replacement for the HMC132G7, sharing identical pinout, package dimensions, and mounting footprint. No PCB redesign is required when upgrading from HMC132G7 to HMC232G7, and the HMC232G7 delivers improved isolation performance across the same DC–6 GHz range.

What is the maximum RF input power the HMC232G7 can handle?

The absolute maximum RF input power for the HMC232G7 is +30 dBm at +50 °C. However, hot-switching above +27 dBm is cautioned against under nominal -5/0 V control conditions. For reliable operation near compression, the HMC232G7's P1dB is 23–27 dBm across 0.5–6 GHz, making derating essential for high-power TDD or burst-mode applications.

How does the non-reflective design of the HMC232G7 benefit system-level matching?

The HMC232G7's non-reflective architecture terminates both "off" RF paths with internal 50 Ω resistors, ensuring stable input/output impedance regardless of switch state. This prevents VSWR spikes during state transitions and maintains consistent return loss (>12 dB up to 6 GHz "on", >11 dB "off")-a critical advantage over reflective switches when cascading with filters, amplifiers, or antennas in the HMC232G7 signal chain.