Since a good OCXO may have an AM noise floor well below -170dBc/Hz the resultant output jitter due to AM noise using the amplitude, frequency, bandwidth and threshold offset of my previous example would be 80fs rms or less. Now unless one uses a logic family with sub 250ps intrinsic jitter the effect of AM to PM conversion in this case is insignificant. Even if one found such a logic family the threshold mismatch of such a logic is likely to be much smaller than 1V further reducing the jitter due to AM to PM conversion via the threshold mismatch.
Bruce _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
