0 Replies Latest reply on Oct 21, 2013 7:38 AM by wolfgang.kopp

    CY22150: external clock vs. crystal input in terms of jitter

    wolfgang.kopp

      Hi,

         

      I've a simple question regarding CY22150, to which I wasn't able to find a solution in datasheets, forum nor knowledge-base.

         

      In our design, we want to minimize the period jitter of CY22150's outputs to a minimum.  I've found that we have to raise VCO frequencies, but can you tell me if it is (in terms of jitter performance) better to use

         
            
      • an external, low-jitter clock as a reference
      •     
      • or a crystal input
      •     
      • or no difference between both options?
      •    
         

      Are there other things or settings we have to take into account to minimize the output jitter?

         

       

         

      Thanks a lot,

         

      bye, Harald