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    題名: A low-offset low-noise sigma-delta modulator with pseudorandom chopper-stabilization technique
    作者: Chen, Hsin-Liang;Chen, Po-Sheng;Chiang, Jen-Shiun
    貢獻者: 淡江大學電機工程學系
    關鍵詞: Chopper-stabilization;correlated double sampling low noise;low offset;pseudorandom chopper-stabilization;sigma–delta modulator
    日期: 2010-01
    上傳時間: 2011-10-15 01:11:35 (UTC+8)
    出版者: Piscataway: Institute of Electrical and Electronics Engineers
    摘要: This paper presents a low-offset low-noise sigma-delta modulator with pseudorandom chopper-stabilization technique. The comparison of the noise-cancellation ability with the correlated double sampling and chopper-stabilization techniques is demonstrated; also, the noise performance of these cancellation techniques is observed and discussed. Using the proposed technique, the modulator achieves 92 dB of dynamic range and -135 dB of noise floor while consuming 950 ??W from a 3-V supply. Based on the experimental results, the pseudorandom chopper-stabilization technique has a DC offset voltage that is 6 dB lower than that of the chopper-stabilization technique, and retains a thermal noise floor that is 1.6 dB lower than that of the correlated double sampling technique.
    關聯: IEEE Transactions on Circuits and Systems. Part 1: Regular Papers 56(12), pp.2533-2543
    DOI: 10.1109/TCSI.2009.2018922
    顯示於類別:[電機工程學系暨研究所] 期刊論文

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