Op Amp Theory and Design - Phil's Lab #53
Operational amplifier (op amp) theory and design of a very simple op amp using discrete components (transistors, resistors, capacitors). Including content on op amp stages (difference amplifier, gain stage, output stage), bandwidth, gain-bandwidth-product (GBP), op amp performance criteria, negative feedback, and more. Final demonstrations of real-world implementation on a PCB using the Digilent Analog Discovery Pro.
Chapters:
- 00:00Introduction
- 00:17Content
- 01:39Op-Amp Basics
- 02:57Open Loop View
- 03:37Closed Loop View
- 05:00Why is Negative Feedback Useful?
- 07:33Negatives of Using Feedback
- 08:07Implementation of Negative Feedback
- 08:58Op Amp Sections
- 10:10Design Goals
- 10:58Difference Amplifier
- 14:29Gain Stage
- 16:53Simulation and Gain-Bandwidth-Product (GBP)
- 18:28Test Circuit
- 19:48PCB and Schematic Overview (KiCad)
- 22:06WaveForms Overview
- 22:49Test - Gain and Bias
- 24:18Test - Gain-Bandwidth-Product
- 26:04Test - Low- and High-Pass Filter
- 27:23Test - Dominant Pole Compensation
