AD74413R ADC ERROR

Hi,

Kindly share the Offset drift,gain drift, PSRR of AD74413R for analog input and voltage input

Also please let me know by using internal and external reference how rthe accuracy got effected?

Warm regards,

Monisha OM

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  • Hi Monisha, 

    PSRR & accuracy specifications are available in the AD74413R datasheet. You can jump to the relevant spec table for the use case of interest.

    The accuracy specifications are assuming an ideal 2.5V reference. The reference error will have a proportional affect on the accuracy specifications. For example, a 1% error in the reference, will result in an additional 1% error in the full scale range of the DACs & ADC. 

    You will see the effect in the gain error & TUE.

    When using the internal reference, you should consider the accuracy error of the reference as an add-on error to the gain & TUE specifications.

    Thanks,

    Bríde

Reply
  • Hi Monisha, 

    PSRR & accuracy specifications are available in the AD74413R datasheet. You can jump to the relevant spec table for the use case of interest.

    The accuracy specifications are assuming an ideal 2.5V reference. The reference error will have a proportional affect on the accuracy specifications. For example, a 1% error in the reference, will result in an additional 1% error in the full scale range of the DACs & ADC. 

    You will see the effect in the gain error & TUE.

    When using the internal reference, you should consider the accuracy error of the reference as an add-on error to the gain & TUE specifications.

    Thanks,

    Bríde

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