Analog Devices Inc. 131656-HMC967LP4E

Overview

HMC967LP4E from Analog Devices (formerly Hittite Microwave) is a GaAs MMIC I/Q downconverter designed for RF-to-IF signal translation in 21–24 GHz systems. It delivers 15 dB small-signal conversion gain, 2.5 dB noise figure, and 25 dBc image rejection with 24-pin 4×4 mm SMT packaging, serving as a compact alternative to hybrid image-reject assemblies in point-to-point radio and satellite communications.

For engineers reviewing the HMC967LP4E datasheet, HMC967LP4E pinout, HMC967LP4E application, or HMC967LP4E equivalent, key selection criteria include its 21–24 GHz RF bandwidth, +6 dBm LO drive requirement, DC–3.5 GHz IF output range, integrated LNA + image-reject mixer architecture, and need for external 90° hybrid to select sideband.

Technical Context

The HMC967LP4E integrates a GaAs MMIC low-noise amplifier followed by an image-reject mixer driven by an active ×2 LO multiplier, eliminating the need for post-LNA image filtering and suppressing thermal noise at the image frequency. Its architecture enables simultaneous I and Q IF outputs without internal phase shifting.

Operation requires external 90° hybrid coupling at IF to resolve USB/LSB; amplitude balance is ±0.5 dB and phase balance is ±12° (measured without hybrid at 500 MHz IF). The device operates from a 3.5 V supply drawing 170–210 mA total current and supports –55°C to +85°C ambient operation.

Key Specifications

Pinout & Package

Package: 24-lead, leadless RoHS-compliant SMT package; 4 mm × 4 mm body size; exposed ground paddle; MSL1 rating; 100% matte Sn finish.

Key Features

Applications

Equivalent & Alternatives

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

Compared with HMC1040LP4E and ADL5380ACPZ-R7, the HMC967LP4E offers superior image rejection and integrated LNA specifically optimized for 21–24 GHz E-band systems, making it the preferred choice where spectral purity and compact front-end integration are critical.

Availability

HMC967LP4E is available at Aetrix Electronics and suitable for point-to-point radio, satellite communications, and military radar applications requiring stable component supply, consistent RF performance across temperature, and long-term obsolescence mitigation.

Supply support for HMC967LP4E 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 its high-frequency RF portfolio, specializing in microwave and millimeter-wave ICs for defense, aerospace, and communications.

The HMC967LP4E belongs to Hittite's GaAs MMIC I/Q downconverter product line, engineered for compact, high-performance front-end integration in E-band wireless and radar systems.

FAQ

What is the recommended LO drive level for optimal performance of the HMC967LP4E?

The HMC967LP4E is characterized at +6 dBm LO drive, delivering 15 dB conversion gain and 25 dBc image rejection. Operating below +6 dBm reduces conversion gain and degrades image rejection; above +6 dBm increases distortion risk. For stable operation, maintain LO drive between +4 dBm and +6 dBm, with proper 50 Ω matching at pin 8. The HMC967LP4E datasheet specifies +6 dBm as the nominal condition for all typical performance metrics.

Does the HMC967LP4E require an external 90° hybrid, and why?

Yes, the HMC967LP4E requires an external 90° hybrid at the IF outputs (pins 14 and 16) to combine I and Q signals and select either upper or lower sideband. The device itself provides true quadrature outputs but lacks internal phase-shifting circuitry. Without the hybrid, sideband separation is not achieved, limiting its use to applications where both sidebands are acceptable or processed separately. This architecture preserves flexibility and minimizes on-die complexity in the HMC967LP4E.

What are the absolute maximum ratings for supply voltage and channel temperature of the HMC967LP4E?

The HMC967LP4E has an absolute maximum supply voltage of 4 V on all VDxx pins (VDRF, VDLO1, VDLO2); exceeding this risks permanent damage. Channel temperature must not exceed +175°C under any condition. At 85°C case temperature, continuous power dissipation is limited to 1.13 W, derating linearly by 12.5 mW/°C above that. These limits are defined in the HMC967LP4E absolute maximum ratings table and apply regardless of operating mode or signal conditions.

Can the HMC967LP4E operate with DC-coupled IF outputs, and what are the current limits?

Yes, both IF1 (pin 14) and IF2 (pin 16) are DC-coupled outputs. However, neither pin may sink or source more than ±3 mA DC current - exceeding this risks non-function or permanent failure. For AC-coupled operation, external series capacitors are required; values must be selected to pass the target IF bandwidth (DC–3.5 GHz). The HMC967LP4E design assumes DC coupling unless otherwise specified in application schematics.

How does the HMC967LP4E achieve image rejection without an external filter?

The HMC967LP4E achieves 25 dBc image rejection through its integrated image-reject mixer topology, which combines the RF signal with quadrature LO phases to cancel the image frequency in the IF domain. This eliminates the need for external image-reject filters after the LNA, unlike conventional superheterodyne architectures. The LNA precedes the mixer, and the active ×2 LO multiplier ensures precise phase relationships - both features are intrinsic to the HMC967LP4E monolithic design.