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digital ground and analog ground

saurabh17g

Mar 8, 2010
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I am using AD9833 to generate sinewave. They have mentioned about digital supply(DVDD) and analog supply (VDD) to operate IC AD9833 . Both supplies operate at 5V.
do i need to construct two powersupplies for the requirement?
 

(*steve*)

¡sǝpodᴉʇuɐ ǝɥʇ ɹɐǝɥd
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Jan 21, 2010
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Possibly. Maybe not.

What does the datasheet say?

Does your usage correspond to the cases where they recommend separate power supplies?

The spec sheet I looked at does not refer to separate power supplies, but does discuss the issues surrounding the digital and analogue grounds. Page 13 seems to outline the issues.
 
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