HMC941A

Overview

The HMC941A is a broadband 5-bit GaAs IC digital attenuator MMIC die. It operates within a frequency range of 0.1 to 30 GHz, providing a total attenuation value of 15.5 dB. The device features bit weights of 0.5 (LSB), 1, 2, 4, and 8. Typical insertion loss is less than 4 dB. This component is supplied in a die form factor.

Feature Summary

• Broadband operation covering 0.1 to 30 GHz
• GaAs MMIC technology for high performance
• 5-bit digital control with 0.5 dB LSB resolution

Applications

• RF signal chain integration
• Microwave system calibration
• Test and measurement equipment

Procurement Notes

Verify the specific package configuration required for the application, as the HMC941A designation refers to the bare die. Confirm availability status through official Analog Devices channels, as distribution may vary by region and time. Ensure handling procedures for bare semiconductor dies are strictly followed during assembly to prevent damage. Cross-reference part numbers carefully to distinguish between the die version and packaged equivalents like the HMC941ALP4ETR.

Selection Notes

Select the HMC941A when a bare die solution is necessary for custom RF front-end designs requiring wide bandwidth up to 30 GHz. Consider the 5-bit resolution and 0.5 dB LSB step size for precise attenuation control needs. Evaluate thermal management and mounting requirements suitable for bare die implementation versus packaged alternatives if surface-mount convenience is preferred.

Part Context

The HMC941A belongs to the HMC941 family of digital attenuators from Analog Devices. It serves as the foundational die component for this product line. Packaged versions, such as the HMC941ALP4ETR, utilize this same underlying MMIC technology but include additional packaging structures for easier integration into standard PCB layouts.

Replacement Considerations

The HMC941ALP4ETR is a packaged equivalent using the same core technology. Verify compatibility if transitioning from die to surface-mount package.