Systematic Approach for Discrete-Time to Continuous-Time Transformation of Sigma-Delta Modulators

Abstract : In this paper, we propose a systematic design method for continuous-time sigma-delta modulators. The modified-Z-transform technique is used to take into account any variation occurring between two sampling instants in the continuous-time DAC feedback signal. The proposed discrete-time to continuous-time transformation method is general and well-suited to design automation. A fifth-order lowpass as well as a sixth order bandpass modulators with RZ and NRZ feedback signals are given as design examples.
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Conference papers
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https://hal.archives-ouvertes.fr/hal-01544238
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Submitted on : Wednesday, June 21, 2017 - 3:03:24 PM
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Hassan Aboushady, Marie-Minerve Louërat. Systematic Approach for Discrete-Time to Continuous-Time Transformation of Sigma-Delta Modulators. IEEE International Symposium on Circuits and Systems (ISCAS'2002), May 2002, Phoenix, AZ, United States. pp.229-232, ⟨10.1109/ISCAS.2002.1010431⟩. ⟨hal-01544238⟩

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