A DT 0-2 MASH ΣΔ modulator with VCO-based quantizer for enhanced linearity

doi:10.1109/APCCAS.2012.6418964

UM > Faculty of Science and Technology > DEPARTMENT OF ELECTRICAL AND COMPUTER ENGINEERING

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	A DT 0-2 MASH ΣΔ modulator with VCO-based quantizer for enhanced linearity
	Tao He 1; Yun Du 1; Yang Jiang 1; Sai-Weng Sin1 ; Seng-Pan U 1,2; R.P.Martins 1,3
	2013-01
Conference Name	IEEE Asia Pacific Conference on Circuits and Systems (APCCAS)
Source Publication	2012 IEEE Asia Pacific Conference on Circuits and Systems
Pages	33-36
Conference Date	2-5 Dec. 2012
Conference Place	Kaohsiung, TAIWAN
Abstract	This paper presents a new structure of the discrete time 0-2 MASH sigma-delta modulator implemented with VCO-based quantizer in the second stage. The proposed scheme enhances the linearity of the VCO based quantizer, meanwhile it takes advantage of the intrinsic DEM function and first order noise shaping in the second stage. Besides, the matching requirement is relaxed and the digital canceling filter is largely simplified. Moreover, no additional active adder in or between two stages is needed because of the 0-2 MASH structure, which can save a lot of power. The proposed DT 0-2 MASH sigma-delta (ΣΔ) modulator with 10MHz signal bandwidth for wideband applications is designed and simulated in Matlab. The performance of the modulator can reach 97dB SND Runder a sampling rate of 1.15GHz.
DOI	10.1109/APCCAS.2012.6418964
URL	View the original
Indexed By	CPCI-S
WOS Research Area	Engineering
WOS Subject	Engineering, Electrical & Electronic
WOS ID	WOS:000316598900009
Scopus ID	2-s2.0-84874175729
Fulltext Access	View Full-Text via DOI View Full-Text via Web of Science View Full-Text via Scopus
Citation statistics
Document Type	Conference paper
Collection	DEPARTMENT OF ELECTRICAL AND COMPUTER ENGINEERING Faculty of Science and Technology
Corresponding Author	Tao He
Affiliation	1.State-Key Laboratory of Analog and Mixed Signal VLSI. Faculty of Science and Technology, University of Macau, Macao, China 2.Also with Synopsys - Chipidea Microelectronics (Macau) Limited 3.On leave from Instituto Superior Técnico/TU of Lisbon, Portugal
First Author Affilication	Faculty of Science and Technology
Corresponding Author Affilication	Faculty of Science and Technology
Recommended Citation GB/T 7714	Tao He,Yun Du,Yang Jiang,et al. A DT 0-2 MASH ΣΔ modulator with VCO-based quantizer for enhanced linearity[C], 2013, 33-36.
APA	Tao He., Yun Du., Yang Jiang., Sai-Weng Sin., Seng-Pan U., & R.P.Martins (2013). A DT 0-2 MASH ΣΔ modulator with VCO-based quantizer for enhanced linearity. 2012 IEEE Asia Pacific Conference on Circuits and Systems, 33-36.

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