DesignCon 2009 - Quantifying Crosstalk Jitter

DesignCon 2009 - Quantifying Crosstalk Jitter
DesignCon 2009




Quantifying Crosstalk Induced
Jitter in Multi-lane Serial Data
Systems

Martin Miller Ph.D. , LeCroy Corporation
Martin.miller@lecroy.com

Michael Schnecker, LeCroy Corporation
Michael.schnecker@lecroy.com
Abstract
Multi-lane serial data links are susceptible to crosstalk from adjacent lanes as well as
external aggressors. The resulting interference increases the jitter and noise on the victim
lanes and can ultimately cause bit errors. While techniques such as network analysis
using either TDR or VNA can measure the coupling between lanes, they cannot directly
measure the impact of crosstalk on timing jitter for a given lane. This paper presents
techniques that can be used to accurately measure the amount of jitter contributed by
crosstalk independent of other jitter so