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Discrete-time mash delta-sigma modulator with second-order digital noise coupling for wideband high-resolution applications
Qin, Xinyu1; Zhang, Jingying1; Qi, Liang1; Sin, Sai Weng2; Martins, Rui P.2; Wang, Guoxing1
2021
Source PublicationProceedings - IEEE International Symposium on Circuits and Systems
Volume2021-May
AbstractThis paper presents a discrete-time multi-stage noise shaping (MASH) delta-sigma modulator (DSM) with second-order digital noise coupling for wideband high-resolution applications. By directly injecting the output of the second loop into the quantizer input of the first loop while choosing an appropriate signal transfer function of the second loop, a second-order digital noise coupling can be easily constructed without almost imposing any hardware complexity. With the help of the second-order digital noise coupling, the inherent quantization noise leakage in the MASH topology is significantly mitigated, thus resulting in less DC gain requirement for the integrators. Mathematical analysis and further simulation results are presented to demonstrate the effectiveness of the proposed MASH structure.
KeywordDigital noise coupling Multistage noise shaping (MASH) Noise leakage Wideband high-resolution applications ΔΣ modulator (DSM)
DOI10.1109/ISCAS51556.2021.9401651
URLView the original
Language英語English
Scopus ID2-s2.0-85108993205
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Document TypeConference paper
CollectionUniversity of Macau
Affiliation1.Department of Micro/Nano Electronics, Shanghai Jiao Tong University, Shanghai, 200240, China
2.State Key Laboratory of Analog and Mixed-Signal VLSI, Department of Electrical and Computer Engineering, Faculty of Science and Technology, Institute of Microelectronics, University of Macau, 999078, Macao
Recommended Citation
GB/T 7714
Qin, Xinyu,Zhang, Jingying,Qi, Liang,et al. Discrete-time mash delta-sigma modulator with second-order digital noise coupling for wideband high-resolution applications[C],2021.
APA Qin, Xinyu,Zhang, Jingying,Qi, Liang,Sin, Sai Weng,Martins, Rui P.,&Wang, Guoxing.(2021).Discrete-time mash delta-sigma modulator with second-order digital noise coupling for wideband high-resolution applications.Proceedings - IEEE International Symposium on Circuits and Systems,2021-May.
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