HMC941LP4ETR

Overview

The HMC941LP4ETR is a monolithic RF attenuator manufactured by Analog Devices Inc., designed for high-frequency applications. It operates within a frequency range of 100 MHz to 30 GHz and features a 24-VFQFN package with exposed pad. The device provides an attenuation step size of 0.5 dB, achieving a maximum attenuation value of 15.5 dB. It functions at a nominal impedance of 50 Ohms and is rated for operation between -40°C and +85°C.

Feature Summary

• Integrates a 0.5 dB least significant bit resolution for precise signal control
• Supports ultra-wideband operation from 100 MHz up to 30 GHz
• Delivers a total attenuation range reaching 15.5 dB in a compact surface-mount form factor

Applications

• Calibration networks requiring fine-grained signal adjustment
• Test and measurement instrumentation systems
• Phased array radar subsystems

Procurement Notes

Verify the specific suffix against official Analog Devices documentation to confirm pinout compatibility and thermal pad requirements. Ensure the procurement channel sources genuine components to maintain signal integrity specifications. Cross-reference the 24-VFQFN package dimensions with the target PCB layout to guarantee proper soldering and heat dissipation performance.

Selection Notes

Select this component when designs demand sub-decibel precision over a multi-gigahertz bandwidth. The integrated architecture eliminates external passive components, reducing board space. Consider the thermal characteristics of the exposed pad for effective heat management during continuous high-power operation within the specified temperature range.

Part Context

This part belongs to the HMC941 family of digital step attenuators. It utilizes advanced silicon technology to provide reliable performance in demanding RF environments. The series is engineered for consistency across wide frequency spans, supporting complex signal chain architectures that require accurate amplitude modulation without introducing significant distortion or noise.

FAQ

What is the minimum attenuation step size?

The device offers a fixed least significant bit step size of 0.5 dB.

Does the part include control logic?

Yes, it integrates the necessary control circuitry for digital step attenuation within the single chip.