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Current Operational Amplifier (COA): CMOS Realization and Active Compensation

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Abstract

A new COA-CMOS realization suitable for low-power designs is presented. The proposed design features a high performance in terms of input impedance, current tracking accuracy, DC offset and AC response. A new class AB output stage is used in order to enhance the slew rate as well as increase power efficiency. The active compensation of the COA based amplifiers is also discussed and the adjoint network theorem is used to generate the compensated circuits from their voltage mode counterparts.

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Authors and Affiliations

  1. Department of Electronics and Communications, Cairo University, Egypt

    Inas A. Awad & Ahmed M. Soliman

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  1. Inas A. Awad
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  2. Ahmed M. Soliman
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Awad, I.A., Soliman, A.M. Current Operational Amplifier (COA): CMOS Realization and Active Compensation. Analog Integrated Circuits and Signal Processing 24, 141–152 (2000). https://doi.org/10.1023/A:1008384006037

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  • DOI: https://doi.org/10.1023/A:1008384006037

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