Analysis of jitter peaking and jitter accumulation in re-circulating delay-locked loops

The paper presents analysis results on jitter transfer in delay-locked loops (DLLs). Using a z-domain model for re-circulating DLLs, two main jitter factors, jitter peaking and jitter accumulation, are calculated and it is shown that these two factors always exist and trade off with each other. Using a first or second order of low-pass filter as the loop… (More)