PE43703MLI-Z

Overview

The PE43703MLI-Z is a 7-bit digital step attenuator from pSemi, offering a total attenuation range of 31.75 dB with a 0.25 dB step size. It operates within a frequency range of 9 kHz to 6 GHz and maintains a 50 Ohm impedance. The device features an insertion loss of 2.4 dB and functions on a 5.5 V supply voltage. Packaged in a 32-lead QFN (5x5 mm) footprint, it supports SMD/SMT installation and operates between -40°C and +85°C.

Feature Summary

• UltraCMOS technology for high linearity and low power consumption
• Serial-addressable CMOS control interface
• On-board regulator ensures performance stability against voltage variations

Applications

• Wireless communication systems
• RF test and measurement equipment
• Base station signal conditioning

Procurement Notes

Verify the specific suffix 'Z' indicates RoHS compliance and lead-free status as per manufacturer specifications. Confirm the package type matches the 32-VFQFN exposed pad requirement for your PCB layout. Ensure the operating temperature range aligns with your environmental design constraints before finalizing procurement orders.

Selection Notes

Select this component when a wide dynamic range up to 31.75 dB is required at frequencies up to 6 GHz. It is suitable for designs needing precise 0.25 dB resolution and low insertion loss. Consider the 5.5 V supply requirement and serial control interface compatibility with your system's microcontroller or logic levels.

Part Context

This part belongs to the HaRP-enhanced UltraCMOS family of digital step attenuators. It utilizes silicon-on-insulator technology on a sapphire substrate to achieve high performance. The series provides versatile RF attenuation solutions with consistent accuracy over frequency and temperature variations.

Replacement Considerations

The PE43704B-Z is a documented substitute variant within the same product family, offering similar attenuation characteristics but potentially differing in specific operational parameters or packaging details.