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TS3A225E audio crosstalk issue

Jacky Chen29
Genius 4735 points
Other Parts Discussed in Thread: TS3A225E, TS3A227E

Hola,

Could someone help to clarify TS3A225E audio crosstalk issue as below,

When sleeve or Ring2 signal through FET2 or FET1 connects to GND, audio crosstalk is 53dB.

When sleeve or Ring2 signal connects to GND directly, audio crosstalk is 70dB.

Can help provide the layout guideline and crosstalk limitation of TS3A225E to me？

Thanks for your help.

 

  • 0
    TI__Mastermind 45565 points

    Jacky,

    To help my understanding of your test do you have a diagram of your test set up and screen shots?

    The TS3A225E has the isolation and channel separation characteristics state in the datasheet below. 

    If you look at the bottom of our newer audio jack switch TS3A227E datasheet you can see a section with layout guidelines and layout examples on pages 48 and 49.  

    Thank you,

    Adam