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How to synchronize multiple AD9857?

Question asked by sss on Feb 19, 2013
Latest reply on Feb 20, 2013 by Georgy

Hello,

 

I am trying to work with two of AD9857 DDSs in a synchronised way.

 

In order to do that,

at the same time, REFCLK, DATA etc ,

I configure these DDSs performing an automatic synchronisation.

 

The problem I find is that, after powering up them , I see that the phase of that signal has not synchronized.

 

How can I maintain the phase relation of the two outputs , when I will be powering up the two of AD9857 DDSs?

 

Thank you in advance.

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