Analog Devices Inc. 117355-HMC626LP5

Overview

The 117355-HMC626LP5 from Hittite Microwave Corporation is a GaAs MMIC 6-bit digital variable gain amplifier operating from DC to 1 GHz, delivering 8.5–40 dB gain in 0.5 dB steps, +36 dBm output IP3, 2.8 dB noise figure at max gain, and ±0.25 dB typical gain step error - ideal for IF/RF signal conditioning in cellular infrastructure and microwave radio.

For engineers reviewing the 117355-HMC626LP5 datasheet, 117355-HMC626LP5 pinout, 117355-HMC626LP5 application, or 117355-HMC626LP5 equivalent, key selection criteria include its 32-pin 5×5 mm QFN package, single +5 V supply, 31.5 dB control range, DC-coupled I/O with external AC-ground capacitors, and RoHS-compliant Sn/Pb lead finish.

Technical Context

The 117355-HMC626LP5 implements a digitally controlled, DC–1 GHz GaAs MMIC architecture with six independent TTL/CMOS-compatible control lines (V1–V6) enabling precise 0.5 dB LSB gain adjustment. Its internal biasing eliminates external matching components, and off-chip AC-ground capacitors on ACG1–ACG7 pins support near-DC operation.

It features dual RF input (RFin1/RFin2) and dual RF output (RFout1/RFout2) paths with integrated Vcc bias delivery via RFout pins, requiring external bias tees. Gain accuracy is referenced to maximum gain state, with step error bounded by ±(0.15 + 3% of relative setting) across 0.5–1.0 GHz.

Key Specifications

Pinout & Package

32-lead, 5×5 mm RoHS-compliant QFN package with exposed thermal paddle; Sn/Pb lead finish, MSL1 rating, max reflow 235 °C. All ground leads and paddle must be soldered to PCB RF ground per Hittite land pattern guidelines.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar digital VGA applications.

Compared with the 117355-HMC626LP5, the HMC681LP5 offers identical RF performance with serial control-reducing pin count but increasing firmware dependency-while the QM11036 extends bandwidth to 2.5 GHz and lowers supply voltage, at the cost of reduced gain range and non-pin-compatible layout.

Availability

117355-HMC626LP5 is available at Aetrix Electronics and suitable for cellular infrastructure, microwave radio, and automated test equipment requiring stable component supply, consistent RF performance across temperature, and long-lifecycle availability.

Supply support for 117355-HMC626LP5 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

Hittite Microwave Corporation (now part of Analog Devices) specialized in high-performance RFICs and MMICs for defense, communications, and instrumentation markets before its 2014 acquisition.

The HMC626LP5 belongs to Hittite's digital VGA product line, designed specifically for precision gain control in DC–1 GHz IF/RF signal chains where repeatability, linearity, and minimal external components are critical.

FAQ

What is the operating frequency range of the 117355-HMC626LP5?

The 117355-HMC626LP5 operates from DC to 1.0 GHz, supporting baseband, IF, and RF applications without external tuning. Its flat gain response and stable return loss across this band make it suitable for wideband receivers and transmitters in cellular and microwave systems. The 117355-HMC626LP5 maintains specified performance including ±0.25 dB gain step accuracy and +36 dBm OIP3 throughout the full range.

Does the 117355-HMC626LP5 require external matching components?

No, the 117355-HMC626LP5 requires no external matching components due to its internally matched 50 Ω I/O architecture. It integrates all necessary biasing and stabilization circuitry, with only external DC-blocking capacitors (on RFin/RFout) and AC-ground capacitors (on ACG1–ACG7) needed for operational flexibility. This simplifies layout and improves reproducibility versus discrete amplifier designs.

What supply voltage and current does the 117355-HMC626LP5 use?

The 117355-HMC626LP5 operates from a single +5 V supply, drawing 176–225 mA depending on gain state and temperature. Its absolute maximum Vdd rating is +5.5 V, and it supports TTL/CMOS-compatible control voltages (0–0.8 V low, 2–5 V high). The 117355-HMC626LP5's low supply sensitivity ensures stable gain control across typical board-level rail variations.

How is gain controlled on the 117355-HMC626LP5?

The 117355-HMC626LP5 uses six parallel digital control lines (V1–V6) to set gain in 0.5 dB steps over a 31.5 dB range. Each bit corresponds to a specific gain increment (0.5 dB to 16 dB), and combinations sum to the total relative gain setting. The 117355-HMC626LP5 truth table defines exact bit states for each setting, with ±0.25 dB typical step error referenced to maximum gain.

Is the 117355-HMC626LP5 RoHS compliant?

Yes, the 117355-HMC626LP5 is RoHS compliant with Sn/Pb lead finish and MSL1 rating (max reflow 235 °C). It meets JEDEC J-STD-020 moisture sensitivity requirements and is qualified for industrial temperature operation (-40°C to +85°C). The 117355-HMC626LP5 package uses low-stress injection-molded plastic and copper alloy leadframe for thermal and mechanical reliability.