HMC346LC3B

Attenuators Overview

The HMC346LC3B is a GaAs MMIC absorptive voltage-variable attenuator designed for operation from DC to 18 GHz. It provides a nominal attenuation of 30 dB with a 50 Ohm impedance interface. The device operates on a single 6 V supply, drawing approximately 100 mA of current. It features a low noise figure of 3 dB and delivers a P1dB compression point of 21 dBm alongside an OIP3 of 36 dBm. The component is housed in a leadless QFN-12 package with an exposed pad, suitable for surface mount applications across a temperature range of -40°C to +85°C.

Attenuators Feature Summary

• Absorptive architecture ensures high isolation and stable performance across the frequency band
• Voltage-controlled attenuation mechanism allows for precise signal level management
• Leadless ceramic SMT package design facilitates compact PCB integration

Attenuators Applications

• RF signal chain conditioning in wireless communication systems
• Test and measurement equipment requiring variable attenuation
• Satellite communication ground stations

Attenuators Procurement Notes

Verify component status carefully as this part may be discontinued or subject to limited availability. Confirm that the specific suffix matches the required package and compliance specifications. Check for valid replacement parts such as the HMC346ALC3B if original supply is unavailable. Ensure procurement channels provide authentic Analog Devices Inc. products with proper traceability documentation.

Attenuators Selection Notes

Select this component when wideband attenuation up to 18 GHz is required within a compact form factor. The absorptive type is preferred over reflective designs for improved port matching and stability. Consider the 6V supply requirement and thermal dissipation capabilities of the QFN-12 package during system design. Evaluate the 30 dB maximum attenuation against specific link budget requirements.

Attenuators Part Context

This component belongs to the HMC346 series of GaAs MMIC attenuators manufactured by Analog Devices Inc. It represents a specialized radio frequency integrated circuit intended for high-frequency applications where precise control of signal amplitude is critical. The technology leverages gallium arsenide properties for superior performance at microwave frequencies compared to silicon-based alternatives.

Attenuators Replacement Considerations

The HMC346ALC3B is documented as a direct substitute for the HMC346LC3B.