|Thread Links||Date Links|
|Thread Prev||Thread Next||Thread Index||Date Prev||Date Next||Date Index|
The proposal for comment #44 is to remove "p-p" from the headers of tables 75C-1 and 75C-2 altogether. This is not correct.
The "p-p" attribute has to be removed from the TJ and RJ columns only. The headers of both tables have to look as follows:
Reference point DJ (UI p–p) RJ (UI ) TJ (UI )
The jitter budget is built upon the following assumptions:
a. Jitter is represented assuming the DJ to have an equi-probable bimodal distribution and RJ to be Gausian.
b. All sources of random jitter are assumed independent therefore RJ rms values can be added by squares.
c. All sources of DJ are assumed to be correlated (this is a worst case assumption, meaning that all DJ components will be either together at max value or together at min value, with equal probability for the min and the max to occur)
Under these assumptions, RJ and TJ are defined @ BER while DJ is defined by it's peak to peak value and then the following calculation holds:
TJ (@ BER) = DJ p-p + RJ (@ BER)
Principal Engineer AFE (Analog Front-End)
Tel: +972-9-9628000 Ext. 473