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ADS8688: Power-on sequence?

Prodigy 110 points

Replies: 3

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Part Number: ADS8688

Hi

I have a few questions about ADS8688:
1.Does AVDD and DVDD of ADS8688 have power-on sequence requirements?
2.Does AVDD have to be powered by LDO? Or is it possible to use a DCDC converter?
3.If the input is 0-5V or 4-20mA,should I tie the AIN_xGND to AGND?
Thank you !