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ADC34RF52: Minimum input differential voltage

Kazuki Itoh
Genius 11050 points
Part Number: ADC34RF52


Hi team,

Could you please let me know the clock input (CLKP/M) minimum input differential voltage V_ID of ADC34RF52?

The max. and typ. values are specified in the datasheet, but the minimum value is not specified.

Best regards,

Kazuki Itoh

  • 0
    TI__Mastermind 24010 points

    Kazuki,

    The input is spec'd from 0.3Vpp to 4Vpp.

    See Figure 7-9 of datasheet for performance vs clock amplitude below. I have marked 0.8Vpp to show where it starts to achieve decent performance, however the higher clock level is always better due to higher slew and lower randomness on the sample edge. I would still suggest to operate the device at 2Vpp myself as this will get around 0.4dB better than 1Vpp clock.

    Thanks, Chase

  • 0 in reply to Chase W
    TI__Genius 11050 points

    Hi Chase-san,

    Thank you for your comment.

    But I don't find where the input is spec'd from 0.3Vpp to 4Vpp in the datasheet.

    Could you let me know where it is specified?

    Best regards,

    Kazuki Itoh

  • +1 in reply to Kazuki Itoh
    TI__Mastermind 24010 points

    Kazuki1san, it is in the figure I posted above. We would not show the SNR at down to 0.3Vpp if it did not work. For this reasons we cannot say anything lower will work.

    Thanks, Chase