PE43705B-Z

Overview

The PE43705B-Z is a 7-bit RF digital step attenuator (DSA) utilizing pSemi's UltraCMOS and HaRP technologies. It operates within a frequency range of 50 MHz to 8 GHz with a nominal impedance of 50 Ohms. The device provides a total attenuation range from 0 dB to 31.75 dB, featuring a resolution of 0.25 dB per step. Packaged in a 32-VFQFN exposed pad configuration, it supports an operating temperature range of -40°C to +85°C.

Feature Summary

• HaRP technology-enhanced CMOS architecture for high reliability
• Digitally controlled 7-bit resolution for precise attenuation steps
• Wideband operation covering 50 MHz to 8 GHz

Applications

• 3G/4G wireless infrastructure systems
• RF signal path management
• Test and measurement equipment

Procurement Notes

Verify the specific ordering suffix against the manufacturer datasheet to ensure compatibility with required packaging options such as cut tape or reel quantities. Confirm that the component meets RoHS compliance standards and matches the specified 32-VFQFN package dimensions for your PCB layout requirements before finalizing procurement orders.

Selection Notes

Select this component when a wide bandwidth up to 8 GHz is required alongside fine 0.25 dB resolution steps. The 7-bit control interface offers a balance between complexity and precision. Ensure the design accommodates the exposed pad thermal requirement inherent to the VFQFN package for optimal performance within the specified industrial temperature range.

Part Context

This part belongs to the UltraCMOS series of digital step attenuators from pSemi. It is designed specifically for high-performance applications requiring reliable attenuation control in wireless communication networks. The HaRP technology integration distinguishes it from standard CMOS alternatives by offering enhanced robustness.

Replacement Considerations

EK43705-12 serves as an evaluation kit for the PE43705 core functionality.