DescriptionCascade of two CDRs with just different char frequency.png
English: Tolerance and transfer curves of two CDRs with the same clock frequency, where the second (red) is locked to the first (blue).
The characteristic frequency (transfer and tolerance low-pass corner) is different.
The tolerance to high frequency jitter is also different.
The wideband CDR has a lower tolerance, and vice-versa.
The cascade tolerates the amount of sinusoidal jitter that is tolerated separately by both CDRs (the tolerance region is the OR of the two).
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