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    National Tsing Hua University Institutional Repository > 電機資訊學院 > 資訊工程學系 > 會議論文  >  Low power time-multiplexed SC speech spectrum analyzer

    Please use this identifier to cite or link to this item: http://nthur.lib.nthu.edu.tw/dspace/handle/987654321/13734

    Title: Low power time-multiplexed SC speech spectrum analyzer
    Authors: Chang,J. S.
    Tong,Y. C.
    Date: 1989
    Publisher: Institute of Electrical and Electronics Engineers Inc
    Keywords: Speech
    Spectrum Analyzers
    Integrated Circuits
    Electric Filters
    Semiconductor Devices
    Abstract: A low-power time-multiplexed switched capacitor speech spectrum analyzer embodying several novel circuit designs is described. Expressions for errors that limit the accuracy of the running spectrum are derived. An experimental four-channel (three active and one zero-input channel) speech-spectrum analyzer has been fabricated using a 5-μm double-polysilicon CMOS process. The largest DC offset difference of the BPF (bandpass filter) section in a given chip is typically 8 mV (for five chips), representing a difference error of 0.003% for a 1-V peak signal. These measurements demonstrate that, by careful biquad design, the DC offsets between different BPF section channels within a chip and their corresponding difference errors can be made small.
    Relation Link: 1989 Symposium on VLSI Circuits. Digest of Technical Papers (Cat. No.89TH0262-6)
    URI: http://nthur.lib.nthu.edu.tw/handle/987654321/13734
    Appears in Collections:[資訊工程學系] 會議論文
    [資訊系統與應用研究所] 會議論文

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