A 0.8 μw 8-bit 1.5∼20-pF-input-range capacitance-to-digital converter for lab-on-chip digital microfluidics systems

doi:10.1109/BioCAS.2012.6418416

UM > THE STATE KEY LABORATORY OF ANALOG AND MIXED-SIGNAL VLSI (UNIVERSITY OF MACAU)

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	A 0.8 μw 8-bit 1.5∼20-pF-input-range capacitance-to-digital converter for lab-on-chip digital microfluidics systems
	Yanjie Xiao 1; Tantan Zhang 1; Pui-In Mak1 ; Man-Kay Law1 ; Rui P. Martins1,2
	2012-12-01
Conference Name	IEEE Biomedical Circuits and Systems Conference (BioCAS)
Source Publication	2012 IEEE Biomedical Circuits and Systems Conference (BioCAS)
Pages	384-387
Conference Date	28-30 Nov. 2012
Conference Place	Hsinchu, TAIWAN
Abstract	This paper presents an ultra-low-power capacitanceto-digital converter (CDC) for digital microfluidics systems that demand a wide capacitive sensing range. It is structured with a switched-capacitor capacitance-to-current front-end interface, followed by a differential current-mode SAR analog-to-digital converter (ADC). By using subthreshold-biased transistors, the differential current-mode SAR ADC significantly saves power and reduces sensitivity to supply voltage and clock variation. The 8-bit 1-kS/s CDC designed in 0.35-μm CMOS exhibits a capacitance sensing range from 1.5 to 20 pF while consuming a total power of 0.8 μW. The ENOB of the current SAR ADC is 7.46.
DOI	10.1109/BioCAS.2012.6418416
URL	View the original
WOS Research Area	Computer Science ; Engineering
WOS Subject	Computer Science, Information Systems ; Engineering, Biomedical ; Engineering, Electrical & Electronic
WOS ID	WOS:000316563200111
Scopus ID	2-s2.0-84874178326
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	THE STATE KEY LABORATORY OF ANALOG AND MIXED-SIGNAL VLSI (UNIVERSITY OF MACAU) Faculty of Science and Technology INSTITUTE OF MICROELECTRONICS DEPARTMENT OF ELECTRICAL AND COMPUTER ENGINEERING
Affiliation	1.The State Key Laboratory of Analog and Mixed-Signal VLSI, University of Macau, Macao, China 2.On leave from Instituto Superior Técnico (IST)/TU of Lisbon, Portugal
First Author Affilication	University of Macau
Recommended Citation GB/T 7714	Yanjie Xiao,Tantan Zhang,Pui-In Mak,et al. A 0.8 μw 8-bit 1.5∼20-pF-input-range capacitance-to-digital converter for lab-on-chip digital microfluidics systems[C], 2012, 384-387.
APA	Yanjie Xiao., Tantan Zhang., Pui-In Mak., Man-Kay Law., & Rui P. Martins (2012). A 0.8 μw 8-bit 1.5∼20-pF-input-range capacitance-to-digital converter for lab-on-chip digital microfluidics systems. 2012 IEEE Biomedical Circuits and Systems Conference (BioCAS), 384-387.

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