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TPA3251: TPA3251

user5959647
Intellectual 960 points
Part Number: TPA3251

TPA3251D2 cannot reduce output noise in SE 2.1 mode. Please listen to the audio file recorded in the attachment.

PIN15 C_ We made a lot of adjustments to START, but it was useless.

Is there any way to reduce the noise of this on-off machine.

TPA3251D2 2.1模式开关机噪音.m4a

  • 0
    TI__Mastermind 37050 points

    Hi

       I'm afraid this is a known defect of SE modulation. During power up and off, the OUTPUT trace need to set up or discharge voltage. SE modulation would put this voltage change directly across speaker, and you would hear this noise. That's way our newer device doesn't support SE using anymore.