AD7609 - Powering from ADuM5400

Customer has questions regarding powering the AD7609 via the ADuM5400.

The ADC (7609) requires a 5V analog PLUS a 5V or 3.3V Digital power signal. The ADuM5400 series only supplies a single output (as configured),but can certainly source enough power to power the AD7609. 

1) Is this 5V output clean enough to operate the ADC converter for the analog power input?  I couldn’t find any reference to p-p noise on the output.

2) Could we revert to the 10 Ohm resistor plus a couple of caps between the analog and digital supply so we could get by with a single supply to operate both inputs?  Or would you recommend two separate supplies?

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