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Audio configuration switch IC detects headset type

Posted: 15 Jun 2012     Print Version  Bookmark and Share

Keywords:audio  headset  audio codec 

Texas Instruments debuts the TS3A225E audio headset detection and configuration switch IC that integrates automatic detection and switching function in a single device thus eliminating detection, leakage and click-pop issues.


The chip works seamlessly to extend the functionality of best-in-class TI audio codecs, such as TLV320AIC3262 and TLV320AIC3212. For designers who prefer only a 2x2 crosspoint switch functionality without headset-type detection, TI also offers the reduced-cost TS3A26746E.

The device enhances the end user's experience by supporting three-prong (without microphone) and four-prong (with microphone) audio headsets from all manufacturers. It detects the configuration of the microphone and ground pins on a four-prong headset and routes them appropriately via a 2x2 crosspoint switch.

The IC also prevents audio signal distortion with 66 per cent lower on-resistance (100mΩ) for the ground switch compared to the competition. It comes in both 16-pin QFN and WCSP packages.

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