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Alexander Huemer alexander.huemer at xx.vuOn Thu, Mar 15, 2012 at 10:56:57AM +0100, Harald Welte wrote: > I think it was mostly related to the levels and coupling, possibly > combined with the 13 MHz signal being a sine wave and not square whihc I > believe the TI PLL expects. As I understand the datasheet of the CDCVF25084 it can very well be the case that a sine wave input makes trouble. Assuming this is the case, could something like a Schmitt trigger between the sine wave source and the PLL improve the situation? Or would that add jitter or some other negative effects to the signal? Kind regards, -Alexander Huemer