FSA8039AUMSX-ON

Audio Special Purpose Overview

The FSA8039AUMSX-ON is an audio jack interface solution from onsemi (formerly Fairchild Semiconductor) designed for detecting and managing connections in mobile devices. It features integrated moisture sensing to prevent false detection of accessories due to water or humidity. The device supports both 3-pole and 4-pole audio jacks, handling send/end key detection and microphone bias switching. It operates within a supply voltage range of 2.5V to 4.5V and is housed in a compact 10-UMLP package.

Audio Special Purpose Feature Summary

• Integrated Audio Jack Interface Solution with Moisture Sensing
• Supports 3-pole and 4-pole accessory detection
• Prevents false detection due to moisture
• Supply Voltage: 2.5 V to 4.5 V
• I/O Voltage: 1.6 V to VDD
• Low THD (MIC): 0.01% Typical
• High ESD Protection: 15 kV Air Gap
• MIC Switch removes audio jack 'Pop' and 'Click'
• Package: 10-UMLP

Audio Special Purpose Applications

• Cellular Phones
• Smart Phones
• Tablets
• MP3 Players
• GPS Devices
• Portable Media Players (PMP)

Audio Special Purpose Procurement Notes

Verify the specific ordering suffix 'UMSX' against official onsemi documentation to confirm package type and tape/reel configuration. Ensure compliance requirements such as RoHS status are confirmed via the manufacturer's current datasheet before procurement.

Audio Special Purpose Selection Notes

Select this component for applications requiring integrated audio jack detection and switching in portable devices. Consider the 10-UMLP package dimensions for PCB layout constraints. Verify that the 2.5V-4.5V supply range aligns with the system power architecture. Note that while often associated with 4-pole jacks, the device explicitly supports 3-pole accessories as well.