Analog Devices Inc. HMC260A-SX

Overview

HMC260A-SX from Analog Devices is a GaAs MMIC double-balanced passive mixer operating from 10 GHz to 26 GHz, supporting both upconversion and downconversion with no DC bias required. It delivers 7.5–8.5 dB typical conversion loss, 18–22 dBm IP3, and dc-to-8 GHz IF bandwidth in a 0.94 mm × 0.59 mm bare-die package. It is used in millimeter-wave point-to-point radios and military test equipment where high-frequency signal translation with minimal external circuitry is critical.

For engineers reviewing the HMC260A-SX datasheet, HMC260A-SX pinout, HMC260A-SX application, or HMC260A-SX equivalent, this page provides verified RF/LO/IF port roles, temperature-stable performance across −55°C to +85°C, isolation specs (LO-RF ≥40 dB), and direct substitution guidance for millimeter-wave mixer selection.

Technical Context

The HMC260A-SX implements a double-balanced topology using integrated balun structures to achieve high LO-to-RF and LO-to-IF suppression. Its passive architecture eliminates DC bias requirements and enables operation over full dc-to-8 GHz IF bandwidth without external matching components.

It functions as either an upconverter (dc–8 GHz IF → 10–26 GHz RF) or downconverter (10–26 GHz RF → dc–8 GHz IF) with 13 dBm nominal LO drive. Performance remains stable across −40°C to +85°C, supported by measured P1dB (9.5–12 dBm), IP3 (18–22 dBm), and noise figure (11–11.5 dB) across its two RF sub-bands.

Key Specifications

Pinout & Package

Package: C-7-4 7-pad GaAs MMIC bare die (0.94 mm × 0.59 mm × 0.102 mm), back-metallized for eutectic or conductive epoxy mounting. Requires gold ribbon wire bonding (3 mil × 0.5 mil) to 50 Ω microstrip lines on 0.127 mm alumina substrates.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar mmWave mixer applications.

Compared with HMC260A-SX, HMC260ALC3B offers identical RF performance in a surface-mount package but forfeits the ultra-low profile of bare-die integration, while QPC1006 trades passive simplicity and wider bandwidth for active gain and higher DC power dependency.

Availability

HMC260A-SX is available at Aetrix Electronics and suitable for point-to-point radios, military electronic warfare systems, and mmWave test instrumentation requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for HMC260A-SX 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 is a global leader in high-performance analog, mixed-signal, and RF ICs, serving communications, defense, and instrumentation markets with precision signal processing solutions.

The HMC260A-SX belongs to Analog Devices' Hittite Microwave MMIC product line, designed specifically for millimeter-wave infrastructure requiring broadband, passive, and thermally robust frequency translation.

FAQ

What is the operating temperature range for the HMC260A-SX?

The HMC260A-SX is rated for continuous operation from −55°C to +85°C ambient temperature, with a maximum channel temperature of 175°C. Its performance parameters-including conversion loss, IP3, and isolation-are characterized across this full range, making it suitable for uncooled outdoor radio units and avionics environments where thermal cycling is expected. The HMC260A-SX maintains stable RF behavior even at extreme temperatures due to its GaAs MMIC process and optimized balun design.

Does the HMC260A-SX require DC bias voltage or current?

No, the HMC260A-SX is a fully passive double-balanced mixer and requires no DC bias voltage or current. It operates solely on RF and LO signal energy, eliminating the need for bias tees, decoupling networks, or power regulation circuitry. The IF port is dc-coupled but must not source or sink more than ±3 mA; external dc blocking is recommended unless true dc response is required. This passive nature simplifies system design and improves reliability in high-reliability mmWave applications.

How does the HMC260A-SX differ from the HMC260ALC3B?

The HMC260A-SX and HMC260ALC3B share identical GaAs MMIC die and electrical specifications-including 10–26 GHz operation, 7.5–8.5 dB conversion loss, and 40 dB LO–RF isolation. Their sole difference is packaging: HMC260A-SX is supplied as a bare die in C-7-4 format for wire-bond hybrid assembly, while HMC260ALC3B uses a leadless ceramic chip carrier (LC3) for surface-mount PCB integration. Mechanical mounting, thermal path, and assembly process-not RF performance-distinguish them.

What is the recommended LO drive level for optimal performance of the HMC260A-SX?

The HMC260A-SX is specified for optimal linearity and conversion efficiency at LO drive levels of 13 dBm or higher. At 13 dBm, it achieves 7.5–8.5 dB typical conversion loss, 18–22 dBm IP3, and >40 dB LO–RF isolation. Lower LO drive (e.g., 9–11 dBm) increases conversion loss and degrades IP3 and P1dB-verified in Figures 10, 11, and 15 of the datasheet. System designs should ensure stable 13 dBm ±1 dB LO power across temperature and frequency to maintain datasheet performance.

Can the HMC260A-SX be used for both upconversion and downconversion?

Yes, the HMC260A-SX is a bidirectional double-balanced mixer capable of both upconversion (dc–8 GHz IF → 10–26 GHz RF) and downconversion (10–26 GHz RF → dc–8 GHz IF). Its symmetrical port design and balanced architecture allow flexible signal routing. Application circuits in the datasheet confirm operation in both modes with identical LO drive requirements and performance metrics-enabling reuse in transceiver architectures without redesigning the front-end RF section.