Texas Instruments TS3A226EYFFR

Description
The TS3A226E is an audio headset switch that automatically detects 3 or 4pole 3.5mm accessories. For 4pole accessories with a microphone, it also detects the microphone location and routes the microphone and ground signals automatically. The ground signal is routed through lowimpedance ground FETs (60mΩ typical), minimizing impact on audio crosstalk performance. The autonomous detection feature allows users to plug in accessories with different audio pole configurations into mobile devices without requiring software control or complexity. The ground FETs are designed to allow FM signal passthrough, enabling the use of the headset's ground line as an FM antenna in mobile audio applications.

Features
Ground FET switches (60mΩ typical)
Autonomous detection of headset types: 3poles or 4poles (with MIC on SLEEVE or RING2)
Microphone line switches
Supports FM signal transmission through the ground FETs
Reduction of click/pop noise
VDD range: 2.6 V 4.7 V
THD (Mic): 0.002% typical
Low current consumption: 6.5μA typical
±8kV contact discharge (IEC 6100042) ESD performance on SLEEVE and RING2 pins

Applications
Mobile phones / tablet PCs
Notebook / ultrabook computers