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dc.contributor.authorOmran, Hesham
dc.contributor.authorArsalan, Muhammad
dc.contributor.authorSalama, Khaled N.
dc.date.accessioned2014-06-19T18:31:50Z
dc.date.available2014-06-19T18:31:50Z
dc.date.issued2014-05-23
dc.identifier.citationOmran H, Arsalan M, Salama KN (2014) An integrated energy-efficient capacitive sensor digital interface circuit. Sensors and Actuators A: Physical 216: 43-51. doi:10.1016/j.sna.2014.04.035.
dc.identifier.issn09244247
dc.identifier.doi10.1016/j.sna.2014.04.035
dc.identifier.urihttp://hdl.handle.net/10754/322003
dc.description.abstractIn this paper, we propose an energy-efficient 13-bit capacitive sensor interface circuit. The proposed design fully relies on successive approximation algorithm, which eliminates the need for oversampling and digital decimation filtering, and thus low-power consumption is achieved. The proposed architecture employs a charge amplifier stage to acheive parasitic insensitive operation and fine absolute resolution. Moreover, the output code is not affected by offset voltages or charge injection. The successive approximation algorithm is implemented in the capacitance-domain using a coarse-fine programmable capacitor array, which allows digitizing wide capacitance range in compact area. Analysis for the maximum achievable resolution due to mismatch is provided. The proposed design is insensitive to any reference voltage or current which translates to low temperature sensitivity. The operation of a prototype fabricated in a standard CMOS technology is experimentally verified using both on-chip and off-chip capacitive sensors. Compared to similar prior work, the fabricated prototype achieves and excellent energy efficiency of 34 pJ/step.
dc.language.isoen
dc.publisherElsevier BV
dc.relation.urlhttp://linkinghub.elsevier.com/retrieve/pii/S0924424714002180
dc.rightsArchived with thanks to Sensors and Actuators A: Physical
dc.subjectCDC
dc.subjectADC
dc.titleAn integrated energy-efficient capacitive sensor digital interface circuit
dc.typeArticle
dc.contributor.departmentComputer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division
dc.contributor.departmentElectrical Engineering Program
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Division
dc.contributor.departmentSensors Lab
dc.identifier.journalSensors and Actuators A: Physical
dc.eprint.versionPre-print
dc.contributor.institutionEngineering Mathematics Department, Faculty of Engineering, Cairo University, Giza, Egypt
dc.contributor.affiliationKing Abdullah University of Science and Technology (KAUST)
kaust.personOmran, Hesham
kaust.personArsalan, Muhammad
kaust.personSalama, Khaled N.
refterms.dateFOA2018-06-13T14:27:38Z
dc.date.published-online2014-05-23
dc.date.published-print2014-09


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