Slide 1 Slide 2 Slide 3 Slide 4 Slide 5 Slide 6 Slide 7 Slide 8 Slide 9 Slide 10 Slide 11 Slide 12 Slide 13 Slide 14 Slide 15 Slide 16 Slide 17 Slide 18 Slide 19 Slide 20 Slide 21 Slide 22 Slide 23 Slide 24 Slide 25 Slide 26 Slide 27 Product List
High Speed LVDS Slide 10

These two eye patterns are a good example of equalization. The pattern on the left shows a 3.125 Gbps PRBS-7 signal after 30 inches of FR4. The high frequency content of the sharp edges has been attenuated and the result is an eye that is almost closed and a large amount of deterministic jitter. The eye diagram on the right shows the same waveform after being boosted by approximately 6 dB of equalization. The eye is now open and the jitter is significantly reduced.

PTM Published on: 2011-11-21