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TPS7A47: PSRR at higher frequency

Kangbaek Kim
Intellectual 320 points
Part Number: TPS7A47

I want to see how PSRR looks like up to 1GHz.  Is that possible to see?

  • 0
    TI__Expert 4435 points
    Hi Kangbaek,

    The error amp of the linear regulator will run out of gain long before 1 GHz and will be unable to attenuate/reject at high frequencies. We measure PSRR up to 1 MHz or 10 MHz. If you are looking to filter at higher frequency, consider a low pass filter with sufficient attenuation at your frequencies of interest.