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An accurate analysis of slew rate for two-stage CMOS opamps

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3 Author(s)
Yavari, M. ; Electr. & Comput. Eng. Dept., Univ. of Tehran, Iran ; Maghari, N. ; Shoaei, O.

This brief presents a time-domain model for the slew rate of CMOS two-stage Miller compensated operational transconductance amplifiers. The effects of both the first- and second-stage currents are considered in this model and a simple analytical expression is given in terms of the compensation and load capacitors, output voltage change, and device sizes. HSPICE simulation results are provided to show the validity of the proposed model using a 0.25-μm CMOS technology.

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Circuits and Systems II: Express Briefs, IEEE Transactions on  (Volume:52 ,  Issue: 3 )