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LM3481: Question about sync

Austin Do
Expert 3275 points
Part Number: LM3481

Tool/software:

Hello team,

If using both R_fa resistor and external clock, is AC coupling cap or buffer needed? Or clock can be directly connected to SYNC pin which is already connected to R_fa?

Best Regards,

Austin

  • +1
    TI__Mastermind 29990 points

    Hi Austin,

    Thanks for using the e2e forum.

    An AC coupling cap or buffer is optional. The datasheet shows a reference where you see the sync signal is directly connected to the pin.

    Please make sure to stay within the abs max limits and recommended frequency range.

    Best regards,
    Niklas