The noise performance of a high-speed capacitive-sensor interface based on a relaxation oscillator and a fast counter

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dc.contributor	Universitat Politècnica de Catalunya. Departament d'Enginyeria Electrònica
dc.contributor	Universitat Politècnica de Catalunya. GRUP ISI - Grup d'Instrumentació, Sensors i Interfícies
dc.contributor.author	Gasulla Forner, Manuel
dc.contributor.author	Li, Xiujun
dc.contributor.author	Meijer, Gerard C. M.
dc.date	2004
dc.identifier.citation	Gasulla Forner, M.; Li, Xiujun; Meijer, Gerard C. M. The noise performance of a high-speed capacitive-sensor interface based on a relaxation oscillator and a fast counter. IEEE Transactions On Instrumentation and Measurement, 2005, Vol. 54, No. 5, 1934-1940
dc.identifier.citation	0018-9456
dc.identifier.uri	http://hdl.handle.net/2117/1265
dc.language.iso	eng
dc.publisher	Institute of Electrical and Electronics Engineers
dc.rights	info:eu-repo/semantics/openAccess
dc.subject	Àrees temàtiques de la UPC::Enginyeria electrònica::Instrumentació i mesura::Sensors i actuadors
dc.subject	Àrees temàtiques de la UPC::Enginyeria electrònica::Microelectrònica
dc.subject	Noise
dc.subject	Transducers
dc.subject	Relaxation oscillators
dc.subject	Detectors
dc.subject	Capacitance measurement
dc.subject	Capacitance transducers
dc.subject	Jitter
dc.subject	Oscillator noise
dc.subject	Relaxation oscillator
dc.subject	Transductors
dc.subject	Soroll
dc.subject	Oscil·ladors de relaxació
dc.title	The noise performance of a high-speed capacitive-sensor interface based on a relaxation oscillator and a fast counter
dc.type	info:eu-repo/semantics/article
dc.description.abstract	This paper presents the analysis and experimental results on the noise performances of a capacitive-sensor interface. The interface is able to measure low capacitance values in the order of picofarads and is implemented with a simple relaxation oscillator, a fast counter, and a microcontroller. The goal is to find the criteria to implement a low-noise system, so that, even with a short measuring time, low noise can be obtained. Experimental results are performed in order to prove the validity of the theoretical analysis. The achieved resolution, with a measuring time of 20 ms, was better than 14.2 /spl times/ 10/sup -7/ for the measurement of a capacitance value of 2.2 pF.
dc.description.abstract	Peer Reviewed

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