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    block this user Konstantinos Glaros

    Student, Ph.D. Level

    Imperial College London

    Harmonic vs. geometric mean Sinh integrators in weak inversion CMOS

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    In this paper a novel, practical, low-power, Class-AB companding hyperbolic sine (Sinh) integrator based on the harmonic mean law is presented. MOS transistors operating in their weak inversion region are used for low power and low supply voltage operation. All translinear loops are implemented using single-type devices allowing for fabrication on standard, twin-well CMOS processes. Detailed simulation results from Cadence IC Design Framework and the commercially available AMS 0.35 mum process parameters are reported and discussed. The proposed circuit achieves more than 120 dB of input dynamic range, and a frequency tunability of over 4 decades with a power consumption of less than 1.5 muW. In addition, head-to-head comparison with our previously reported (ISCAS '07) geometric-mean Sinh integrator is performed in an attempt to shed more light on the potential of this very promising class of current-mode companding filters.

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    Description

    Title : Harmonic vs. geometric mean Sinh integrators in weak inversion CMOS
    Author(s) : Glaros, K.N.; Katsiamis, A.G.; Drakakis, E.M.;
    Abstract : In this paper a novel, practical, low-power, Class-AB companding hyperbolic sine (Sinh) integrator based on the harmonic mean law is presented. MOS transistors operating in their weak inversion region are used for low power and low supply voltage operation. All translinear loops are implemented using single-type devices allowing for fabrication on standard, twin-well CMOS processes. Detailed simulation results from Cadence IC Design Framework and the commercially available AMS 0.35 mum process parameters are reported and discussed. The proposed circuit achieves more than 120 dB of input dynamic range, and a frequency tunability of over 4 decades with a power consumption of less than 1.5 muW. In addition, head-to-head comparison with our previously reported (ISCAS '07) geometric-mean Sinh integrator is performed in an attempt to shed more light on the potential of this very promising class of current-mode companding filters.
    Keywords : companding, translinear, ELIN

    Subject : unspecified
    Area : Electronic Engineering
    Language : English
    Year : 2008

    Affiliations Imperial College London
    Conference_title : ISCAS 2008
    Pages : 2905-2908
    Url : http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=4542065
    Doi : 10.1109/ISCAS.2008.4542065

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