Jitter noise and signal integrity at high-speed pdf file

Jitter analysis methods for the design and test of highspeed serial. Jitter and noise separation and analysis in statistical domain 1. A synergistic approach to signal integrity for highspeed digital design. This can be achieved by following some simple analog design rules and using careful pcb layout techniques. This property makes the jitter analysis of a clock signal much easier. An analysis of power supply induced jitter for a voltage mode driver in high speed serial links. Written by the foremost experts on the subject, it leverages concepts and techniques from nonrelated fields such as.

The terms noise and jitter can mistakenly be confused, even more so as data rates and signal amplitudes have changed over time. It also discusses the joint pdfs, with both jitter and noise. Signal integrity engineering for highspeed links christian schuster. Jitter analysis methods for the design and test of high. By default, the spectral plot shows the entire jitter content of the signal.

Mathcad modelling scripts includes appendix c coded for mathcad v. Edn jitter, noise, and signal integrity at highspeed. Jitter, noise, and signal integrity at highspeed no part of any chapter or book may be reproduced or transmitted in. Jitter noise and signal integrity at high speed by mike peng li free ebook download as pdf file. Statistical signal and linear theory for jitter, noise, and signal integrity 27 chapter 3. It provides many benefits in measuring optical signals with low noisejitter and various measurement features optimized to characterize the optical signals. Jitter noise and signal integrity at high speed by mike peng li. Introduction reproduced by permission of pearson education, inc. Mike peng li, jitter, noise and signal integrity at high. Statistical signal and linear theory for jitter, noise, and signal integrity 27. Jitter, noise, and signal integrity at highspeed no part of any chapter or book may be reproduced or transmitted in any form by any means without the prior written. Reproduced by permission of pearson education, inc.

Jitter, noise, and signal integrity at highspeed book. Source, mechanism, and math model for jitter and noise 75 chapter 4. In a cycle less than 10 hz, this fluctuation is called wander, while fluctuation above 10 hz is called jitter. Introduction to signal integrity for students and young engineers by abhijit mahajan. Noise, and signal integrity at highspeed, prentice hall, 2007.

Jitter noise and signal integrity at high speed by mike. Highspeed links which employ source synchronous clocking architectures have the ability to track correlated jitter between clock and data channels up to high frequencies. The circuit transmits the clock signal to the gate driver where it clocks a. High speed circuit board signal integrity download ebook. Analysis of a spread spectrum clock signal, showing the 39 khz triangular modulation on the 98 mhz clock. A synergistic approach to signal integrity for highspeed digital design this book is designed to provide contemporary readers with an understanding of the emerging highspeed signal integrity issues that are creating roadblocks in digital design. With an unbounded pattern, it typically follows a gaussian distribution. Appendix c includes all the equations from the back of the book, with examples. Examples include serdes for highspeed io signal transmission as well as generalized differential measurements found in highspeed interfaces such as usb 3. Traditionally, sampling oscilloscope is the tool of choice for viewing and measuring optical signals. Prediction and measurement of supply noise induced jitter. Figure 31 shows an ideal signal and a signal that has jitter with a. Appreciable noise on the clock will manifest itself as jitter.

Signal integrity generally is defined as any deviation from ideal waveform. Jitter, noise, and signal integrity at highspeed by mike. Signal integrity analysis of 28 gbits highspeed digital signal. Highspeed digital design overview signal integrity. Jitter, noise, and signal integrity at highspeed a tutorialpart i. The graph is shown below for the fractional oversampling how to reduce the timing jitter. However, digital signals are fundamentally analog in nature, and all signals are subject to effects such as noise, distortion, and loss. Consequently, the jitter on the lowspeed signal can be measured easily using conventional jitter measurement techniques and mapped back to its corresponding value relative to. Jitter, noise, and signal integrity at highspeed paperback. New systemlevel techniques for optimizing signalpower integrity in highspeed interfacesfrom pioneering innovators at rambus, stanford, berkeley, and mit as data communication rates.

Jitter period is the interval between two times of maximum effect or minimum effect of a signal characteristic that varies regularly with time. Pdf an analysis of power supply induced jitter for a. This book is designed to provide contemporary readers with an understanding of the emerging highspeed signal integrity issues that are creating roadblocks in digital design. Relation between rms period jitter and phase noise using the fourier series expansion, it can be shown that a squarewave clock signal has the same jitter behavior as its base harmonic sinusoid signal. Speed noise and grounding seminar signal integrity. Jitter is fluctuation in the timeaxis direction of a digital signal. The predicted supply noise induced jitter is shown to correlate well with the measurement data for a high speed io interface operating at 6. Jitter, noise, ber jnb, and interrelationships 109.

Eye diagram and its relationship to jitter pdfs and noise pdfs. Jitter noise and signal integrity at high speed issuu. Li provides powerful new tools for solving these problemsquickly. By using tools that help you rapidly characterize and discover sources of jitter and signal integrity concerns, you can bring new designs to market faster, with more confidence that they operate reliably in todays ultra highspeed environment. A guide to making rf measurements for signal integrity. Jitter caused by external factors such as thermal noise. However, certain signal integrity signatures such as overshoot, undershoot, and ringing see figure 1. Introduction to jitter, noise, and signal integrity at. Pdf jitter, noise, and signal integrity at highspeed semantic. Reducing the jitter noise power by oversampling in high speed ofdm system. Li provides powerful new tools for solving these problemsquickly, efficiently, and reliably. In telecommunication, an eye pattern, also known as an eye diagram, is an oscilloscope display in which a digital signal from a receiver is repetitively sampled and applied to the vertical input, while the data rate is used to trigger the horizontal sweep. Download the ppt file to see teacherspresenters notes i.

Using a highspeed scope for digital jitter measurements the following questions and answers were created from the live eseminar broadcast of october 22, 2003. Jitter frequency, the more commonly quoted figure, is its inverse. In jitter, noise, and signal integrity at highspeed, dr. Over short distances and at low bit rates, a simple conductor can transmit. The challenges of highspeed design require some additional effort to ensure signal integrity. Advanced signal integrity for highspeed digital designs.

Power integrity analysis for jitter characterization. As a digital signal becomes attenuated and approaches noise level, the trigger point becomes unstable. Reducing the jitter noise power by oversampling in high. Jitter, noise, ber jnb, and interrelationships 109 chapter 5. Jitter, noise and eyediagram analysis solution tektronix. With todays highspeed serial buses, there is often significant energy at the 5th. Jitter, noise, and signal integrity at highspeed isbn. Authors biography hai lan is a senior member of technical staff at rambus inc.

Written by the foremost experts on the subject, it leverages concepts and techniques from nonrelated fields such as applied physics. In digital electronics, a stream of binary values is represented by a voltage or current waveform. Onchip jitterspectrumanalyzer for highspeed digital. Source, mechanism, and math model for jitter and noise 75. Receiver jitter tracking characteristics in highspeed. The pdf of the sum of 2 independent random variable is. Download pdf highspeeddigitaldesign free online new.

Stefan erb submitted as thesis to attain the academic degree dr. It then discusses the noise total pdf and its relationship with the pdfs of its component. It is so called because, for several types of coding, the pattern looks like a series of eyes between a pair of rails. Realtime oscilloscopes are preferred for ample debugtroubleshooting and to capture intermittent. The resulting waveform resembles an eye, hence the name eye diagram. The variance of the noise due to jitter as a function of received subcarrier index when bandedge subcarriers are unused. Jitter, noise, and signal integrity at high speed isbn. The higher the ratio, the better the system immunity to noise. Eye diagram with timing jitter and amplitude noise pdfs. Preface xv acknowledgements xxi about the author xxiii chapter 1. This paper describes how these key channel effects impact the jitter performance and. Understanding signal integrity terms and measurements eye diagrams an eye diagram is the result of superimposing the 1s, 0s and corresponding transitions of a high speed digital signal onto a single amplitude, versus time display. To examine the lowfrequency jitter components, the spectrum can be zoomed and measured with cursors.