Single-amplifier integrator-based low power CMOS filter for video frequency applications

C. Hill, Y. Sun, H.W. Su

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

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    Abstract

    This paper describes a new low power fully differential second-order continuous-time low pass filter for use at video frequencies. The filter uses a single active device in combination with MOSFET resistors and grounded capacitors to achieve very low power consumption, small chip area and large dynamic range. The ideal integrator is realised using an internally compensated opamp consisting of only current mirrors and voltage buffers, whilst the lossy integrator is implemented by a single passive RC circuit. The filter has been simulated using a CMOS process. Results show that with a single 5 V power supply, cut-off frequency can be tuned from 3.5 MHz to 8 MHz, dynamic range is better than 67 dB, and power consumption is less than 1.7 mW.
    Original languageEnglish
    Title of host publicationProcs IEEE Int Symposium on Circuits & Systems
    Subtitle of host publicationISCAS 2002
    PublisherInstitute of Electrical and Electronics Engineers (IEEE)
    Pages517-520
    Volume1
    ISBN (Print)0-7803-7448-7
    DOIs
    Publication statusPublished - 2002

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