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TPA6112A2 POP noise when shutdown

PHILIP HSU
Expert 1900 points
Other Parts Discussed in Thread: TPA6112A2, TPA6132A2

Hi Bros,.

we faced a problem with TPA6112A2 POP noise when shutdown, circuit as attachements

"SHUNTDOWN2" was connected to 5V , S? just the switch to simulate actives , they don`t tied in the same time 

could you direct me solurion please ? thank you1261.6112A2 circuit.pdf

  • 0
    TI__Guru**** 189401 points

    Hi, Philip,

    This is an older device, and the pop performance is good, but not perfect.

    You may be able to improve it by playing with the component ratios as described in the section, "MIDRAIL BYPASS CAPACITOR, C(B)" of the d/s.

    If possible, I'd recommend changing to one of our new DirectPath(tm) HP amps like TPA6132A2 which has NO pop. It's AWESOME!!!

    -d2