Hi,
Not sure if this will help or not, but just saw this on the SILabs forum posted by an employee:
The Si5351 parts can be configured many different ways and can?have very different spurious and crosstalk performance for the same output frequencies rearranged on?different output pins.
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The Si5351 Clock Builder software runs an algorithm to?arrange the different output frequencies?to?optimize performance and should be used when defining the device output pins. It is possible to override the optimal output frequency placement created by the Si5351 Clock Builder software, but this can possibly reduce jitter performance compared to the optimal placement.
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The best option to understand the Si5351 spurious performance for your application is to use the Si5351 Clock Builder software to design an ouput?configuration and then submit that design file?in a technical?support request along with a description of what performance parameters are most important for the system. Si5351 performance for those parameters in that specific configuration can then be measured by SiLabs application engineers.
73,
Mark.
