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ADS8864: ADS8864 - AVDD and VREF

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Part Number: ADS8864

Hi all

Would you mind if we ask ADS8864?

<Question1>
When we use ADS8864 with REF=4V、AVDD,DVDD=3.3V, there is no problem, isn't it?

<Question2>
What is AVDD used on the block diagram?
We could not find where AVDD is used for.
(Is it used for Sampling or Hold circuit?)

Kind regards,

Hirotaka Matsumoto

  • Hi Hirotaka-san,

    1) DVDD, AVDD and VREF are independent nodes in ADS8864. Your configuration will work fine.
    2) The analog core of the device is powered by AVDD.

    Which reference driver are you planning to use with this device? We recommend using REF6041 which is a voltage reference with integrated buffer capable of driving SAR-ADCs.

    Regards,
    Rahul

    Regards,
    Rahul

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