Analog Devices Inc. 106137-HMC443LP4

Overview

106137-HMC443LP4 from Analog Devices (formerly Hittite Microwave) is a GaAs HBT MMIC x4 active frequency multiplier in a 4×4 mm leadless SMT package, delivering +4 dBm typical output power across 9.8–11.2 GHz output range with -142 dBc/Hz SSB phase noise at 100 kHz offset and >25 dBc sub-harmonic suppression. It operates from a single 5 V supply at 52 mA and is used in X-band LO multiplier chains for radar and point-to-point radios.

For engineers reviewing the 106137-HMC443LP4 datasheet, 106137-HMC443LP4 pinout, 106137-HMC443LP4 application, or 106137-HMC443LP4 equivalent, key selection criteria include input frequency range (2.45–2.80 GHz), output return loss (8 dB typ), thermal operating range (-40 to +85 °C), and RFOUT AC-coupled interface requiring no external DC blocking.

Technical Context

The 106137-HMC443LP4 implements a monolithic InGaP GaAs HBT-based x4 multiplication architecture with integrated bias network and on-chip matching, enabling stable gain and output power over temperature and supply voltage variation. Its design eliminates need for external tuning components in standard 50 Ω systems.

Input return loss exceeds 15 dB across 2.45–2.80 GHz, while output return loss remains ≥8 dB over 9.8–11.2 GHz - confirming robust impedance match into both driver and load stages. The device requires external DC blocking only at RFIN if driven by a DC-biased source.

Key Specifications

Pinout & Package

24-lead 4×4 mm leadless surface-mount package (16 mm² footprint) with exposed ground paddle; RoHS-compliant Sn/Pb finish (MSL1); thermal resistance 130.8 °C/W junction-to-paddle.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar active frequency multiplier applications.

Compared with HMC443LP4E, the 106137-HMC443LP4 offers identical RF specs but uses Sn/Pb finish and lower reflow ceiling; versus HMC575LP3E, it provides fixed x4 ratio and lower phase noise at cost of reduced output power and narrower band - making it optimal for precision X-band LO generation where multiplication factor and noise are critical.

Availability

106137-HMC443LP4 is available at Aetrix Electronics and suitable for X-band radar systems, fiber optic transmitters, point-to-point radios, and satellite uplink equipment requiring stable component supply and guaranteed long-term availability.

Supply support for 106137-HMC443LP4 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/mmWave ICs for defense, communications, and instrumentation.

The 106137-HMC443LP4 belongs to Hittite's active multiplier product line, designed specifically for compact, low-phase-noise LO synthesis in X-band radar and wireless infrastructure where size, power efficiency, and spectral purity are critical.

FAQ

What is the input frequency range supported by the 106137-HMC443LP4?

The 106137-HMC443LP4 accepts RF input between 2.45 GHz and 2.80 GHz, corresponding to a precise x4 multiplication ratio that yields 9.8–11.2 GHz output. This range is verified per datasheet Table "Electrical Specifications" and confirmed in functional diagrams showing matched input impedance across the band. Input return loss remains ≥15 dB throughout this span, ensuring reliable drive from standard S-band synthesizers.

Does the 106137-HMC443LP4 require external DC blocking on the RFOUT pin?

No, the 106137-HMC443LP4 features an internally AC-coupled RFOUT pin (Pin 16), so no external DC blocking capacitor is needed at the output. However, RFIN (Pin 3) requires external DC blocking only if the driving source applies DC bias - otherwise, it may be connected directly. This configuration is explicitly stated in the Pin Description section of the datasheet.

What is the thermal resistance and maximum junction temperature of the 106137-HMC443LP4?

The 106137-HMC443LP4 has a thermal resistance (Rth) of 130.8 °C/W from junction to ground paddle, with a maximum channel temperature of 135 °C. At 85 °C ambient, it supports 500 mW continuous dissipation, derating by 7.6 mW/°C above that temperature. These values are specified in the Absolute Maximum Ratings table and validated via thermal simulation in Hittite Application Note AN-1003.

Is the 106137-HMC443LP4 pin-compatible with the HMC443LP4E variant?

Yes, the 106137-HMC443LP4 is mechanically and electrically pin-compatible with the HMC443LP4E - same 24-lead 4×4 mm package, identical pin functions, and matching land pattern. The only differences are RoHS compliance (matte Sn vs. Sn/Pb) and MSL1 reflow profile (260 °C vs. 235 °C). No PCB changes are required when migrating between them.

What evaluation board is recommended for prototyping with the 106137-HMC443LP4?

Hittite's Evaluation PCB 104610 is the designated platform for the 106137-HMC443LP4, featuring SMA connectors (J1–J3), 1000 pF 0603 decoupling capacitors (C1), and Rogers 4350 substrate optimized for 50 Ω impedance control. The board layout follows Hittite's recommended land pattern and grounding guidelines to preserve RF performance - documented in Application Note AN-1005.