HMC812LC4TR

Attenuators Overview

The HMC812LC4TR is a GaAs MMIC absorptive voltage-variable attenuator from Analog Devices, operating within the 5 GHz to 30 GHz frequency range. It features a 24-lead QFN package and supports a control voltage range of -3 V to 0 V. The device provides typical attenuation up to 35 dB with an insertion loss of approximately 2.5 dB. Designed for surface-mount applications, it handles RF input power up to 25 dBm and functions reliably across temperatures from -40°C to +85°C.

Attenuators Feature Summary

• Absorptive architecture ensures high isolation and stable impedance matching across the operational bandwidth
• Voltage-controlled attenuation allows precise analog adjustment via DC bias signals
• GaAs MMIC construction enables compact form factor with robust performance at millimeter-wave frequencies

Attenuators Applications

• Test and measurement instrumentation requiring variable signal attenuation
• Wireless communication systems needing dynamic gain control
• Radar systems utilizing adjustable signal levels for calibration or processing

Attenuators Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS compliance status and moisture sensitivity level (MSL) prior to assembly. Ensure storage conditions meet humidity requirements to prevent package degradation. Cross-reference ordering suffixes to confirm exact reel specifications and tape-and-reel dimensions.

Attenuators Selection Notes

Select this component when wideband attenuation from 5 GHz to 30 GHz is required in a small footprint. Consider the -3 V to 0 V control range compatibility with system logic levels. Evaluate thermal management needs given the QFN package and power dissipation characteristics. Compare against other VVA options if specific linearity or phase shift metrics are critical.

Attenuators Part Context

This part belongs to the HMC812 series of voltage-variable attenuators by Analog Devices. It shares functional similarities with other members like the HMC812ALC4TR but may differ in specific electrical parameters or packaging variants. The LC4 suffix denotes the LGA/QFN package style used for surface-mount integration.

Attenuators Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Verify pinout and parameter compatibility before considering any alternative components.