A O.5V constant-gm, rail-to-rail OPAMP using a bulk-driven signal compressor

Xiao Zhang, Leona Okamura, Tsukasa Ooishi, Yuzhe Wang, Tsutomu Yoshihara

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    1 Citation (Scopus)

    Abstract

    This paper introduces a rail-to-rail operational amplifier with a single PMOS differential input pair, suita ble for operation in ultra-low voltage environments. In order to achieve rail-to-rail input operation, this proposal employs a novel bulkdriven signal compressor which compresses the common mode voltage of input signal to the input range of PMOS input pairs. With a O.5V supply voltage and 1.5J-LA static current, the simulation results shows the open-loop DC gain is higher than 55dB and a closed-loop unity-gain frequency is about 70KHz. Over the entire common-mode range, the variation of gm is only ± 0.45%.

    Original languageEnglish
    Title of host publication2009 International Conference on Communications, Circuits and Systems, ICCCAS 2009
    Pages657-660
    Number of pages4
    Publication statusPublished - 2009
    Event2009 International Conference on Communications, Circuits and Systems, ICCCAS 2009 - Milpitas, CA
    Duration: 2009 Jul 232009 Jul 25

    Other

    Other2009 International Conference on Communications, Circuits and Systems, ICCCAS 2009
    CityMilpitas, CA
    Period09/7/2309/7/25

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    ASJC Scopus subject areas

    • Computer Networks and Communications
    • Hardware and Architecture
    • Electrical and Electronic Engineering

    Cite this

    Zhang, X., Okamura, L., Ooishi, T., Wang, Y., & Yoshihara, T. (2009). A O.5V constant-gm, rail-to-rail OPAMP using a bulk-driven signal compressor. In 2009 International Conference on Communications, Circuits and Systems, ICCCAS 2009 (pp. 657-660). [5250437]