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digital ground and analog ground

Discussion in 'General Electronics Discussion' started by saurabh17g, Apr 7, 2010.

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  1. saurabh17g

    saurabh17g

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    Mar 8, 2010
    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?
     
  2. (*steve*)

    (*steve*) ¡sǝpodᴉʇuɐ ǝɥʇ ɹɐǝɥd Moderator

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    Jan 21, 2010
    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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