This document defines settling time as the time elapsed from the application of an ideal instantaneous step input to the time at which the closed-loop amplifier output has entered and remained within a specified error band. It distinguishes this from small-signal settling time and acquisition time, noting that settling time includes propagation delay, slewing recovery, and linear settling.
The text identifies applications requiring fast settling time, such as Sample-Hold circuits, Multiplexers, and amplifiers used with A/D and D/A converters. It explains that settling time is a closed-loop parameter determined by a combination of amplifier characteristics and cannot be readily predicted from open-loop specifications like slew rate or small-signal bandwidth.
Settling time is the time elapsed from the application of an ideal instantaneous step input to the time at which the closed-loop amplifier output has entered and remained within a specified error band.
No, because it is a closed-loop parameter determined by a combination of amplifier characteristics, nonlinear as well as linear, it cannot be readily predicted from such open-loop specifications as slew rate, small-signal bandwidth, etc.