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ADF4154 rev changes or errata?


My customer purchased some ADF4154 PLLs a while ago and performed exactly like the simulation.  Then they purchased a few more and

all parts have higher phase noise on in-loop band and it seems the figure of merit of the new batch is much higher.

I am collecting lot and date code info and I checked the product folder and didn't see any errata listed.  Any ideas that you can share?

Thank you,