Product details

Configuration audio jack Features Autonomous headset MIC/GND detection (3 or 4 pole), Integrated Codec Sense Line, Manual I2C Control Supply voltage (Min) (V) 2.7 Supply voltage (Max) (V) 4.5 Supply current (Typ) (uA) 8 Operating temperature range (C) -40 to 85
Configuration audio jack Features Autonomous headset MIC/GND detection (3 or 4 pole), Integrated Codec Sense Line, Manual I2C Control Supply voltage (Min) (V) 2.7 Supply voltage (Max) (V) 4.5 Supply current (Typ) (uA) 8 Operating temperature range (C) -40 to 85
DSBGA (YFF) 16 0 mm² 1.6 x 1.6 WQFN (RTE) 16 9 mm² 3 x 3
  • 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)
  • 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)

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.

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Technical documentation

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Type Title Date
* Data sheet Autonomous Audio Headset Switch datasheet (Rev. A) 29 May 2013
Application note Selecting the Correct Texas Instruments Signal Switch (Rev. D) 09 Dec 2021
Application note CBT-C, CB3T, and CB3Q Signal-Switch Families (Rev. C) 19 Nov 2021
Application note Support Selfie Sticks Using a TS3A227E Audio Jack Switch 04 Mar 2016
Technical article Can you hear me now? Audio jack switches could be the answer. 19 Nov 2014
Application note Preventing Excess Power Consumption on Analog Switches 03 Jul 2008
Application note Semiconductor Packing Material Electrostatic Discharge (ESD) Protection 08 Jul 2004

Design & development

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Simulation model

TS3A225E HSpice (LIN) Model

SCDM145.ZIP (483 KB) - HSpice Model
Simulation model

TS3A225E HSpice (WIN) Model

SCDM146.ZIP (482 KB) - HSpice Model
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Package Pins Download
DSBGA (YFF) 16 View options
WQFN (RTE) 16 View options

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