A CMOS 100 MHz continuous-time seventh order 0.05° equiripple linear phase leapfrog multiple loop feedback Gm-C filter

H.W. Su, Y. Sun

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

    2 Citations (Scopus)
    58 Downloads (Pure)

    Abstract

    A novel 100 MHz CMOS Gm-C seventh-order 0.05° equiripple linear phase low-pass multiple loop feedback (MLF) filter based on leapfrog (LF) topology is presented. The filter is implemented using a fully-differential linear, high performance operational transconductance amplifier (OTA) based on cross-coupled pairs. PSpice simulations in a standard TSMC 0.25 μm CMOS process and with a single 5 V power supply have shown that the cut-off frequency of the filter without and with gain boost ranges from 8-32 MHz and 15-100 MHz, respectively. With gain boost, total harmonic distortion (THD) for a differential input voltage Vid of 315 mVpp at 1 MHz is less than -40 dB, dynamic range at 1% THD is over 55 dB, output noise with bandwidth 500 MHz is only 300 μVRMS, and power consumption is 322 mW.
    Original languageEnglish
    Title of host publicationprocs of IEEE Int Symposium on Circuits & Systems
    Subtitle of host publicationISCAS 2002
    PublisherInstitute of Electrical and Electronics Engineers (IEEE)
    Pages17-20
    Volume2
    ISBN (Print)0-7803-7448-7
    Publication statusPublished - 2002

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