AnsweredAssumed Answered

ADF4001 lock problem - Actual vs Sim

Question asked by ChrisH Employee on Feb 26, 2010
Latest reply on Sep 13, 2010 by dawid.powazynski

I am using the ADF4001 to phase lock a 100 MHz voltage controlled crystal oscillator to a 10 MHz reference frequency. I am not able to lock the PLL hardware but the simulated configuration shows a locked condition. The attached ADIsimPLL file contains the simulation details. The attached Excel file contains the data entered for each register. The data is entered MSB first.

Why doesn't this work (note, if I change the Ref divider to 2 from 1, it works)

 

Also, in using the ADIsimPLL, I couldn't find a way to have it output the register settings. How can I do this?

 

Thanks

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