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A Robust Hybrid CT/DT 0-2 MASH DSM with Passive Noise-Shaping SAR ADC
Li, Ke1; Sin, Sai Weng1; Qi, Liang2; Zhao, Weibing3; Wang, Guoxing2; Martins, R. P.1,4
2022
Conference Name2022 IEEE International Symposium on Circuits and Systems, ISCAS 2022
Source PublicationProceedings - IEEE International Symposium on Circuits and Systems
Volume2022-May
Pages551-555
Conference Date27 May 2022through 1 June 2022
Conference Place2022 IEEE International Symposium on Circuits and Systems, ISCAS 2022
Abstract

This paper presents a hybrid CT/DT0-2 multi-stage noise-shaping (MASH) delta-sigma modulator (DSM) with a passive noise-shaping successive approximation register (NSSAR) ADC as the 2 {mathrm{n} mathrm{d}} stage. The overall architecture is simple and robust. The front-end stage employs the continuous-time (CT) operation to perform coarse quantization and provide inherent anti-aliasing and easy driving. The back-end stage uses a second-order NS-SAR architecture, which excels at PVT robustness, power efficiency, and scaling friendliness. It also results in large relaxation of matching issues between the analog and the digital domains compared with conventional CT-MASH. Behavioral simulation results demonstrate the effectiveness and robustness of the proposed hybrid MASH architecture.

KeywordDelta-sigma Modulator (Dsm) Hybrid Adc Multi-stage Noise-shaping (Mash) Noise-shaping Successive Approximation Register (Ns-sar)
DOI10.1109/ISCAS48785.2022.9937224
URLView the original
Indexed ByCPCI-S ; EI
Language英語English
Scopus ID2-s2.0-85142539614
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Document TypeConference paper
CollectionFaculty of Science and Technology
THE STATE KEY LABORATORY OF ANALOG AND MIXED-SIGNAL VLSI (UNIVERSITY OF MACAU)
DEPARTMENT OF ELECTRICAL AND COMPUTER ENGINEERING
Corresponding AuthorSin, Sai Weng
Affiliation1.University of Macau, State Key Laboratory of Analog and Mixed-Signal Vlsi and IME/ECE-FST, Macao
2.Shanghai Jiao Tong University, Department of Micro-Nano Electronics, Shanghai, China
3.Amicro Semiconductor Co., Ltd., Zhuhai, China
4.Universidade de Lisboa, On Leave from Instituto Superior Técnico, Portugal
First Author AffilicationFaculty of Science and Technology
Corresponding Author AffilicationFaculty of Science and Technology
Recommended Citation
GB/T 7714
Li, Ke,Sin, Sai Weng,Qi, Liang,et al. A Robust Hybrid CT/DT 0-2 MASH DSM with Passive Noise-Shaping SAR ADC[C], 2022, 551-555.
APA Li, Ke., Sin, Sai Weng., Qi, Liang., Zhao, Weibing., Wang, Guoxing., & Martins, R. P. (2022). A Robust Hybrid CT/DT 0-2 MASH DSM with Passive Noise-Shaping SAR ADC. Proceedings - IEEE International Symposium on Circuits and Systems, 2022-May, 551-555.
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