Skip to main content
Video s3
    Details
    Poster
    Presenter(s)
    Mahmood Mohammed Headshot
    Display Name
    Mahmood Mohammed
    Affiliation
    Affiliation
    McGill University
    Country
    Abstract

    This work introduces a new design technique to extend the capability of conventional Miller-RC CMOS OTAs to drive large capacitive loads with near-optimum small- and large-signal time responses. The proposed technique involves modifying the R-C compensation network such that the unity-gain frequency, ωt, of the OTA is highly increased. The additional increase in ωt can be traded off for higher loads by transferring the dependency of the dominant pole to CL. To easily implement and verify the proposed technique, the classical differential-ended two-stage OTA has been used as a design example to drive a load of 1000 pF. Interestingly, with the modified compensation network, an area efficient design of the conventional Miller-RC two-stage OTA is provided with excellent results.

    Slides
    • Conventional CMOS OTAs Driving nF-Range Capacitive Loads (application/pdf)