HMC941ALP4ETR

Overview

The HMC941ALP4ETR is a broadband 5-bit GaAs digital attenuator from Analog Devices Inc., designed for surface-mount applications. It operates within a frequency range of 100 MHz to 30 GHz, with some documentation citing up to 33 GHz. The device provides a maximum attenuation value of 15.5 dB with a least significant bit (LSB) step size of 0.5 dB. It features an insertion loss of 5 dB and is housed in a 24-VFQFN package with an exposed pad. The component requires a 5 V operating supply voltage and supports a power rating of 25 dBm.

Feature Summary

• Broadband operation covering frequencies from 100 MHz to 30 GHz or higher using GaAs technology
• Digital control interface allowing precise attenuation steps via 5-bit input
• Low insertion loss characteristic suitable for high-frequency signal chain integrity
• Leadless surface mount packaging designed for compact PCB integration

Applications

• VSAT communication systems requiring variable signal attenuation
• Test and measurement equipment needing precise RF signal level control
• Wireless infrastructure components managing signal strength across wide bandwidths
• Phased array antenna systems utilizing digital beamforming networks

Procurement Notes

Verify the specific suffix 'TR' indicates tape and reel packaging when sourcing. Confirm the manufacturer part number matches exactly to ensure compatibility with design files. Check RoHS compliance status as per current regulatory requirements. Ensure storage conditions account for moisture sensitivity level 3 specifications during handling. Validate that the supplier provides official datasheets for technical reference before finalizing orders.

Selection Notes

Select this component when a wide bandwidth extending beyond 30 GHz is required for digital attenuation. Consider the 0.5 dB LSB resolution for applications demanding fine-grained signal adjustment. Evaluate the 24-VFQFN footprint against available board space constraints. Assess the 5 V supply requirement against system power budget limitations. Compare insertion loss specifications against other attenuators if minimal signal degradation is critical.

Part Context

This part belongs to the HMC941 series of broadband digital attenuators manufactured by Analog Devices Inc. It utilizes Gallium Arsenide (GaAs) MMIC technology to achieve performance at microwave frequencies. The device is part of the company's interactive RF signal chain portfolio, often used alongside switches and amplifiers in complex RF front-end designs.

Replacement Considerations

The HMC941ALP4E is the non-reel variant of the same functional component. No direct cross-manufacturer substitutes are confirmed in public documentation. Verify pinout and thermal pad requirements when considering alternative packages within the same family.