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Question asked by nitin@anglia on Sep 3, 2015
Latest reply on Aug 17, 2016 by kalupen

I am looking at using a DDS to provide the reference to a PLL. The PLL (ADF4355) will act as a simple multiplier for the DDS output. I want to use the internal VCOs of the ADF4355 and its output dividers. What I want to know is how does the ADF4355 select the its VCOs under these conditions and does it mean that I need to reprogram the ADF4355 every time I change the DDS frequency even though I am programming the same division ratio into the ADF4355 each time?