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Original question:

FDC2112: FDC2112. I2C bus no ACK

FDC2112: support 40Mhz as input ref

Jason Shen
Intellectual 1945 points
Part Number: FDC2112

Dears

We have a design used the 40Mhz as the Fref, want to have a discussion for the risk, thanks.

Jun Shen

  • 0
    TI__Expert 8930 points

    Hello Jun,

    A reference frequency of 40 MHz in multi-channel mode is within datasheet specifications. However, in single-channel mode the reference frequency must be less than or equal to 35 MHz.

    Please see Table 1 - Clock Configuration Requirements:

    Best regards,

    Nicole