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AD9914 phase control

Question asked by e.charre@synopsisgroup.com on Dec 11, 2015
Latest reply on Dec 11, 2015 by KennyG

Hello,

 

AD9914 phase resolution seems to be 16 bits, as it is written in 1st paragraph of datasheet AD9914 rev.D.

But in this document, page 19 of 48, the equation of deltaPhi is 2 * Pi / 2^14, is it an error ? It should be 2*Pi/2^16 no ?

On the same page, figure 30, phase control offset is 16 bits wide at the diagram input, but it is only 14  bits at the additionner input ! Is it the same error ?

Thank you in advance.

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