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Data-Dependent Jitter in Serial Communications.
- Source :
-
IEEE Transactions on Microwave Theory & Techniques . Nov2005, Vol. 53 Issue 11, p3388-3397. 10p. - Publication Year :
- 2005
-
Abstract
- We present a method for predicting data-dependent jitter (DDJ) introduced by a general linear time-invariant LTI system based on the system`s unit step response. We express the exact DDJ of a first-order system and verify the validity of the solution experimentally. We then propose a perturbation technique to generalize the analytical expression for DDJ. We highlight the significance of the unit step response in characterizing DDJ and emphasize that bandwidth is not a complete measure for predicting DDJ. We separate the individual jitter contributions of prior bits and use the result to predict the DDJ of a general LTI system. In particular, we identify a dominant prior bit that signifies the well-known distribution of deterministic jitter, the two impulse functions. We also show a jitter minimization property of high-order LTI systems. We verify our generalized analytical expression of DDJ for several real systems including an integrated CMOS 10-Gb/s trans-impedance amplifier by comparing the theory and measurement results. The theory predicts the jitter with as low as only 7.5% error. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00189480
- Volume :
- 53
- Issue :
- 11
- Database :
- Academic Search Index
- Journal :
- IEEE Transactions on Microwave Theory & Techniques
- Publication Type :
- Academic Journal
- Accession number :
- 19115169
- Full Text :
- https://doi.org/10.1109/TMTT.2005.857118