XLF-63+

Overview

The XLF-63+ is a monolithic microwave integrated circuit (MMIC) reflectionless low-pass filter manufactured by Mini-Circuits. It features a cutoff frequency of 8.1 GHz and operates within a 50Ω system impedance. The device utilizes a novel topology that absorbs stop-band signals internally, eliminating the need for external termination resistors. It is housed in a compact 12-VQFN exposed pad surface-mount package with an insertion loss of 1.6 dB.

Feature Summary

• Employs a reflectionless MMIC topology that internally absorbs and terminates out-of-band signals to prevent signal reflection.

Applications

• RF front-end filtering in communication systems
• Signal conditioning in test and measurement equipment
• Integration into multi-module dynamic control assemblies

Procurement Notes

Verify the specific suffix against official documentation, as variants such as XLF-63-DG+ or XLF-63H+ exist with distinct specifications. Confirm the package type matches the required PCB footprint. Ensure environmental ratings align with operational requirements before finalizing procurement orders.

Selection Notes

Select this component when internal signal absorption is critical to maintain system stability without adding passive terminations. The 12-VQFN package suits space-constrained designs requiring surface-mount integration. Validate that the 8.1 GHz cutoff meets the specific spectral requirements of the application.

Part Context

This component belongs to the XLF series of reflectionless filters from Mini-Circuits, designed to replace traditional LC filters that reflect energy. It serves as a building block for RF systems requiring clean signal paths without reflected power interference.

Replacement Considerations

Direct substitutes include the XLF-63-DG+ and XLF-63H+. Verify electrical parameters and package compatibility before substitution.

FAQ

How does the XLF-63+ handle stop-band signals?

It uses a reflectionless topology that absorbs and terminates stop-band signals internally rather than reflecting them back to the source.

What is the cutoff frequency of the XLF-63+?

The specified cutoff frequency for the XLF-63+ is 8.1 GHz.