XLF-122+

Overview

The XLF-122+ is a reflectionless low-pass filter manufactured by Mini-Circuits. It employs a novel topology that absorbs and terminates stop-band signals, eliminating the need for external terminations. The component features a cutoff frequency of 1.51 GHz and operates within a bandwidth defined by an insertion loss of 1.8 dB. It is housed in a compact 12-VQFN package with an exposed pad, designed for high-performance RF applications requiring signal conditioning without reflected energy.

Feature Summary

• Reflectionless design that absorbs and terminates stop-band signals
• Novel filter topology eliminates need for external terminations
• Low-pass filtering capability with specified cutoff frequency

Applications

• RF signal conditioning
• Frequency upconverter assemblies
• S-band system components

Procurement Notes

Verify the exact part number suffix against official Mini-Circuits documentation to ensure correct specifications. Confirm package type and electrical parameters match application requirements before procurement. Check for availability of the standard plus version versus die variants if applicable.

Selection Notes

Select this component when reflectionless performance is critical to prevent signal distortion from stop-band reflections. Ensure the 1.51 GHz cutoff aligns with the desired passband. Consider the 12-VQFN package constraints for PCB layout and thermal management during integration.

Part Context

This component belongs to Mini-Circuits' XLF series of reflectionless filters. These devices utilize unique topology to absorb out-of-band energy internally. The series includes various cutoff frequencies and package options, such as the XLF-421+, catering to diverse RF filtering needs across different frequency bands.

Replacement Considerations

Official substitutes include other models within the Mini-Circuits XLF series, such as the XLF-421+. Verify that alternative parts maintain the reflectionless characteristic and meet the specific cutoff frequency and package requirements of the original design.