4.1 How to resolve Op-Amp stability issues using SPICE simulations
Industrial TI Tech Days session
In this presentation, we will discuss the common causes of op-amp stability issues and how to identify these issues using common lab equipment. We will review Bode plots and basic stability theory using phase margin, small-signal overshoot and rate of closure analysis, and explain how to perform open-loop SPICE simulations to obtain the rate of closure and phase margin of op-amp circuits using PSpice® for TI. We will discuss why capacitive loads cause stability issues and will present the capacitive load compensation techniques using an isolation Riso resistor and dual-feedback stability compensation method.