Design of high-speed two-stage cascode-compensated operational amplifiers based on settling time and open-loop parameters

Authors:
Hamed Aminzadeh;Mohammad Danaie;Reza Lotfi
Affiliations:
Integrated Systems Laboratory, EE Department, Ferdowsi University of Mashhad, Mashhad, Iran;Integrated Systems Laboratory, EE Department, Ferdowsi University of Mashhad, Mashhad, Iran;Integrated Systems Laboratory, EE Department, Ferdowsi University of Mashhad, Mashhad, Iran
Venue:
Integration, the VLSI Journal
Year:
2008

Citing 2
Cited 2

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Integration, the VLSI Journal - Special issue on analog and mixed-signal IC design and design methodologies
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On the power efficiency of cascode compensation over Miller compensation in two-stage operational amplifiers

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Hybrid cascode feedforward compensation for nano-scale low-power ultra-area-efficient three-stage amplifiers

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Abstract

Settling behavior of operational amplifiers is of great importance in many applications. In this paper, an efficient methodology for the design of high-speed two-stage operational amplifiers based on settling time is proposed. Concerning the application of the operational amplifier, it specifies proper open-loop circuit parameters to obtain the desired settling time and closed-loop stability. As the effect of transfer function zeros has been taken into account, the proposed methodology becomes more accurate in achieving the desired specifications. Simulation results are presented to show the effectiveness of the methodology.