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TPA3116D2: output

Amy Luo
Expert 6895 points

Part Number: TPA3116D2

Hi team,

TPA3116 output without a speaker, the circuit board can hear the music played. Even if the shielded inductor is removed, music can be heard, but the sound is smaller. How to explain this phenomenon? Is it caused by parasitic components?

Best Regards,
Amy

TPA3116 output without a speaker, the circuit board can hear the music played. Even if the shielded inductor is removed, music can be heard, but the sound is smaller. How to explain this phenomenon?

  • 0
    TI__Genius 9995 points

    Hi Amy,

    As you may know, TS mode of the speaker can be regarded as below:

    Inductor's circuit is removed and the voice can still be heard, can you check whether customer's circuit has similar circuit model as above.


    BR.

    Alix Wan