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Overview
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This course covers the topic of reflections in PCB tracks and how to address ringing caused by reflections. By understanding the differences between electrically short and long scenarios, simulating various cases, and learning about impedance and resistance, students will gain insights into why reflections occur and how to eliminate them. The course also delves into the frequency of ringing, signal level changes due to termination, and source termination. The teaching method includes explanations by Eric Bogatin and practical simulations. This course is intended for individuals interested in signal integrity, PCB design, and electronics engineering.
Syllabus
Understanding reflections
Electrically Short vs. Long
The tool we are using explained
Simulating: Electrically short
Reflections on classic CMOS and standard board
Simulating: Electrically long e.g. DDR3 / DDR4
50 OHM impedance is not 50 OHM resistance
Simulating a buffer example
Why we get reflections
What happens when there is a reflection
Why reflection disappears
Frequency of ringing
How to eliminate reflections
Signal level change caused by termination
Source termination
Taught by
Robert Feranec