I
Abstract II
III
... I Abstract...II...III... IV... VI 1...1 2...3 2-1...3 2-2...4 2-3...6 2-4...6 3...8 3-1...8 3-2...10 4...12 5...15 5-1...15 5-2...17 IV
5-3...18 6...21 6-1...21 6-2...22 6-3...22 6-4 (Histogram)...25 6-5...25 6-6...29 7...32...33 V
2-1 Jitter...3 2-2...4 2-3...5 2-4...5 3-1...8 3-2...9 3-3...9 3-4...10 3-5...11 4-1...12 4-2...13 4-3...14 5-1...16 5-2...16 5-3...17 5-4...18 5-5...19 6-1...23 VI
6-2...23 6-3...23 6-4...25 6-5...26 6-6...26 6-7...27 6-8...28 6-9...30 6-10...30 VII
1 (ATE) (BER=10-12 ) (Jitter tolerance) 1
2
2 2-1 (Jitter) 2-1 Jitter S ( t ) = P ( 2 π f d t + ϕ ( t )) ϕ ( t ) 3
(UI, unit interval) 2-2 (Random Jitter, RJ) (Deterministic Jitter, DJ) 2-2 (Gaussian distribution) (mean, µ) (standard deviation, σ) 4
2-3 (deterministic Jitter, DJ) (Probability Density Function, PDF) 2-4 (Periodic Jitter, PJ) (Data Dependent Jitter, 5
DDJ) (Duty Cycle Distortion, DCD) (threshold Voltage) (Inter-Symbol Interference, ISI) 2-3 thermal noiseshot noise flick noise EMI cross-talk 2-4 6
S ( t ) = P 2π f t * ϕ ( t ) + ϕ ( t ) ( ) d UB B 7
3 3-1 3-1 8
3-2 (Left Crossing Point) (Right Crossing (One Bit Period) (Sampling Point) 3-3 9
3-4 (Signal Noise Ratio) 3-2 10
3-5 (Fuzzy) (Spread out) 11
4 (Clock Jitter) (Square waveform) (Sinusoid) (amplitude, A) (frequency, f) phase, (period, T) T=1/f 4-1 12
(Slew Rate) (overshoot) (undershoot) (ringing) Overshoot Ringing Preshoot 4-2 13
4-3 14
5 (Unbounded) 5-1 (phase) W 2-2 W W W W W (mean, µ) (standard deviation, σ) 15
5-1 Cycle Time is Randomly 2*( -3~1~+3) 5-2 16
5-2 5-3 (fuzzy) (spread out) 17
5-3 RJ 5-4 18
RJ 5-5 19
20
6 (Periodic Jitter) (Deterministic Jitter, DJ) (Period) (Periodic) (sinusoidal jitter) 6-1 (Electromagnetic Interference, EMI) (Cross-talk) (Switching Power Supply) 21
6-2 ϕ ( t ) S ( t ) = P ( 2π fd t + sin ( t ) ) S ( t ) = P ( 2πfd t + Amp * sin ( Frq * t ) ) 6-3 (Period Increasing) (Period Decreasing) 22
6-1 6-2 6-3 23
(Period Increasing) (Period Decreasing) 24
6-4 (Histogram) PJ frequency/amplitude = 0.1* Signal frequency/amplitude 6-4 6-5 25
6-5 6-6 (Trace) 26
PJ : -0.58~0.58 =1.16/2=0.185 Period PJ 6-7 27
PJ:-1.25~1.25=2.5/ 2=0.4 Period PJ 6-8 28
6-6 ( 2π f t * ϕ ( t ) + ϕ ( )) S( t ) = P t d Sin ( W * t + Amp * Sin ( Freq * t ) ) UB B 29
6-9 RJ PJ 6-10 30
31
7 32
[1] John Patrin, Mike Li, Comparison and correlation of Signal Integrity Measurement Techniques, Designcon 2002. [2] Tektronix Application Note: Understanding and Characterizing Timing Jitter, www.tek.com/measurement/scopes/jitter [3] Maxim Data Sheet application 2744: Jitter Measurements for CLK Generators or Synthesizers, Sep 26, 2003 [4] Agilent Technologies Application Note:5988-8427ZHA, www.agilent.com/find/jitter [5] Agilent Technologies Application Note:5988-9109EN Measuring Jitter in Digital System www.agilent.com/find/jitter [6] Masashi Shimanouchi, Periodic Jitter Injection with Direct Time Synthesis by SPP TM ATE for SerDes Jitter Tolerance Test in Production, ITC Proceedings 2003 paper3.1 p48-56 [7] M. P. Li, J. Wilstrup, R. Jessen and D. Petrich, A New Method for Jitter Decomposition Through Its Distribution Tail Fitting, ITC Proceeding, 1999, pp. 788-794 [8] M. P. Li and J. B. Wilstrup, On the Accuracy of Jitter Separation From Bit Error Rate Function, ITC Proceeding, 2002, pp. 710-716. [9] William Stallings, Data and Computer Communications, 5th ed. Prentice-Hall, Inc,1996. [10] Sematech, Test and Test Equipment, ITRS Roadmap, 2001Ed.,PP10-12. [11], A Method of Jitter Analysis, June 2003. 33