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How to synchronize the two outputs of AD9959 in frequency sweep mode?

Question asked by ADI_Wei on May 14, 2015
Latest reply on May 17, 2015 by ADI_Wei

As we know, the four DDS in the AD9959 are internal synchronized. When output the two sin wave, the two outputs are able to keep phase synchronized. But when configure the two channels in the same frequency sweep mode, and connect the frofile pins P0 and P1 together to implement the sync frequency sweep, the phase can synchronized for a while but can't keep synchronized some time later. Could you please help give some comments on this issue? Thanks.