PE43601MLI-Z

Overview

The PE43601MLI-Z is a HaRP-enhanced, high linearity, 6-bit RF Digital Step Attenuator (DSA) manufactured by pSemi. It provides a variable attenuation range of 0 dB to 15.75 dB in 0.25 dB steps across a frequency range of 9 kHz to 6 GHz. The device features a serial-addressable CMOS control interface and maintains high attenuation accuracy over frequency and temperature. It exhibits very low insertion loss and low power consumption, with performance stability unaffected by supply voltage variations due to an on-board regulator. The component is built using UltraCMOS technology on a sapphire substrate.

Feature Summary

• HaRP-enhanced high linearity design for superior signal integrity
• Serial-addressable CMOS control interface for easy integration
• Stable performance maintained over varying frequencies and temperatures
• On-board regulator ensures consistent operation regardless of supply voltage

Applications

• Wideband RF systems requiring precise attenuation control
• Test and measurement equipment needing accurate step attenuation
• Communication infrastructure components demanding high linearity
• Mobile device front-end modules utilizing digital control interfaces

Procurement Notes

Verify the current part status as the PE43601MLI-Z is listed as obsolete in multiple distributor databases. Confirm availability of replacement parts such as the PE43712 if procurement is required for new designs. Ensure that ordering suffixes do not alter functional specifications unless explicitly documented by the manufacturer. Cross-reference datasheets from official sources to validate technical parameters before finalizing purchase orders.

Selection Notes

Select this component for applications requiring a 6-bit resolution with 0.25 dB step size up to 15.75 dB total attenuation. It is suitable for systems operating between 9 kHz and 6 GHz where CMOS compatibility is necessary. Consider the 32-lead QFN package for space-constrained designs. Evaluate the need for high linearity and low insertion loss characteristics specific to the application's signal integrity requirements.

Part Context

The PE43601MLI-Z belongs to pSemi’s UltraCMOS and HaRP product series, leveraging patented silicon-on-insulator technology on a sapphire substrate. This family of devices is designed for high-performance RF applications, offering compact footprints and robust electrical characteristics. The component represents a next-generation solution in digital step attenuators, emphasizing precision and reliability in modern wireless communication architectures.

Replacement Considerations

Public documentation indicates the PE43601 should be replaced with the PE43712. Verify pinout and parameter compatibility with the substitute part number before implementation.