Analog Devices Inc. HMC412AMS8GETR

Overview

HMC412AMS8GETR from Analog Devices (formerly Hittite Microwave) is a passive double-balanced mixer operating from 9.0 to 15.0 GHz RF/LO with DC–2.5 GHz IF bandwidth, 8 dB typical conversion loss, 19 dBm input IP3, and no external bias or components required. It serves as a core downconversion element in microwave radio transceivers requiring high LO-to-RF isolation (44 dB) and stable performance across -55°C to +85°C.

For engineers reviewing the HMC412AMS8GETR datasheet, HMC412AMS8GETR pinout, HMC412AMS8GETR application, or HMC412AMS8GETR equivalent, key selection criteria include its 8 dB conversion loss flatness across 9–15 GHz, +9 to +13 dBm LO drive range, MSOP8G package compatibility, and absence of DC biasing requirements in RF front-end designs.

Technical Context

The HMC412AMS8GETR implements a passive diode-ring double-balanced architecture with balanced LO and RF ports enabling high suppression of even-order harmonics and LO leakage. Its internal topology eliminates the need for external DC blocking or bias networks while maintaining 50 Ω impedance matching on LO (Pin 2) and RF (Pin 7) ports.

It operates exclusively as a passive device-no power supply or control logic is required. Performance is specified at TA = +25°C, IF = 1.45 GHz, and LO = +13 dBm, with conversion loss, noise figure (8 dB SSB), and isolation metrics validated under these conditions across the full 9–15 GHz band.

Key Specifications

Pinout & Package

Package: MSOP8G surface-mount package with exposed ground paddle for RF grounding and thermal management. RoHS-compliant version uses 100% matte Sn lead finish (MSL1, 260°C peak reflow).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar passive double-balanced mixer applications.

Compared with HMC412AMS8GETR, HMC1048LP4E trades bandwidth for slightly degraded loss, while QPC1006 improves linearity and loss at the cost of LO drive level and package incompatibility-making HMC412AMS8GETR optimal for space-constrained, +13 dBm LO-driven 9–15 GHz downconverters.

Availability

HMC412AMS8GETR is available at Aetrix Electronics and suitable for long-haul radio platforms, microwave point-to-point radios, and VSAT terminals requiring stable component supply across extended product lifecycles despite its obsolete status.

Supply support for HMC412AMS8GETR 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 maintains legacy RF product support, including obsolescence management and controlled-batch manufacturing for critical microwave components.

The HMC412AMS8GETR belongs to Hittite's passive mixer product line, engineered specifically for high-isolation, low-loss downconversion in licensed microwave bands used in telecom infrastructure and defense communications.

FAQ

What is the recommended LO drive level for optimal performance of the HMC412AMS8GETR?

The HMC412AMS8GETR achieves best conversion loss flatness and IP3 across 9–15 GHz at +13 dBm LO drive. Operation between +9 and +13 dBm is supported, but below +11 dBm increases conversion loss variation; above +13 dBm yields diminishing linearity returns and risks exceeding absolute max ratings. The HMC412AMS8GETR datasheet specifies all key parameters at +13 dBm LO.

Does the HMC412AMS8GETR require external DC bias or matching components?

No. The HMC412AMS8GETR is a fully passive double-balanced mixer requiring no DC bias, external baluns, or impedance-matching networks. Its LO (Pin 2) and RF (Pin 7) ports are internally matched to 50 Ω, and the IF (Pin 5) is DC-coupled-only external AC coupling is needed if DC response is not required. This simplifies integration in the HMC412AMS8GETR-based design.

What is the maximum RF input power the HMC412AMS8GETR can handle without damage?

The HMC412AMS8GETR has an absolute maximum RF/IF input rating of +24 dBm. However, for reliable linear operation, input power should remain ≤11.5 dBm (P1dB point) to avoid compression. Sustained exposure above +24 dBm may cause permanent degradation of diode junctions or bond wires in the HMC412AMS8GETR die.

How does the exposed ground paddle on the HMC412AMS8GETR package affect thermal and RF performance?

The exposed paddle on the HMC412AMS8GETR must be soldered to a solid ground plane with ≥6 thermal vias to achieve the specified 230.5 °C/W thermal resistance. This connection simultaneously provides low-inductance RF grounding-critical for maintaining >44 dB LO–RF isolation above 10 GHz. Inadequate paddle soldering directly degrades both thermal derating and RF port isolation in the HMC412AMS8GETR.

Is the HMC412AMS8GETR still in active production, and what support is available?

The HMC412AMS8GETR is marked obsolete by Analog Devices but remains available through authorized distributors and Aetrix Electronics with controlled-lifecycle sourcing. Obsolescence management includes last-time-buy planning, cross-reference validation, and technical support for legacy design refresh-ensuring continued viability of existing HMC412AMS8GETR-based systems.