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ADS8900B: Question about Power supply sequence

Austin Do
Expert 3395 points
Part Number: ADS8900B


Tool/software:

Hello team,

Is there a specific power supply sequence for RVDD, DVDD, REFIN?

For example, is it possible to apply DVDD and REFIN first and then RVDD after 10ms?

Best Regards,

Austin

  • 0
    TI__Genius 9236 points

    Hi Austin,

    Thanks for your question. This may cause issues as per the datasheet absolute max ratings table, REFIN cannot exceed RVDD (+ 0.3V). So, while you may be able to apply DVDD first, RVDD and REFIN should ramp together to avoid exceeding these ratings:

    Best regards,
    Samiha