What is step response of an amplifier?

The step response of an amplifier describes how the output of the amplifier reacts over time when subjected to a sudden change in input, typically a step function. It characterizes the transient behavior of the amplifier, revealing how quickly and accurately it can respond to changes in input signal. The step response is influenced by the amplifier's bandwidth, rise time, and any inherent delays, providing insights into its stability and performance in dynamic conditions. Analyzing the step response is essential for understanding the amplifier's ability to handle rapid signal variations effectively.