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TPS7A78: TPS7A78

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Part Number: TPS7A78

Hello.

Why the PSRR and Noise graphes stop at 10Mhz? Can I get the data up to 200MHz?

Thanks

Shlomo

  • Hi Shlomo,

    PSRR is very difficult to measure beyond 10MHz. And actually, beyond 100kHz-1MHz, the bandwidth of the error amp is not doing anything to attenuate PSRR. This is mostly the output capacitor and any additional filtering you may want to add.  If noise in the 100-200MHz range is a concern, one way to mitigate this might be to use a ferrite bead in the form of a pi filter. 

    I hope this answers your question.

    John Cummings 蔣康明
    Texas Instruments 德洲儀器
    Johncummings@ti.com

    Please click the "Resolved" link at the bottom of this post if I have answered your question.

    Thank you,

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