A novel RC time constant tuning technique utilizing programmable current sources for continuous-time delta-sigma modulators
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概要
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A novel RC time constant tuning technique for continuous-time delta-sigma modulators is proposed to alleviate the systematic time constant shift originating from process variations. The proposed tuning technique uses programmable current sources instead of capacitor banks in order to reduce the implemented die area. MATLAB/Simulink simulation results demonstrate that this technique can achieve the desired SQNR even with ±30% RC time constant shifts.
著者
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Tamura Yu
Department Of Mechanical Science And Engineering Chiba Institute Of Technology
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Taniguchi Kenji
Department Of Biotechnology Tottori University
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Matsuoka Toshimasa
Department of Electrical, Electronic and Information Engineering, Osaka University
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K. Bogoda
Department of Electrical, Electronics and Information Engineering, Graduate School of Engineering, Osaka University
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Kanemoto Daisuke
Department of Electrical, Electronics and Information Engineering, Graduate School of Engineering, Osaka University
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Taniguchi Kenji
Department of Electrical, Electronics and Information Engineering, Graduate School of Engineering, Osaka University
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