Analog Devices Inc. 108338-HMC462LP5

Overview

HMC462LP5 from Analog Devices (formerly Hittite Microwave) is a GaAs pHEMT MMIC low-noise amplifier operating from 2 to 20 GHz, delivering 13 dB gain, 2.5 dB noise figure at 10 GHz, +14.5 dBm P1dB output power, and self-biasing from a single +5 V supply drawing 66 mA - used in RF front-ends for EW, ECM, radar, and test instrumentation.

For engineers reviewing the HMC462LP5 datasheet, HMC462LP5 pinout, HMC462LP5 application, or HMC462LP5 equivalent, this wideband LNA offers verified 50 Ω matched I/O, excellent gain flatness (±0.5 dB from 6–18 GHz), and MSL1 leadless 5×5 mm SMT packaging suitable for high-frequency microwave signal conditioning.

Technical Context

The HMC462LP5 employs a distributed amplifier architecture using GaAs pHEMT technology to achieve broadband operation across 2–20 GHz without external tuning. Its self-biased topology eliminates need for gate bias circuitry while maintaining stable DC operating point over temperature.

All RF ports are internally AC-coupled and matched to 50 Ω, enabling direct integration into 50 Ω systems without external matching networks. The ground paddle must be soldered to PCB RF/DC ground per design note, and thermal resistance is specified at 52 °C/W (channel-to-paddle).

Key Specifications

Pinout & Package

Package: 5×5 mm leadless surface-mount package (MSL1), low-stress injection-molded plastic body with Sn/Pb lead finish; ground paddle requires full-solder connection to PCB RF ground plane.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar low-noise amplifier applications.

Compared with HMC462LP5E, the HMC462LP5 offers identical RF performance with Sn/Pb finish for legacy processes, while QPL9057 trades bandwidth for superior sub-6 GHz noise and power - making HMC462LP5 the sole choice for wideband military and instrumentation use cases requiring 2–20 GHz continuity.

Availability

HMC462LP5 is available at Aetrix Electronics and suitable for electronic warfare systems, microwave test equipment, and fiber-optic transceiver front-ends requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for HMC462LP5 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 product portfolio, specializing in precision RF, microwave, and mmWave ICs for defense, communications, and instrumentation.

The HMC462LP5 belongs to Hittite's legacy GaAs pHEMT MMIC amplifier family, engineered specifically for wideband, low-noise, high-linearity applications in EW, radar, and automated test equipment where frequency agility and signal fidelity are critical.

FAQ

What is the operating temperature range for the HMC462LP5?

The HMC462LP5 operates reliably from −40 °C to +85 °C ambient temperature. Its gain variation over temperature is tightly controlled at 0.015–0.04 dB/°C depending on frequency band, and noise figure remains stable across this range - confirmed by characterization data in the official datasheet v05.0213. Thermal design must account for 52 °C/W channel-to-paddle resistance when deploying HMC462LP5 in sealed enclosures or high-power-density layouts.

Does the HMC462LP5 require external bias circuitry?

No, the HMC462LP5 is self-biased and requires only a single +5 V DC supply applied to pin 30 (Vdd), drawing 66 mA typical. No gate voltage adjustment or external bias network is needed - all biasing is integrated within the GaAs pHEMT MMIC die. External 100 pF, 1000 pF, and 4.7 µF bypass capacitors are mandatory at the Vdd pin to suppress supply noise and ensure stable HMC462LP5 operation across 2–20 GHz.

Is the HMC462LP5 pin-compatible with the HMC462LP5E?

Yes, the HMC462LP5 and HMC462LP5E share identical pinout, 5×5 mm footprint, and electrical specifications - differing only in RoHS compliance (matte Sn vs. Sn/Pb finish) and maximum reflow temperature (260 °C vs. 235 °C). Both versions use the same land pattern and grounding requirements, making them drop-in replacements in compatible assembly processes - a key detail confirmed in the Hittite package documentation for HMC462LP5 and HMC462LP5E.

What is the absolute maximum RF input power rating for the HMC462LP5?

The absolute maximum RF input power for the HMC462LP5 is +18 dBm when Vdd = +5 Vdc - exceeding this risks permanent damage to the GaAs pHEMT transistor cells. This rating assumes proper thermal management and grounding; operation near this limit should include input attenuation or limiter protection in high-dynamic-range receiver architectures using the HMC462LP5 to prevent degradation or failure.

How is the ground paddle of the HMC462LP5 implemented in PCB layout?

The ground paddle of the HMC462LP5 must be fully soldered to the PCB's RF/DC ground plane using a solid copper area and ≥8 thermal vias (0.3 mm diameter, spaced ≤1 mm apart) connecting to inner and bottom ground layers. Per Hittite Application Note guidance, insufficient paddle soldering causes degraded RF performance, increased noise figure, and thermal runaway - making correct HMC462LP5 paddle implementation non-negotiable for production-grade microwave assemblies.