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DAC60501: Accuracy Check

Yuxi Liu(Tony)
Expert 3150 points
Part Number: DAC60501

Tool/software:

Hi TIer

Can DAC60501 satisfy 0.1% accuracy over the full output range?

Thank you very much.

  • 0
    TI__Mastermind 42113 points

    Hi Tony,

    The DAC itself has 0.1% max TUE over the whole range. The reference will have additional error. It is 0.1% initial error and 10ppm/C drift. You can use an external reference with smaller error and drift. 

    Best,

    Katlynne Joes

  • 0 in reply to Katlynne Jones
    TI__Expert 3150 points

    Hi Katlynne

    You mean customer have to use external reference to get high accuracy?

    We have internal reference in DAC60501 , Do we calculate the initial error and drift in TUE in datasheet?

    I don't see this error include in TUE calculate formula.

    Customer more prefer use internal reference.

    Could you help me check?

    Thank you very much.

  • 0 in reply to Yuxi Liu(Tony)
    TI__Mastermind 42113 points

    Hi Tony,

    In our datasheets TUE is always calculated without the internal reference. The TUE we measure is a reflection of the DAC performance. 

    Our internal reference is 0.1% initial accuracy (at room temp) with 10ppm/C drift. You could add the reference error to our TUE number by TUE+ref = sqrt(0.001^2+0.001^2) = 0.141%. You could also include the drift. 

    If you can find a better reference, then yes, the total system performance will have better accuracy. 

    Best,

    Katlynne Jones