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Problem with frequency tuning in ADF5355

Question asked by Andrew_Gorjachev on Jun 24, 2016
Latest reply on Jul 21, 2016 by MRichardson

I was trying to configure ADF5355 on output frequency 5GHz but I have seen output frequency about 4.7GHz.

I have seen divided RF and Ref frequency on MUXOUT which was divided according to R-divider and N-divider (which I have programmed). That’s why I think my program work correctly.

But when CP pin was disconnected to VTune pin I have seen voltage on VTune pin (about 2.8V). VTune wasn’t connecting to any other nets. I confident in that thing.

I can’t understand where is my problem.