How to determine the Spectral Density and RMS Jitter relationship

If power is extracted from the noise only portion of the spectrum and plotted as a function of frequency, the result is called a Spectral Density plot (see figure below). This plot is interesting since it shows the distribution of the noise power over the frequency spectrum and the area under the plot is equal to the RMS jitter squared, thus relating the time domain RMS jitter spec to the frequency domain spectral purity. Refer to application note AN-840 for more details. For other questions not addressed by the Knowledge Base, please submit a technical support request.

 

Documents

Title Other Languages Type Format File Size Date
Application Notes & White Papers
AN-840 Jitter Specifications for Timing Signals Application Note PDF 349 KB May 7, 2014