PE43703MLI

Overview

The PE43703MLI-Z is a 50-ohm RF Digital Step Attenuator manufactured by pSemi. It features 7-bit control with an attenuation range of 31.75 dB and operates from 9 kHz to 6 GHz. The device utilizes UltraCMOS technology and is housed in a 32-pin VFQFN package with an exposed pad.

Feature Summary

• Ultra-broadband operation covering frequencies from 9 kHz to 6 GHz
• 7-bit digital step attenuation capability for precise signal control
• Integrated UltraCMOS technology for low power consumption

Applications

• RF signal conditioning in communication systems
• Test and measurement equipment requiring variable attenuation
• Wireless infrastructure components

Procurement Notes

Verify the specific suffix (e.g., -Z) against official datasheets to confirm frequency range and package details, as variants may differ. Ensure compatibility with 50-ohm system impedance requirements. Confirm RoHS compliance status if required for your application. Cross-reference the manufacturer part number with authorized distributors to avoid counterfeit components.

Selection Notes

Select this component when broadband coverage down to 9 kHz is necessary alongside high-frequency performance up to 6 GHz. The 7-bit resolution provides fine attenuation steps suitable for precision applications. Consider the 32-VFQFN package size for space-constrained PCB layouts. Verify thermal dissipation needs due to the exposed pad design.

Part Context

This part belongs to the UltraCMOS family of digital attenuators from pSemi. It shares architectural similarities with models like PE43704 but offers a specific 6 GHz upper frequency limit compared to other variants. The series is designed for integration into modern RF front-end modules requiring compact, digitally controlled attenuation solutions.

Replacement Considerations

PE43703B-Z is a similar 7-bit attenuator with a DC-4.0 GHz range. PE43704DS offers an optional VssEXT bypass mode and extends to 8 GHz. Verify pinout and control logic compatibility before substituting.