# An Interview with Eric Bogatin - Tilded Thumb Tenets

- Show: [The Amp Hour](https://hardwarepodcasts.com/podcast/the-amp-hour)
- Published: 2015-06-04
- Length: 1h 33m
- Episode: 252
- Page: https://hardwarepodcasts.com/podcast/the-amp-hour/2015-06-04-an-interview-with-eric-bogatin-tilded-thumb-tenets
- Listen: https://theamphour.com/252-an-interview-with-eric-bogatin-tilded-thumb-tenets/

## Summary

Eric Bogatin, Dean of the Teledyne LeCroy Signal Integrity Academy, explains the foundational physics of signal integrity, emphasizing that engineers must understand Maxwell's equations and the concept of 'being the signal' to grasp how voltage waves propagate on transmission lines. He outlines three essential rules of thumb: bandwidth is approximately 0.35 divided by rise time, signals travel at roughly 6 inches per nanosecond in FR4, and a 50-ohm microstrip requires a line-to-dielectric thickness ratio of 2:1. Bogatin discusses the importance of using 2D and 3D field solvers like those from Polar Instruments for accurate impedance calculation, particularly with hatched ground planes, and critiques common misconceptions about inductance and capacitance in power distribution networks.

## Chapters

- [0:00](https://hardwarepodcasts.com/podcast/the-amp-hour/2015-06-04-an-interview-with-eric-bogatin-tilded-thumb-tenets#t=0) Introduction and the Physics of Signal Integrity
- [14:22](https://hardwarepodcasts.com/podcast/the-amp-hour/2015-06-04-an-interview-with-eric-bogatin-tilded-thumb-tenets#t=862) Rules of Thumb: Bandwidth and Rise Time
- [22:37](https://hardwarepodcasts.com/podcast/the-amp-hour/2015-06-04-an-interview-with-eric-bogatin-tilded-thumb-tenets#t=1357) Teledyne LeCroy and Indium Phosphide Technology
- [30:13](https://hardwarepodcasts.com/podcast/the-amp-hour/2015-06-04-an-interview-with-eric-bogatin-tilded-thumb-tenets#t=1813) Field Solvers and Hatched Planes
- [38:19](https://hardwarepodcasts.com/podcast/the-amp-hour/2015-06-04-an-interview-with-eric-bogatin-tilded-thumb-tenets#t=2299) Signal Speed and Instantaneous Impedance
- [47:23](https://hardwarepodcasts.com/podcast/the-amp-hour/2015-06-04-an-interview-with-eric-bogatin-tilded-thumb-tenets#t=2843) Power Plane Placement and Stack-up Risks
- [50:28](https://hardwarepodcasts.com/podcast/the-amp-hour/2015-06-04-an-interview-with-eric-bogatin-tilded-thumb-tenets#t=3028) When to Care About Signal Integrity
- [59:16](https://hardwarepodcasts.com/podcast/the-amp-hour/2015-06-04-an-interview-with-eric-bogatin-tilded-thumb-tenets#t=3556) Misconceptions About Inductance and Capacitance
- [1:08:01](https://hardwarepodcasts.com/podcast/the-amp-hour/2015-06-04-an-interview-with-eric-bogatin-tilded-thumb-tenets#t=4081) The Signal Integrity Academy and Online Education

## Topics

- [Analog & power electronics](https://hardwarepodcasts.com/topic/analog-and-power-electronics)
- [PCB design & layout](https://hardwarepodcasts.com/topic/pcb-design)
- [EDA & CAD tools](https://hardwarepodcasts.com/topic/eda-and-cad-tools)
- [Careers & education](https://hardwarepodcasts.com/topic/engineering-careers-and-education)

## Most relevant to

large enterprises

## Mentioned

- Teledyne LeCroy (company)
- Polar Instruments (tool)
- Keysight (company)
- SparkFun (company)
- Arduino (product)
- BeTheSignal.com (other)
- SignalIntegrityAcademy.com (other)
- EDN (other)
- Coursera (other)
- Udacity (other)
- LinkedIn (company)
- Lynda.com (other)
- HFSS (tool)
- ADS (tool)

## Related episodes from other shows

- [IPC Courses, PCB Design Practices & Advanced Materials with Kris Moyer](https://hardwarepodcasts.com/podcast/ontrack/2024-07-30-ipc-courses-pcb-design-practices-advanced-materials-with-kris-moyer) (OnTrack)
- [398: Clocks Get Into Everything](https://hardwarepodcasts.com/podcast/embedded-fm/2022-01-14-398-clocks-get-into-everything) (Embedded.fm)
- [Talking Signal Integrity & PCB Laminates w/ Bert Simonovich](https://hardwarepodcasts.com/podcast/ontrack/2024-06-04-talking-signal-integrity-pcb-laminates-w-bert-simonovich) (OnTrack)
- [PCB Grounding Mistakes Your Datasheet Taught You](https://hardwarepodcasts.com/podcast/ontrack/2026-09-23-pcb-grounding-mistakes-your-datasheet-taught-you) (OnTrack)
- [The Spark Gap - Episode 45](https://hardwarepodcasts.com/podcast/the-spark-gap/2016-02-10-the-spark-gap-episode-45) (The Spark Gap)

## Citing this page

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