HMC985ALP4KE

Overview

The HMC985ALP4KE is a GaAs MMIC absorptive voltage variable attenuator operating from 10 to 40 GHz. It provides over 40 dB of dynamic range controlled by analog DC signals. The device features a 50 Ohm impedance and utilizes a 24-lead QFN package with exposed pad.

Feature Summary

• Absorptive attenuation architecture for stable performance
• Analog DC control via dual shunt-type attenuators
• High dynamic range exceeding 40 dB

Applications

• RF signal level control in communication systems
• Test and measurement instrumentation
• Phased array antenna beamforming networks

Procurement Notes

Verify the specific suffix LP4KE against official Analog Devices documentation to confirm the 10-40 GHz frequency range and QFN package configuration. Ensure compatibility with required analog control voltages and thermal management specifications for the exposed pad design before integration.

Selection Notes

Select this component when analog control of RF attenuation is required within the 10-40 GHz band. The absorptive topology offers advantages in isolation compared to reflective types. Verify that the system can accommodate the necessary DC control circuitry for the two independent voltage inputs.

Part Context

This part belongs to the HMC985 series of high-frequency attenuators from Analog Devices. It complements other variants like the HMC985A, which operates at higher frequencies up to 50 GHz, providing options across different millimeter-wave bands for diverse RF design requirements.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Designers should consult Analog Devices directly for current availability and potential alternative components within the same product family.