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ADV7612 clock output jitter

Question asked by CorentinC on Jan 31, 2013
Latest reply on Nov 12, 2013 by Aphraton



Is there any way or recommendation to reduce video output clock jitter?


When we send the ADV7612 video output bus to a HD-SDI serialiser the SMPTE output stream has much more jitter than when using other video sources and output jitter is out of SMPTE recommendation.

We tried to replace our crystal (27MHz 50ppm) by a 1.8V oscillator but we have the same behaviour.


To be more precise, we are trying to reduce the SMPTE timing jitter (low frequency). Alignment jitter (high frequency) is OK.


Best regards,