PE43701MLI-Z

Overview

The PE43701MLI-Z is a high-linearity, 7-bit RF Digital Step Attenuator (DSA) manufactured by pSemi. It operates within a frequency range of 9 kHz to 6 GHz and provides an attenuation range from 0 dB to 31.75 dB in 0.25 dB steps. The device features a 50 Ω characteristic impedance and utilizes a serial-addressable CMOS control interface. Packaged in a 32-lead QFN footprint measuring 5x5 mm with a height of 0.85 mm, it is designed for applications requiring precise signal level control.

Feature Summary

• Provides 7-bit digital step attenuation with 0.25 dB resolution across a wide frequency spectrum
• Utilizes HaRP-enhanced UltraCMOS technology on a sapphire substrate for high linearity and performance stability
• Features a serial-addressable CMOS control interface for easy integration with digital systems
• Maintains consistent attenuation accuracy over varying temperature conditions

Applications

• Wireless infrastructure equipment
• Test and measurement instruments
• RF front-end modules
• Base station beamforming networks

Procurement Notes

Verify the specific ordering code suffix to ensure compliance with environmental standards such as RoHS. Confirm that the package dimensions match the required PCB layout constraints. Ensure the supply chain source is authorized to guarantee component authenticity and traceability. Check for any specific handling requirements related to the exposed pad thermal design.

Selection Notes

Select this component when a 7-bit resolution is required for fine-grained signal attenuation up to 31.75 dB. It is suitable for designs needing operation up to 6 GHz with low insertion loss characteristics. Consider the 32-lead QFN package for compact board space requirements. Ensure the system supports the necessary CMOS serial control logic for programming attenuation states.

Part Context

This part belongs to the Peregrine series of RF Digital Step Attenuators. It represents a next-generation solution utilizing patented UltraCMOS silicon-on-insulator technology. The device is designed to replace traditional analog attenuators in modern RF systems where digital control and high linearity are critical for signal integrity.

Replacement Considerations

The PE43501MLI-Z is a documented substitute offering similar functionality with a 5-bit configuration. Verify compatibility regarding the maximum attenuation range and control interface requirements before substitution.

FAQ

What is the control interface type for the PE43701MLI-Z?

It uses a serial-addressable CMOS control interface.

What is the minimum operating frequency?

The minimum operating frequency is 9 kHz.