Latest Posts

Which Discontinuities are Small Enough to Ignore?

Author: Donald Telian , SI Guys - Guest Blogger A 60 mil via is too small to worry about, right? And that 20 mil solder pad - the signal certainly won’t see that, correct? If you work with high-speed signals, no doubt you’ve asked these questions and someone told you it depends. You might have your own rule-of-thumb RoT that helps you decide which discontinuities – or features – might impact signal quality. In this post I’m going to share my favorite rule-of-thumb r...

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Donald Telian, SiGuys - Guest Blogger 7/9/2018 Comments(1)

Understanding Via Impedance

Author: Donald Telian , SI Guys - Guest Blogger If you routinely give attention to trace impedance but are not accustomed to thinking about via impedance, this post is for you. Or, if you are paying attention to via impedance yet are unsure what dimensions will yield the right impedance, this help with that too. So, when should I use an 8 mil drill? Why should I care? Serial links can fail because of impedance miss-matches discontinuities . In practice, discontinuities are likely causing more pr...

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Donald Telian, SiGuys - Guest Blogger 5/23/2018 Comments(0)

Tutorial on FEC for Serial Links

Here’s a tutorial on FEC, as explained by three industry experts. In this tutorial, the following topics will be covered: Finite Fields and Vector Spaces Linear Block Codes Cyclic Codes Important Classes of Cyclic Codes FEC Applications to Serial Link Systems System Performance Estimation with FEC Error Correlation Study Thanks and good studying! FEC for Serial Links...