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High CMRR current mode operational amplifier with a novel class AB input stage

Published: 11 March 2007 Publication History

Abstract

In this paper, improved CMRR, high gain CMOS current-mode operational amplifier (COA) is presented. A new class AB input stage is used in order to obtain very low input resistance. The proposed COA is operated under ±1.5 V voltage supplies and designed with 0.35-μm CMOS process. Results of simulation indicate a 107 dB DC gain, 123 Ω input resistance, common mode rejection ratio exceeding 110dB and a gain-bandwidth product at about 100 MHz.

References

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Abou-Allam E. and El-Masry E. A 200 MHzall Steered Current Operational Amplifier in 1.2-μm CMOS Technology, IEEE J. Solid-State Circuits 1997, 32, 2, 245--249.
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Altun M. and Kuntman H. A wideband CMOS current-mode operational amplifier and its use for band-pass filter realization. Proceedings of Applied Electronics, Pilsen, 2006, 3--6.
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Kaulberg T. A CMOS current-mode operational amplifier. IEEE J. Solid-State Circuits 1993, 28, 7, 849--852.
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Palmisano G., Palumbo G. and Pennisi S. CMOS Current Amplifiers, Boston (MA), Kluwer Academic Publishers, 1999.
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Palmisano G, Palumbo G. A simple CMOS CCII+. International Journal of Circuit Theory and Applications 1995, 23, 6, 599--603.
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Surakampontorn W., Riewruja V., Kumwachara K. and Dejhan K. Accurate CMOS-based current conveyors. IEEE Trans. Instrum. Meas. 1991, 40, 699--702.
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Toumazou C., Lidgey F.J. and Haigh D.G. Analog IC design: The Current-Mode Approach. London- Peter Peregrinus Ltd, 1990.
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Wang W. Wideband class AB (push-pull). current amplifier in CMOS technology. Electronics. Letters 1990, 26. 8, 543--543.

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  1. High CMRR current mode operational amplifier with a novel class AB input stage

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    cover image ACM Conferences
    GLSVLSI '07: Proceedings of the 17th ACM Great Lakes symposium on VLSI
    March 2007
    626 pages
    ISBN:9781595936059
    DOI:10.1145/1228784
    Permission to make digital or hard copies of all or part of this work for personal or classroom use is granted without fee provided that copies are not made or distributed for profit or commercial advantage and that copies bear this notice and the full citation on the first page. Copyrights for components of this work owned by others than ACM must be honored. Abstracting with credit is permitted. To copy otherwise, or republish, to post on servers or to redistribute to lists, requires prior specific permission and/or a fee. Request permissions from [email protected]

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    Publication History

    Published: 11 March 2007

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    Author Tags

    1. current-mode circuits
    2. current-mode operational amplifier

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    GLSVLSI07: Great Lakes Symposium on VLSI 2007
    March 11 - 13, 2007
    Stresa-Lago Maggiore, Italy

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    Overall Acceptance Rate 312 of 1,156 submissions, 27%

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