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How to set the volume for automatic mute judgment?

Tom Chang
Prodigy 200 points
Part Number: TAS5822M


Dear Sir,

We designed Class-D AMP with TAS8522m, which needs to save power when there is no audio input. Therefore, we have enabled the automatic mute function, so how to set the automatic mute volume of the judger to avoid the misoperation of noise interference?

Thank you very much.

Tom

  • 0
    TI__Guru 51380 points

    Hi Tom

        This function can't be set, you must keep the SDIN completely zero to trigger the auto mute.

        Additionally, this function also has no help to save the power. The DSP will also in full power and the Mosfet is still switching in mute. So this function is rarely used actually. 

        To save more power, we usually set the device into Hi-Z state. It needs your system to control, can't be realized by our device alone.

  • 0 in reply to Shadow He
    Prodigy 200 points

    Dear Sir,

    Thanks for your quick reply and explanation

    Tom