The Designer's Guide Community Forum

The Designer's Guide Community Forum
https://designers-guide.org/forum/YaBB.pl
Design >> Mixed-Signal Design >> Metastability error probability of a cascade of latches
https://designers-guide.org/forum/YaBB.pl?num=1472932536

Message started by Alok_ky on Sep 3^rd, 2016, 12:55pm

Title: Metastability error probability of a cascade of latches
Post by Alok_ky on Sep 3^rd, 2016, 12:55pm

I want to analyze the probability of error at the output of a cascade of latches. I'm a bit confused about the equation (17) in the "comparator metastability analysis" article in this forum. It says that if Pe1 and Pe2 are the metastabilility probability errors of two latches in cascade, then the total prob of error is :

Pe = Pe1*Pe1;

But what I think, it should be Pe1 +Pe2;

Is it correct ?

Title: Re: Metastability error probability of a cascade of latches
Post by wandola on Apr 5^th, 2017, 6:30pm

dude, when you cascading two latches, the probability of both latches are in metastability state is pe1*Pe2.