SBOA602
November 2024
OPA593
1
Abstract
Trademarks
1
Introduction
2
Current Booster, Push-Pull Topology Output Characteristics
2.1
Open-Loop Output Impedance
2.2
Minimizing Zero Crossover Distortion
3
Various Current Booster Configurations
3.1
Complementary MOSFET versus BJT Current Booster Comparisons
4
Stabilizing a Design for Power Amplifier Driving 1μF Capacitive Load (CL)
4.1
Op-Amp Driving Resistive Load
4.2
Op-Amp Driving Capacitive Load and Challenges
4.3
Open-Loop AC Stability Analysis - Compensating CL Effects Using DFC
4.4
Closed-Loop Stability Response - Small Signal Step Transient Analysis
4.5
Effects of Riso on Frequency Response in Dual Feedback Compensation
4.6
Summary of the DFC Technique
5
Stabilizing the OPA593 and Darlington Current Booster for 1μF Capacitive Load
5.1
Open-Loop AC Stability Analysis - Composite Op-Amp Driving 1μF CL
5.2
Closed-Loop Stability Response - Composite Op-Amp's Step Transient Analysis
6
Composite Amplifier's Effective BW and Step Time Response
7
Test Bench Validation
8
Summary
9
References
Application Note
Optimizing Dual Feedback Compensation in the OPA593 With a Current Booster for 1μF Capacitive Loads in ATE Applications