降低开关电流σ - δ调制器的非理想性

Proceedings of the Fourth IEEE International Caracas Conference on Devices, Circuits and Systems (Cat. No.02TH8611) Pub Date : 2002-08-07 DOI:10.1109/ICCDCS.2002.1004004

R. Rodríguez-Calderón, J. Santana-Corte, F. Sandoval-Ibarra

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引用次数: 2

摘要

过采样/spl Sigma//spl Delta/ A/D和基于开关电流(SI)单元的D/A转换器是使用数字电路工艺制造时提供巨大优势的一种选择。然而，SI的非理想性限制了过采样/spl Sigma//spl Delta/调制器的性能。本文介绍了一种传统的二阶/spl Sigma//spl Delta/调制器，该调制器采用SI技术，采用补偿方案减少了积分器的非理想性，提高了调制器在音频应用中的性能。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Reducing non-idealities on switched-current sigma-delta modulators

Oversampling /spl Sigma//spl Delta/ A/D and D/A converters based on switched current (SI) cells are an option that offers great advantages when manufactured with digital circuit processes. However, SI suffers from non-idealities that limit the performance of oversampling /spl Sigma//spl Delta/ modulators. This paper presents a conventional second order /spl Sigma//spl Delta/ modulator using the SI technique with a compensation scheme that reduces non-idealities of the integrators improving the performance of the modulator for audio applications.

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Proceedings of the Fourth IEEE International Caracas Conference on Devices, Circuits and Systems (Cat. No.02TH8611)

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