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  • 标题:Switched-Current Techniques: An Overview of Cumulative SI-Related Errors on Dynamic and Static Performances of 2nd Order LP-Ms
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  • 作者:Karim ABBES ; Naoufel Gueddah ; Mohamed MASMOUDI
  • 期刊名称:International Journal on Electrical Engineering and Informatics
  • 印刷版ISSN:2085-6830
  • 出版年度:2011
  • 卷号:3
  • 期号:4
  • 出版社:School of Electrical Engineering and Informatics
  • 摘要:We present in this work a systematic analysis to identify Sigma Delta Modulators (∑ΔMs) non-idealities, such as charge injection error, Input/Output conductance ratio error and settling time error. A physical mechanism behind Switched Current (SI) errors is proposed. In the first time, errors mentioned above are treated separately and a behavioural model of SI cell is derived for each non-ideality. In the second time, we propose a behavioural model of Non-inverting Lossless Integrator. For typical variations of SI-related errors, simulations have been made using Matlab/Simulink. Finally we present their influences on both dynamic and static performances of the 2nd order SI Low Pass ∑ΔMs (SI-LP∑ΔMs).
  • 关键词:Analog/Digital Converter; Switched Current technique; Sigma-Delta;Modulator; error mechanisms; Dynamic and Static Performances.
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