TS3A225E Series

100-mΩ audio jack switch with autonomous microphone & ground detection

Catalog

100-mΩ audio jack switch with autonomous microphone & ground detection

Part	Multiplexer/Demultiplexer Circuit	Supplier Device Package	Number of Channels [custom]	Package / Case	Mounting Type	Features	Switch Circuit	Operating Temperature [Max]	Operating Temperature [Min]	Voltage - Supply, Single (V+) [Min]	Voltage - Supply, Single (V+) [Max]
Texas Instruments TS3A225ERTER	2:1	16-WQFN (3x3)	2	16-WFQFN Exposed Pad	Surface Mount	Break-Before-Make I2C	SPDT	85 °C	-40 °C	2.7 V	4.5 V

Catalog

100-mΩ audio jack switch with autonomous microphone & ground detection

Key Features

• VDDRange = 2.7 V to 4.5 VBreak Before Make Stereo Jack SwitchesRon for Ground FET SwitchesWCSP Package: 70 mΩQFN Package: 100 mΩAutonomous Detection of GND and MIC ConnectionsDetection Triggered by I2C or External Trigger PinHDA Compatible MIC Present Indicator1.8V Compatible I2C Switch ControlESD 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)VDDRange = 2.7 V to 4.5 VBreak Before Make Stereo Jack SwitchesRon for Ground FET SwitchesWCSP Package: 70 mΩQFN Package: 100 mΩAutonomous Detection of GND and MIC ConnectionsDetection Triggered by I2C or External Trigger PinHDA Compatible MIC Present Indicator1.8V Compatible I2C Switch ControlESD 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)

Description

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. 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.