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. [SUPPORT] Free trial of Altium Designer: PCBA from $0 (Free Setup, Free Stencil): Patreon: [LINKS] GitHub: Digilent ADP3450: [TIMESTAMPS] 00:00 Introduction 00:17 Content 00:53 Altium Designer Free Trial 01:17 JLCPCB 01:39 Op-Amp Basics 02:57 Open Loop View 03:37 Closed Loop View 05:00 Why is Negative Feedback Useful? 07:33 Negatives of Using Feedback 08:07 Implementation of Negative Feedback 08:58 Op Amp Sections 10:10 Design Goals 10:58 Difference Amplifier 14:29 Gain Stage 16:53 Simulation and Gain-Bandwidth-Product (GBP) 18:28 Test Circuit 19:48 PCB and Schematic Overview (KiCad) 22:06 WaveForms Overview 22:49 Test - Gain and Bias 24:18 Test - Gain-Bandwidth-Product 26:04 Test - Low- and High-Pass Filter 27:23 Test - Dominant Pole Compensation ID: QIBvbJtYjWuHiTG0uCoK