ZX76-31A-PNS+

Overview

The ZX76-31A-PNS+ is a 5-bit digital step attenuator from Mini-Circuits, operating from DC to 4000 MHz with a 50 Ohm impedance. It provides a total attenuation range of 0 dB to 31 dB in 1 dB steps. The device features serial control inputs and a single positive supply voltage requirement. Key electrical specifications include an insertion loss of 2.5 dB and a power rating of 24 dBm. It is housed in the HK1149 chassis mount case style, designed for robust performance in RF and IF signal processing applications.

Feature Summary

• Five-bit digital resolution enabling precise 1 dB attenuation steps across the full operational bandwidth
• Serial control interface simplifies integration with microprocessors and digital logic systems
• Chassis mount construction ensures mechanical stability and thermal management for high-power environments

Applications

• RF test and measurement instrumentation requiring variable signal levels
• Wireless communication base stations and access points
• Military and aerospace radar systems
• Satellite communication ground stations

Procurement Notes

Verify the specific suffix PNS+ corresponds to the SMA connector variant and chassis mount configuration. Confirm that the serial control logic levels match your system design. Ensure the mounting hardware requirements align with your chassis specifications. Check for RoHS compliance documentation if required by your manufacturing standards. Validate the power handling capabilities against your peak signal conditions.

Selection Notes

Select this model when precise digital control over attenuation is required up to 4 GHz. The 5-bit resolution offers a balance between control granularity and complexity. Consider the chassis mount form factor for applications where board space is limited but thermal dissipation is critical. Compare insertion loss and power ratings against other attenuators in the ZX76 series to ensure compatibility with your system's dynamic range requirements.

Part Context

This component belongs to the ZX76 series of digital step attenuators from Mini-Circuits. The series includes variants with different connector types and mounting styles, such as PPS+ and SPS+. The ZX76-31A-PNS+ specifically denotes the version with SMA connectors and chassis mounting. This family is designed for high-reliability applications in defense, aerospace, and industrial sectors.

Replacement Considerations

Direct substitutes within the same series include ZX76-31A-PPS+ and ZX76-31A-SPS+, which share identical electrical performance but differ in connector type and mounting style. Verify that the alternative variant fits your physical layout and interconnection needs. No cross-brand replacements are confirmed in public documentation.