A multisampling time-domain CMOS imager with synchronous readout circuit

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dc.contributor.authorDe Souza Campos, Fernando [UNESP]
dc.contributor.authorMarinov, Ognian
dc.contributor.authorFaramarzpour, Naser
dc.contributor.authorSaffih, Fayçal
dc.contributor.authorDeen, M. Jamal
dc.contributor.authorSwart, Jacobus W.
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionMcMaster University - CRL225
dc.contributor.institutionMcMaster University - ECE
dc.contributor.institutionMcMaster University - CRL224
dc.contributor.institutionMcMaster University - CRL226
dc.contributor.institutionUniversidade Estadual de Campinas (UNICAMP)
dc.date.accessioned2014-05-27T11:22:40Z
dc.date.available2014-05-27T11:22:40Z
dc.date.issued2007-12-01
dc.description.abstractA novel multisampling time-domain architecture for CMOS imagers with synchronous readout and wide dynamic range is proposed. The architecture was implemented in a prototype of imager with 32x32 pixel array fabricated in AMS CMOS 0.35νm and was characterized for sensitivity and color response. The pixel is composed of an n+/psub photodiode, a comparator and a D flip-flop having 16% fill-factor and 30νmx26νm dimensions. The multisampling architecture requires only a 1 bit per pixel memory instead of 8 bits which is typical for time-domain active pixel architectures. The advantage is that the number of transistors in the pixel is low, saving area and providing higher fill-factor. The maximum frame rate is analyzed as a function of number of bits and array size. The analysis shows that it is possible to achieve high frame rates and operation in video mode with 10 bits. Also, we present analysis for the impact of comparator offset voltage in the fixed pattern noise. Copyright 2007 ACM.en
dc.description.affiliationFEB - Unesp, Av. Eng. Luiz E. C. Coube 1401, Bauru - Sao Paulo
dc.description.affiliationMcMaster University - CRL225, 1280 Main Street West, Hamilton, ON
dc.description.affiliationMcMaster University - ECE, 1280 Main Street West, Hamilton, ON
dc.description.affiliationMcMaster University - CRL224, 1280 Main Street West, Hamilton, ON
dc.description.affiliationMcMaster University - CRL226, 1280 Main Street West, Hamilton, ON
dc.description.affiliationFEEC - Unicamp, Av Albert Einstein 400, Campinas - Sao Paulo
dc.description.affiliationUnespFEB - Unesp, Av. Eng. Luiz E. C. Coube 1401, Bauru - Sao Paulo
dc.format.extent53-58
dc.identifierhttp://dx.doi.org/10.1145/1284480.1284502
dc.identifier.citationProceedings - SBCCI 2007: 20th Symposium on Integrated Circuits and System Design, p. 53-58.
dc.identifier.doi10.1145/1284480.1284502
dc.identifier.lattes6668926182105107
dc.identifier.scopus2-s2.0-38049036277
dc.identifier.urihttp://hdl.handle.net/11449/70040
dc.identifier.wosWOS:000268635500009
dc.language.isoeng
dc.relation.ispartofProceedings - SBCCI 2007: 20th Symposium on Integrated Circuits and System Design
dc.rights.accessRightsAcesso aberto
dc.sourceScopus
dc.subjectActive pixel sensor
dc.subjectCMOS imager
dc.subjectDynamic range
dc.subjectFill-factor
dc.subjectCMOS integrated circuits
dc.subjectPhotodiodes
dc.subjectPixels
dc.subjectSensitivity analysis
dc.subjectSoftware prototyping
dc.subjectImaging systems
dc.titleA multisampling time-domain CMOS imager with synchronous readout circuiten
dc.typeTrabalho apresentado em evento
dcterms.licensehttp://www.acm.org/publications/copyright-statement
unesp.author.lattes6668926182105107
unesp.campusUniversidade Estadual Paulista (Unesp), Faculdade de Engenharia, Baurupt

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