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Home » NEWEST Products » New by Manufacturer » Texas Instruments » TS3A225E Autonomous Audio Headset Switch - TI
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Texas Instruments TS3A225E Autonomous Audio Headset Switch

TI TS3A225E Autonomous Audio Headset Switch

Texas Instruments TS3A225E is an audio headset switch device that detects the presence of an analog microphone and switches a system analog microphone pin between different connectors in an audio stereo jack. The microphone connection in a stereo connector can be swapped with the ground connection depending on manufacturer. When TI TAS3A225E audio headset switch detects a certain configuration, the device automatically connects the microphone line to the appropriate pin. TI TS3A225E also reports the presence of an analog microphone on an audio stereo jack. In some systems, it is desirable to connect the stereo jack pin to ground. TS3A225E provides two internal low resistance (<100mΩ) FET switches for ground shorting. The device is ideal for use in mobile phones, tablet PCs, and notebook computers.

Features
  • VDD Range = 2.7V to 4.5V
  • Break Before Make Stereo Jack Switches
  • Ground FET Switches (<100mΩ)
  • Autonomous Detection of GND and MIC Connections
  • Detection Triggered by I²C or External Trigger Pin
  • HDA Compatible MIC Present Indicator
  • 1.8V Compatible I²C Switch Control
  • ESD Performance Tested Per JESD 22:
    • 2000V Human-Body Model (A114-B, Class II)
    • 500V Charged-Device Model (C101)
  • ESD Performance (SLEEVE, RING2, TIP)
    • ±8kV Contact Discharge (IEC 61000-4-2)
Applications
  • Mobile Phones/ Tablet PCs
  • Notebook Computers

Functional diagram

Functional diagram

TI Video: TS3A225E Audio Headset Switch Demonstration

  • Texas Instruments
  • Audio
  • Semiconductors|Integrated Circuits|IC-Switch