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TPA3251: TAS3251

Ian Wang
Mastermind 25095 points
Part Number: TPA3251

Dear Sir,

We check TPA3251 EVM and input circuit is bandpass filter design?

May I know how you calculate to get 100ohms and 100pF in EVM?

Thanks, Ian.

  • 0
    TI__Guru 61380 points
    Ian,

    The 100ohm/100pF filter is simply to filter out very high frequency on the inputs that is well outside of the Audio band.

    There's no specific reason we picked that exact cutoff frequency.

    The filter in the op-amp feedback is mostly for op-amp stability.

    Regards,

    -Adam