HMC629A

RECOMMENDED FOR NEW DESIGNS

3 dB LSB GaAs MMIC 4-Bit Digital Attenuator, DC - 10 GHz

Analog Devices HMC629A Product Info

10 February 2026 6

Features

3 dB LSB steps to 45 dB
Power-up state selection
Low insertion loss: 2.25 dB
TTL/CMOS compatible, serial, parallel or latched parallel control
±0.25 dB typical step error
Single +3V or +5V supply
24 lead 4x4mm SMT package: 16mm²

Part details & applications

The HMC629ALP4E is a broadband 4-bit GaAs IC Digital Attenuator in a low cost leadless SMT package. This versatile digital attenuator incorporates off-chip AC ground capacitors for near DC operation, making it suitable for a wide variety of RF and IF applications. The dual mode control interface is CMOS/TTL compatible, and accepts either a three wire serial input or a 4-bit parallel word. The HMC629ALP4E is housed in a RoHS compliant 4x4 mm QFN leadless package, and requires no external matching components.

Applications

Cellular/3G infrastructure
WiBro / WiMAX / 4G
Microwave radio & VSAT
Test equipment and sensors
IF & RF applications

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