Analog Devices Inc. HMC340ALP5TR

Overview

HMC340ALP5TR from Analog Devices (formerly Hittite Microwave) is a GaAs MMIC double-balanced dual mixer IC operating from 1.7 to 4.5 GHz RF/LO, with DC–1.5 GHz IF bandwidth, 8.0 dB typical conversion loss, +20 dBm input IP3, and 45 dB LO/RF isolation. It serves as a passive upconverter/downconverter or I/Q modulator in wireless infrastructure transceivers.

For engineers reviewing the HMC340ALP5TR datasheet, HMC340ALP5TR pinout, HMC340ALP5TR application, or HMC340ALP5TR equivalent, key selection criteria include its dual-channel symmetry for image-reject architectures, 5×5 mm QFN package with exposed ground paddle, temperature-stable amplitude balance (<0.25 dB), and LO drive sensitivity at +13 dBm.

Technical Context

The HMC340ALP5TR integrates two identical passive double-balanced mixer cores on a single GaAs die, each using Schottky diodes and monolithic baluns. Its symmetrical RF/LO/IF port matching (50 Ω DC-coupled) enables use in phase-sensitive configurations such as SSB upconversion and image-reject downconversion when paired with external hybrids.

It operates without bias-fully passive-with performance specified at +13 dBm LO drive and 100 MHz IF. Key thermal limits include 150°C channel temperature and 60.4 °C/W junction-to-package thermal resistance, requiring direct soldering of the exposed paddle to PCB ground for RF and thermal integrity.

Key Specifications

Pinout & Package

32-lead 5×5 mm leadless QFN (LP5) package with exposed thermal/RF ground paddle on bottom. All ground leads and paddle must be soldered to PCB RF ground per Hittite Application Note land pattern guidance.

Key Features

Applications

Equivalent & Alternatives

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

Compared with HMC340ALP5E and ADL5802ACPZ-R7, the HMC340ALP5TR offers widest RF bandwidth (1.7–4.5 GHz) and zero-bias operation, making it optimal for high-frequency, thermally constrained wireless infrastructure where passive linearity and LO rejection are critical.

Availability

HMC340ALP5TR is available at Aetrix Electronics and suitable for wireless infrastructure transceivers, microwave backhaul modems, satellite communication receivers, and radar test equipment requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for HMC340ALP5TR 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 mmWave, microwave, and RF signal chain components for defense, communications, and instrumentation.

The HMC340ALP5TR belongs to Hittite's legacy GaAs MMIC mixer family, designed specifically for high-linearity, wideband dual-channel mixing in cellular infrastructure and aerospace systems where passive reliability and thermal stability are essential.

FAQ

What is the operating temperature range for the HMC340ALP5TR?

The HMC340ALP5TR is rated for operation from −40°C to +85°C ambient temperature. Its GaAs MMIC die supports channel temperatures up to 150°C, and thermal performance relies on proper soldering of the exposed paddle to a low-impedance PCB ground plane with sufficient thermal vias. Derating applies above 85°C per the 1.07 W continuous dissipation limit.

Does the HMC340ALP5TR require DC bias or external power?

No, the HMC340ALP5TR is a fully passive GaAs Schottky diode-based mixer and requires no DC bias or external power supply. It operates solely on LO drive (typically +13 dBm) and RF/IF signal levels. All ports are DC-coupled, but the IF pins must not source or sink more than ±4 mA if used in DC-coupled mode to avoid damage.

Can the HMC340ALP5TR be used for both upconversion and downconversion?

Yes, the HMC340ALP5TR supports bidirectional operation: as a downconverter (RF→IF) or upconverter (IF→RF), depending on signal routing. Its symmetrical port design and balanced architecture allow flexible use in either direction without hardware change-verified in both configurations in the Hittite evaluation report for HMC340ALP5TR.

What is the recommended PCB layout practice for the HMC340ALP5TR?

Per Hittite Application Note, the HMC340ALP5TR requires 50 Ω controlled-impedance RF traces, direct connection of all ground leads and the exposed paddle to a solid top-layer ground plane, and ≥8 thermal vias under the paddle tied to inner/ground planes. The Rogers 4350-based evaluation board (P/N 107467) demonstrates this layout, minimizing parasitic inductance and ensuring repeatable RF performance.

How does the HMC340ALP5TR achieve image rejection in downconversion?

The HMC340ALP5TR achieves image rejection by leveraging its dual-mixer symmetry: when combined with an external 180° hybrid at the RF input and summing the IF outputs, the desired signal adds constructively while the image cancels. This configuration-documented in the HMC340ALP5TR application circuit-delivers >50 dB image suppression across 1.7–4.5 GHz without calibration.