FSA8008UMX

Audio Special Purpose Overview

The FSA8008UMX is a single-channel audio/video switch and detection IC manufactured by onsemi (formerly Fairchild Semiconductor). It is designed to detect the insertion of an audio jack and configure the internal microphone biasing or speaker paths. The device operates within a supply voltage range of 1.65V to 3.6V and supports I2C interface control. It is housed in a 10-UMLP (1.4x1.8mm) surface-mount package.

Audio Special Purpose Feature Summary

• Single-channel audio jack detection and configuration switch
• Supply voltage range: 1.65V to 3.6V
• I2C compatible serial interface
• Compact 10-UMLP (1.4x1.8mm) package
• Low standby current (<1µA)

Audio Special Purpose Applications

• Mobile phones and smartphones
• Tablets and portable media players
• Headsets and earbuds
• Consumer audio devices requiring jack detection

Audio Special Purpose Procurement Notes

This part is manufactured by onsemi following its acquisition of Fairchild Semiconductor's semiconductor business. Verify that the component is sourced from authorized onsemi distributors to ensure authenticity. The 'UMX' suffix indicates the specific 10-UMLP tape-and-reel packaging.

Audio Special Purpose Selection Notes

Select this component for applications requiring reliable audio jack presence detection and automatic switching between internal and external speakers/microphones. The low voltage operation (down to 1.65V) makes it suitable for battery-powered portable devices. Ensure the design footprint matches the 10-UMLP (1.4x1.8mm) dimensions.

Audio Special Purpose Part Context

The FSA8008 is part of onsemi's FXL/FSA series of analog switches, specifically optimized for audio path management. It replaces discrete mechanical switches and complex logic circuits with a single integrated solution for detecting headphone insertion and configuring the audio codec inputs/outputs accordingly.