# An Interview with Kendall Castor-Perry

- Show: [The Amp Hour](https://hardwarepodcasts.com/podcast/the-amp-hour)
- Published: 2020-01-27
- Length: 1h 20m
- Episode: 476
- Page: https://hardwarepodcasts.com/podcast/the-amp-hour/2020-01-27-an-interview-with-kendall-castor-perry
- Listen: https://theamphour.com/476-an-interview-with-kendall-castor-perry/

## Summary

Dave Jones, known as the 'Filter Wizard' and former audio specialist at Burr-Brown and Cypress, discusses the evolution of analog filtering from discrete components to integrated circuits. He explains how the shift to Delta-Sigma ADCs reduced the need for external analog filters in audio, while high-speed digital interfaces have reintroduced analog design challenges like signal integrity and trace roughness. Jones emphasizes that power supply quality, clock jitter, and physical PCB layout are critical factors in high-performance design, often overlooked by engineers who rely solely on simulation. He advocates for rigorous system-level thinking and understanding the physics of signals rather than just applying empirical fixes like adding capacitors.

## Chapters

- [0:16](https://hardwarepodcasts.com/podcast/the-amp-hour/2020-01-27-an-interview-with-kendall-castor-perry#t=16) Introduction: Dave Jones and the Filter Wizard
- [1:26](https://hardwarepodcasts.com/podcast/the-amp-hour/2020-01-27-an-interview-with-kendall-castor-perry#t=86) Career Origins at Chemo and Early Filter Design
- [7:35](https://hardwarepodcasts.com/podcast/the-amp-hour/2020-01-27-an-interview-with-kendall-castor-perry#t=455) Learning Filters: Math, Physics, and Oscilloscopes
- [18:45](https://hardwarepodcasts.com/podcast/the-amp-hour/2020-01-27-an-interview-with-kendall-castor-perry#t=1125) Industrial Filters and the Shift to Delta-Sigma ADCs
- [25:51](https://hardwarepodcasts.com/podcast/the-amp-hour/2020-01-27-an-interview-with-kendall-castor-perry#t=1551) Modern Filtering: Digital Engines and Signal Integrity
- [35:07](https://hardwarepodcasts.com/podcast/the-amp-hour/2020-01-27-an-interview-with-kendall-castor-perry#t=2107) Power Supply Noise and Clock Jitter in Audio
- [43:34](https://hardwarepodcasts.com/podcast/the-amp-hour/2020-01-27-an-interview-with-kendall-castor-perry#t=2614) PCB Layout, Parasitics, and Simulation Limits
- [53:05](https://hardwarepodcasts.com/podcast/the-amp-hour/2020-01-27-an-interview-with-kendall-castor-perry#t=3185) Simulation vs. Experimentation and System Design
- [1:07:20](https://hardwarepodcasts.com/podcast/the-amp-hour/2020-01-27-an-interview-with-kendall-castor-perry#t=4040) Selecting Filter Topologies and Customer Requirements
- [1:14:35](https://hardwarepodcasts.com/podcast/the-amp-hour/2020-01-27-an-interview-with-kendall-castor-perry#t=4475) USB Audio Clock Recovery and Cypress PSOC

## Topics

- [Analog & power electronics](https://hardwarepodcasts.com/topic/analog-and-power-electronics)
- [PCB design & layout](https://hardwarepodcasts.com/topic/pcb-design)
- [Embedded firmware](https://hardwarepodcasts.com/topic/embedded-firmware)
- [Microcontrollers & dev platforms](https://hardwarepodcasts.com/topic/microcontrollers-and-platforms)
- [Debugging & failure analysis](https://hardwarepodcasts.com/topic/debugging-and-failure-analysis)

## Most relevant to

large enterprises

## Mentioned

- Chemo (company)
- Burr-Brown (company)
- Texas Instruments (company)
- Cypress (company)
- PSOC (product)
- LTspice (tool)
- SPICE (tool)
- MATLAB (tool)
- Simulink (tool)
- SAPWIN (tool)

## Related episodes from other shows

- [379: Monstrous Cable Corporation](https://hardwarepodcasts.com/podcast/embedded-fm/2021-07-08-379-monstrous-cable-corporation) (Embedded.fm)
- [The Spark Gap - Episode 10](https://hardwarepodcasts.com/podcast/the-spark-gap/2014-08-20-the-spark-gap-episode-10) (The Spark Gap)
- [The State of Analog Design in 2023](https://hardwarepodcasts.com/podcast/ee-times-current/2023-01-20-the-state-of-analog-design-in-2023) (EE Times Current)
- [The Spark Gap - Episode 33](https://hardwarepodcasts.com/podcast/the-spark-gap/2015-05-20-the-spark-gap-episode-33) (The Spark Gap)
- [Episode 67: A Conversation with Aart de Geus on EDA and the Future of Silicon Design](https://hardwarepodcasts.com/podcast/the-circuit/2024-05-13-episode-67-a-conversation-with-aart-de-geus-on-eda-and-the-future-of-silicon-des) (The Circuit)

## Citing this page

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