Cosmin Iorga, Founder and President, NoiseCoupling.com

This paper presents a circuit and methodology for identifying the sources of deterministic jitter in data communication systems. On-chip waveform viewers sample the data stream signal and the power distribution noise on chips, packages, and PCB. A mathematical algorithm calculates the Fourier transforms of the data stream and noise waveforms, correlates the spectral components, and identifies the source of each deterministic jitter component in the data stream. A software program controls the waveform recording, data processing algorithm, and color-coded graphical display of magnitude, frequency, and generating source for each deterministic jitter component.