An improved model for the slewing behavior of opamps

Dept. of Electr. Eng., Minnesota Univ., Minneapolis, MN
IEEE Transactions on Circuits and Systems II Analog and Digital Signal Processing 11/1995; DOI: 10.1109/82.471400
Source: IEEE Xplore

ABSTRACT A new time-domain model for the slewing behavior of two-stage
opamps is presented. This model includes the effects of the load
capacitance, compensation capacitance, device sizes and the nonlinear
behavior of the transistors during the slewing period. This model
improves on the commonly used constant current models and allows for
more predictable designs. The model shows good agreement with
simulations. Circuit design results using the traditional and new
improved models are presented

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