Analog Devices Inc. 105000-HMC413QS16G

Overview

HMC413QS16G from Analog Devices (formerly Hittite Microwave) is a GaAs InGaP HBT MMIC power amplifier designed for RF driver and output-stage amplification in 1.6–2.2 GHz systems. It delivers 23 dB small-signal gain, +29.5 dBm saturated output power, and 42% power-added efficiency at +5 V supply, with full power-down control via Vpd pins. It serves as a compact, surface-mount RF power stage in cellular infrastructure and portable wireless transmitters.

For engineers reviewing the HMC413QS16G datasheet, HMC413QS16G pinout, HMC413QS16G application, or HMC413QS16G equivalent, key selection criteria include its 16-lead QFN package with exposed thermal paddle, dual Vpd control for bias/power-down, 50 Ω matched RFIN/RFOUT interfaces, and operation across +2.75 V to +5 V supply range - critical for battery-powered and fixed-line RF designs.

Technical Context

The HMC413QS16G integrates two cascaded GaAs InGaP HBT amplifier stages in a monolithic MMIC structure, with input matched to 50 Ω over 1.6–2.2 GHz and output optimized for high-power delivery into 50 Ω loads. Its Vpd-controlled bias architecture enables dynamic output power adjustment and full RF shutdown without external switching.

Thermal performance is enhanced by an exposed copper ground paddle requiring direct PCB soldering and multiple thermal vias. The device operates from −40 °C to +85 °C with junction-to-paddle thermal resistance of 42 °C/W, supporting continuous 1.56 W dissipation at 85 °C ambient when properly heatsinked.

Key Specifications

Pinout & Package

Package: 16-lead 4×4 mm QFN with exposed thermal paddle (low-stress molded plastic, Sn/Pb finish, MSL1). Requires soldering of all ground leads and paddle to PCB RF ground plane using ≥6 thermal vias.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar RF power amplifier applications.

Compared with QPL9057 and SKY65167-374LF, the HMC413QS16G uniquely combines high Psat (+29.5 dBm), integrated power-down, wide supply range, and low thermal resistance - making it optimal for thermally constrained, power-managed 1.6–2.2 GHz transmitter designs.

Availability

HMC413QS16G is available at Aetrix Electronics and suitable for cellular infrastructure, portable 3G transmitters, and wireless local loop equipment requiring stable component supply, long-term lifecycle support, and traceable sourcing.

Supply support for HMC413QS16G 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 microwave/mmWave ICs for communications, defense, and instrumentation.

The HMC413QS16G belongs to Hittite's legacy GaAs MMIC power amplifier family, engineered specifically for high-efficiency, thermally robust RF amplification in 1.6–2.2 GHz wireless infrastructure and portable systems.

FAQ

What is the recommended PCB layout practice for thermal management of the HMC413QS16G?

The HMC413QS16G requires direct soldering of its exposed ground paddle to a solid PCB ground plane with ≥6 thermal vias (0.3 mm diameter, spaced ≤1 mm apart) connecting to internal/secondary ground layers. All ground pins (1,2,4,5,7,8,9,10,13,15) must also connect to the same plane via short traces. This achieves the specified 42 °C/W thermal resistance and supports 1.56 W continuous dissipation at 85 °C ambient. Failure to implement this results in junction temperature exceedance and reliability degradation.

Can the HMC413QS16G operate reliably at +5 V supply without external components on the Vpd pins?

No - the HMC413QS16G Vpd pins (3 and 14) must be biased at 3.6 V for full-power operation at +5 V supply. Applying +5 V directly risks exceeding the absolute maximum Vpd rating of +4.0 Vdc. A resistive divider (e.g., R1 = 1.5 kΩ, R2 = 4.3 kΩ from Vcc to GND) is required to generate 3.6 V at Vpd. This constraint is explicitly defined in the Absolute Maximum Ratings table and application schematics for the HMC413QS16G.

What is the small-signal gain flatness of the HMC413QS16G across its operating band?

The HMC413QS16G exhibits gain flatness of ±2 dB across 1.6–2.2 GHz at +5 V supply: minimum gain is 21 dB (2.1–2.2 GHz), typical is 23 dB (1.7–2.0 GHz), and maximum is 23 dB (1.6–1.7 GHz). This 2 dB variation - confirmed in the Electrical Specifications table and Gain vs. Frequency plots - supports broadband operation without per-channel gain compensation in PCS and 3G baseband architectures.

Does the HMC413QS16G require external input/output matching networks?

No - the HMC413QS16G features fully integrated 50 Ω input (RFIN, Pin 6) and 50 Ω output (RFOUT, Pins 11 & 12) matching across 1.6–2.2 GHz. The datasheet specifies return loss of ≥10 dB (input) and ≥8 dB (output) across the band, confirming broadband 50 Ω compatibility. Only DC blocking capacitors (2.2 pF on RFIN, 10 pF on RFOUT) and a 330 pF Vcc bypass capacitor are required per the application schematic for the HMC413QS16G.

How does the HMC413QS16G behave under temperature variation, particularly for gain stability?

The HMC413QS16G maintains gain stability of 0.025–0.035 dB/°C across 1.6–2.2 GHz, verified in the Electrical Specifications table and Gain vs. Temperature plots. At +85 °C, gain decreases by ≤0.6 dB relative to +25 °C; at −40 °C, it increases by ≤0.7 dB. This tight thermal coefficient enables stable RF link budgets in unregulated outdoor environments without active gain compensation - a key advantage over discrete transistor solutions for the HMC413QS16G.