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ADF4350 phase adjust

Question asked by Bagoj on Feb 20, 2013
Latest reply on Mar 7, 2013 by icollins



I'm a bit confused about the phase adjust possibility in the ADF4350. It is not clear for me if the device runs with FRAC = 0 but with LDF = 0 (fractional-N digital lock detect) is it still possible to adjust the output phase by 360°/MOD?

If yes, do I have to set anything else than turning on Phase Resync in Register 3 and set an appropriate MOD and Phase value?

I'm running two devices in parallel fed by the same reference and I cannot see any change when I program the phase word with different values.

Could you give me some guidance?


Thank you!