PE43670A-Z

Overview

The PE43670A-Z is a high linearity, 7-bit RF Digital Step Attenuator (DSA) from pSemi's UltraCMOS series. It operates within a frequency range of 9 kHz to 4 GHz with a 50 Ohm impedance. The device provides a total attenuation range of 31.75 dB using 0.25 dB step sizes. Key electrical specifications include an insertion loss of 1.9 dB and operation on 3.3 V or 5 V power supplies. It is housed in a QFN-32 package and functions across a temperature range of -40 C to +85 C.

Feature Summary

• High linearity performance for signal integrity
• Digital control interface for precise attenuation steps
• Wide frequency coverage up to 4 GHz
• Dual voltage compatibility for system flexibility

Applications

• RF test and measurement equipment
• Wireless infrastructure systems
• Satellite communication terminals
• Broadband access networks

Procurement Notes

Verify the specific ordering suffix against the manufacturer datasheet to ensure correct packaging and tape/reel specifications. Confirm that the required operating voltage aligns with the supported 3.3 V or 5 V inputs. Check for RoHS compliance documentation if environmental regulations apply to your manufacturing process. Ensure the QFN-32 footprint matches your PCB layout requirements before finalizing procurement.

Selection Notes

Select this component when precise, fine-resolution attenuation is required up to 4 GHz. The 7-bit architecture offers 128 distinct steps, suitable for applications demanding high dynamic range control. Consider the 1.9 dB insertion loss impact on system gain budget. Verify thermal management capabilities for the QFN-32 package under continuous operation conditions.

Part Context

This part belongs to the UltraCMOS family of digital attenuators, designed for robust RF signal processing. It complements other pSemi switches and attenuators by providing high-linearity attenuation in a compact surface-mount form factor. The device integrates CMOS technology to deliver reliable performance in wireless and broadband environments.

Replacement Considerations

No public confirmed substitute part numbers are available in the provided documentation.