ZHCSIQ4B September 2018 – December 2018 OPA828
Settling time is a measure of an amplifiers output to settle to within some percentage (error band) of the input amplitude and is used to describe an amplifiers response to a step input. An amplifiers settling time is comprised of both a large signal response and small signal response. The large signal response is characterized by the rise and fall times while the small signal response is characterized by overshoot and ringing. Figure 50 illustrates the concepts and terminology associated with an amplifiers settling time. Specifically the settling time is defined as the time it takes the output to settle to within a specified error band from the time the input signal was applied.
The OPA828 minimizes settling time for high-resolution systems by incorporating an internal slew boost circuit which minimizes rise and fall times and having wide bandwidth with excellent phase margin with low ringing, enabling small signal settling in minimal time. The OPA828 is trimmed in laser production that will minimize part-to-part variation in the device slew rate, bandwidth and phase margin thus mainlining excellent unit-to-unit variations across all manufacturing lots.