Signal Integrity

- July 19, 2012

Signal integrity is at the heart of all high-speed serial links. Without good signal integrity from a transmitter and across a transmission lave, a receiver can't distinguish between and logic 1 and a logic 0. The Signal-Integrity collection features articles that explain how to measure signal characteristics such as jitter and bit-error rate.


Evaluate reference clocks for serial-data jitter specifications

  • 01.13.2017

Measurement techniques used for jitter don't let you predict how a reference clock will operate in a real application.Read More...


Properly ground your circuits

  • 01.06.2017

You may think that having separate analog and digital ground planes will yield maximum performance and minimal EMI, but you'd be wrong.Read More...


Generate PAM4 signals for receiver compliance testing

  • 09.20.2016

PAM4 signals, with their three eyes and small voltage levels make receiver tests a challenge. Changing eye height and adding impairments lets you characterize receivers and perform compliance tests.Read More...


OFC 2016: OIF shows off 56G PAM4, NRZ

  • 03.30.2016

The next generation of high-speed digital communications could be a mix of 56 Gbps PAM4 and NRZ modulation. The Optical Internetworking Forum demonstrated both forms at OFC 2016. Read More...

Is copper dead?

  • 01.12.2016

For years, engineers at DesignCon have asked this question. Eric Bogatin and other will discuss the future of copper at a DesignCon 2016 panel session.Read More...


The tradeoff between crosstalk and loss

  • 01.05.2016

How emerging high speed specifications provide designers flexibility in how they balance loss and crosstalk.Read More...


It’s Not Jitter, It’s Noise

  • 12.28.2015

Intersymbol interference occurs when symbols overlap with each other.


PAM4: A new measurement science

  • 12.01.2015

PAM4 modulation adds a complexity to serial data communications. Measuring its characteristics is a learning experience in progress. Read More...

History of jitter Part 5: PLLs and jitter analysis

  • 08.10.2015

Here’s how we gained deeper understanding of periodic jitter components and saw that from very long waveforms, we could now discover the peaks in the jitter distribution. Read More...

History of jitter Part 4: Time-interval error (TIE)

  • 07.24.2015

At its core, jitter measurement is about comparing when an edge actually arrives to when it's expected to arrive.Read More...

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