The TS3A225E is an audio headset switch device. The device 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 the TS3A225E detects a certain configuration, the device automatically connects the microphone line to the appropriate pin. The device 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. The TS3A225E provides two internal low resistance (<100mΩ) FET switches for ground shorting.
● VDD Range = 2.7 V to 4.5 V
● Break Before Make Stereo Jack Switches
● Ron for Ground FET Switches
● WCSP Package: 70 mΩ
● QFN Package: 100 mΩ
● 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:
● 2000-V Human-Body Model (A114-B, Class II)
● 500-V Charged-Device Model (C101)
● ESD Performance (SLEEVE, RING2, TIP)
● ±8-kV Contact Discharge (IEC 61000-4-2)
