SI/PI Technical Session

This Is Why You Need To Worry About Terminations

Eastern Time August 25, 2021 1:00 pm - 1:30 pm

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Eric Bogatin

The first rule of engineering transmission lines is to build a controlled impedance interconnect. The second rule is to implement a termination strategy for the interconnects based on the routing topology and the drivers and receivers. In our Advanced PCB Design class, we use a simple demonstration test board to illustrate the perils of bad termination and how one small change can dramatically improve signal quality. We also bring the scope measurements into a simulation environment and do a direct measurement-simulation correlation.  I will show examples of measurements from this test board and how we are able to achieve excellent measurement-simulation correlation using extracted driver models.