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AD9850 - seperate AVDD DVDD

Question asked by rhermes on Apr 17, 2013
Latest reply on Apr 19, 2013 by rhermes

What is the maximum voltage difference allowed between AVDD and DVDD with an AD9850?

I would like to use DVDD = 3.3V, AVDD = 5V.

 

Is there a list of which pins are referenced to AGND and which are referenced to DGND?

 

Final question - is it worth the effort to use seperate supplies? 

I'm using this in a 30-88MHz radio and the current design uses a single supply for the 9850.

 

Thanks

Randy

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