Correlation of Transfer Function Implementation on Delta-Sigma Modulator Stability Analysis
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概要
- 論文の詳細を見る
Higher order delta-sigma (ΔΣ) modulator with one bit quantizer is known as one of the easiest method to gain a high resolution A/D converter without the need of accurately matched components. However, stability of higher order ΔΣ modulator is still a problem during the design and implementation process. Stabilizing higher order modulator requires the proper choice of integrator gains. In this paper, a new approach on ΔΣ modulator stability analysis which based on the system auto-correlation function is proposed, and equation of NTF power integration is derived out. The specification of equation related to input signal amplitude and output quantization level is discussed. Combining with system control theory, the stability of higher order modulator (2nd and 3rd order) is evaluated. Matlab simulation confirm the proposed method. It offers an evaluation method for the choice of the in-loop integrator gains which ensure the modulator operates under the stable status, and is able to be used for designing stable higher order ΔΣ analog-to-digital converters.
- 社団法人電子情報通信学会の論文
- 2000-04-25
著者
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Hirano Satoshi
Frontier Research Program For Subduction Dynamics Japan Marine Science And Technology Center
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Hirano Satoshi
Department Of Electrical And Computer Engineering Nagoya Institute Of Technology
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ZHANG Yikui
Department of Electrical and Computer Engineering, Nagoya Institute of Technology
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HAYAHARA Etsuro
Department of Electrical and Computer Engineering, Nagoya Institute of Technology
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ZHANG Yikui
The authors are with the Department of Electrical and Computer Engineering, Nagoya Institute of Tech
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HAYAHARA Etsuro
The authors are with the Department of Electrical and Computer Engineering, Nagoya Institute of Tech
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HIRANO Satoshi
The authors are with the Department of Electrical and Computer Engineering, Nagoya Institute of Tech
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SAKAKIBARA Naohito
The author is with Aiphone Co. Ltd.
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Zhang Y
Department Of Electrical And Computer Engineering Nagoya Institute Of Technology
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