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Original question:

TPA2013D1 amplifier no output signal

TPA2013D1: TPA2013D1 shutdown pop

chris idle
Prodigy 80 points
Part Number: TPA2013D1

Hi 

I am using a TPA2013D1 in an application and controlling the amplifier by connecting both the SDD and SDB shutdown pins together and controlling them from my micro.

My issue is that whenever i place the amplifier into shutdown, i get a large click or pop at the speaker. The speaker is a 8R 10W speaker.

The amplifier is fed from the output of a DAC which plays a wav file. I have tried leaving the output of the DAC constant for a while before shutting down the amplifier, but the problem still appears. 

Is there anything else i can try to eliminate the pop?

Thanks

  • 0
    TI__Mastermind 20085 points
    Hi Chris,

    We always recommend setting a low volume or don't send an input signal if this is possible when the shutdown pins are asserted. Something that could help to reduce the pop noise is the input capacitors selection, so Which values are you using? and Could you provide me a schematic of your application?

    Best Regards
    José Luis Figueroa
    Audio Applications Engineer
  • 0
    TI__Mastermind 20085 points
    Hi Chris,

    I haven't heard back from you. I am assuming that you were able to resolve your problem. If no, just answer the questions that I did you or create a new post if this was locked due to time-out.

    Best Regards
    José Luis Figueroa
    Audio Applications Engineer