sj156.lim
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Hwaseongsi, Republic of Korea

Dear all,
I am reading a guide document called "Modeling Jitter in PLLbased Frequency Synthesizers" in the Analysis menu And I have two questions as below.
Question 1. There is the following sentence on page 12. "For systems that exhibit simple accumulating jitter, each transition is relative to the previous transition, and the variation in the length of each period is independent, so the variance in the time of each transition accumulates" In this part, It is said each transition is related to the others, On the contrary, I do not understand how the variation in the length of each period becomes independent, can it be explained?? Question 2. On page 12, I don't understand how Equations (34) and (35) came out, can anyone explain how Jk is induced ? I thought it was like the following, is the following equations wrong? Jk =√(var(ti+k ti)) = √(var[jacc(ti+k)jacc(ti)+k∙T]) = √(var[jacc(ti+k)jacc(ti)]) J = √(var[jacc(ti+1)jacc(ti)]) And, I don't understand why T goes into jacc in J = √(var[jacc(ti+T)jacc(ti)])(35).
Thanks in advance Jin
