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AD9954 OSK

Question asked by grigvlad on Dec 12, 2017
Latest reply on Dec 14, 2017 by mcee

I am using AD9954 DDS and trying to build pulse shape, so that amplitude will rise up from 0 to 3FFF in steps. Analysing the datasheet, I see that amplitude step can be 1,2,4 or 8 only, which are very limited values, since making full loop of 14 bit counter will take up to 50usec even with the largest amplitude step.  it is very long time and not suitable for fast rate applications.

Are there any options to set large amplitude step or alternatively set starting value of amplitude counter rather than 0?

he requirement is to make the rise