Analog Devices Inc. HMC-C047

Overview

HMC-C047 from Analog Devices (formerly Hittite Microwave) is a GaAs MMIC passive I/Q mixer module operating from 30–38 GHz RF/LO and DC–3.5 GHz IF, supporting image-reject downconversion and single-sideband upconversion with 15 dB typical image rejection, 19 dBm input IP3, and hermetic C-4B packaging. It serves in millimeter-wave point-to-point radios and military test equipment.

For engineers reviewing the HMC-C047 datasheet, HMC-C047 pinout, HMC-C047 application, or HMC-C047 equivalent, key selection criteria include RF/IF bandwidth coverage, LO drive sensitivity (+17 dBm typical), amplitude/phase balance tolerance, thermal stability across –55°C to +85°C, and field-replaceable SMA connector compatibility.

Technical Context

The HMC-C047 integrates two double-balanced GaAs MESFET mixer cells with an on-die 90° hybrid for quadrature signal processing, enabling true I/Q operation without external phase-shifting networks. Its architecture supports both IRM and SSB upconversion modes using the same core MMIC die.

DC-coupled IF1/IF2 ports allow baseband operation down to 0 Hz, while AC-coupled RF and LO ports are impedance-matched to 50 Ω. The module's hermetic C-4B package ensures reliability in harsh environments, and removable SMA connectors permit direct microstrip or coplanar waveguide integration.

Key Specifications

Pinout & Package

Package: Hermetic C-4B metal can with gold-plated Kovar body, nickel-plated aluminum mounting spacer, and field-replaceable Tensolite 5602-5CCSF SMA connectors. Dimensions per outline drawing; weight 20 g ±1 g including connectors.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar I/Q mixer applications.

Compared with HMC1040LP4E and ADMV1013, the HMC-C047 delivers superior RF bandwidth coverage and passive reliability in E-band deployments, though it lacks on-chip LO synthesis and requires discrete IF hybrid implementation.

Availability

HMC-C047 is available at Aetrix Electronics and suitable for point-to-point radios, military communications systems, and millimeter-wave test equipment requiring stable component supply over extended lifecycle horizons.

Supply support for HMC-C047 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 semiconductor leader specializing in high-performance analog, mixed-signal, and RF technologies for precision signal processing and connectivity.

The HMC-C047 belongs to the legacy Hittite Microwave MMIC mixer product line, designed specifically for millimeter-wave communication and instrumentation systems demanding high linearity, wide IF bandwidth, and environmental robustness.

FAQ

What is the recommended LO drive level for optimal performance of the HMC-C047?

The HMC-C047 achieves best conversion gain, image rejection, and amplitude/phase balance at +17 dBm LO drive. Performance degrades below +15 dBm (increased conversion loss) and above +19 dBm (risk of compression). The absolute maximum LO rating is +27 dBm, but sustained operation above +19 dBm may reduce reliability. Always verify LO power with calibrated source before integrating HMC-C047 into final design.

Can the HMC-C047 operate with DC-coupled IF outputs in baseband applications?

Yes, the HMC-C047 supports true DC-coupled IF1 and IF2 outputs, enabling zero-IF architectures. However, each IF port must not source or sink more than ±3 mA DC current to avoid non-function or damage. For baseband use, ensure external circuitry complies with this limit and provides proper DC biasing or termination as needed for the connected ADC or baseband processor.

Does the HMC-C047 require external IF quadrature hybrid for I/Q operation?

Yes - the HMC-C047 contains internal RF/LO hybrids but does not integrate the IF 90° hybrid. An external IF hybrid is required to combine IF1 and IF2 outputs for image-reject downconversion or to generate SSB upconversion. Data sheets specify performance "with external IF 90° hybrid"; omitting it results in standard double-balanced mixer behavior without image rejection.

What is the significance of the C-4B package in the HMC-C047?

The C-4B package is a hermetically sealed metal can with gold-plated Kovar body and field-replaceable SMA connectors. It provides mechanical rigidity, thermal stability across –55°C to +85°C, and RF shielding critical for mmWave operation. Unlike plastic QFN packages, C-4B maintains parameter consistency under humidity, vibration, and thermal cycling - essential for aerospace and defense deployments of the HMC-C047.

How does the HMC-C047 compare to hybrid-style I/Q mixers in terms of repeatability and reliability?

The HMC-C047 replaces traditional hybrid-style I/Q mixers by integrating all active and passive elements onto a single GaAs MMIC die within a controlled hermetic environment. This eliminates manual wire bonding, alignment variability, and solder joint failure modes - resulting in tighter amplitude/phase balance (±1 dB / ±12°), consistent conversion loss, and higher mean time between failures. These advantages make the HMC-C047 more repeatable in production and more reliable in fielded systems than discrete hybrid assemblies.