CMOS Current-mode Operational Amplifier

Thomas Kaulberg

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    Abstract

    A fully differential-input differential-output current-mode operational amplifier (COA) is described. The amplifier utilizes three second generation current-conveyors (CCII) as the basic building blocks. It can be configured to provide either a constant gain-bandwidth product in a fully balanced current-mode feedback amplifier or a constant bandwidth in a transimpedance feedback amplifier. The amplifier is found to have a gain bandwidth product of 8 MHz, an offset current of 0.8 ¿A (signal-range ±700¿A) and a (theoretically) unlimited slew-rate. The amplifier is realized in a standard CMOS 2.4¿m process.
    Original languageEnglish
    Title of host publicationProceedings of the 18th European Solid-State Circuits Conference
    PublisherIEEE
    Publication date1992
    Pages246-249
    ISBN (Print)87-98-42320-7
    Publication statusPublished - 1992
    Event18th European Solid-State Circuits Conference - Copenhagen, Denmark
    Duration: 21 Sep 199223 Sep 1992
    Conference number: 18
    http://ieeexplore.ieee.org/xpl/mostRecentIssue.jsp?punumber=5468103

    Conference

    Conference18th European Solid-State Circuits Conference
    Number18
    CountryDenmark
    CityCopenhagen
    Period21/09/199223/09/1992
    Internet address

    Bibliographical note

    Copyright: 1992 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE

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