Every PCB Designer Needs To Know This About PCB Track Impedance | TDR | Eric Bogatin
Everything you need to know to understand impedance in PCB layout (and TDR). Clear and easy to understand explanation by Eric Bogatin
Chapters:
- 00:00What is this video about
- 00:49What TDR is and what it does?
- 02:37What is characteristic impedance
- 04:48Why reflections are bad
- 10:54Why do we use 50 ohm in pcb tracks?
- 15:28Are lower impedance tracks more immune to noise?
- 23:45Can you use any impedance for differential pairs?
- 27:10What is difference between closely and loosely coupled diff impedance
- 36:03Experimenting with TDR simulation
- 48:58Measuring and explaining TDR on a simple pcb track
- 56:39Can we do TDR on a real board?
- 1:02:13Measuring and explaining TDR on a pcb track with different width
- 1:05:53Answer: Why we sometimes remove ground under pads
- 1:07:49Measuring a coaxial cable with TDR
- 1:14:51Why you may need TDR are where it is used
- 1:19:00Do we really need to care about small changes in impedance? When?
