Binary Weighted DAC with 2-ξ Resistor Ratio

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dc.contributor.authorLekic, Nedjeljko
dc.contributor.authorMijanovic, Zoran
dc.contributor.authorDragovic-Ivanovic, Rada
dc.contributor.authorStankovic, Ljubisa
dc.coverage.issue2cs
dc.coverage.volume27cs
dc.date.accessioned2018-06-18T12:49:19Z
dc.date.available2018-06-18T12:49:19Z
dc.date.issued2018-06cs
dc.description.abstractIn this paper we present a new digital analog converter (DAC) design, based on the binary weighted resistor network. The proposed design ensures high conversion accuracy using low precision resistors with ±1% ±2%, ±5%, ±10% and ±20% resistor tolerance. High accuracy is achieved due to better coverage of the analog domain of the transfer characteristic. In binary weighted converters the imprecision of resistors introduces positive and negative differential nonlinearities (DNL). Positive DNL causes gap in the analog domain of the transfer characteristic and negative DNL causes non-monotonicity. In the proposed solution we change the resistor ratio of the two consecutive DAC branches from 2 to 2-ξ, where ξ is small positive number. With this change, we intentionally introduce an additional negative DNL in order to entirely avoid the positive gap. Simulation results confirm that even with resistors tolerance of up to ±10%, we can achieve a converter with maximal gap in the transfer characteristic less than or around one LSB.en
dc.formattextcs
dc.format.extent501-509cs
dc.format.mimetypeapplication/pdfen
dc.identifier.citationRadioengineering. 2018 vol. 27, č. 2, s. 501-509. ISSN 1210-2512cs
dc.identifier.doi10.13164/re.2018.0501en
dc.identifier.issn1210-2512
dc.identifier.urihttp://hdl.handle.net/11012/83034
dc.language.isoencs
dc.publisherSpolečnost pro radioelektronické inženýrstvícs
dc.relation.ispartofRadioengineeringcs
dc.relation.urihttps://www.radioeng.cz/fulltexts/2018/18_02_0501_0509.pdfcs
dc.rightsCreative Commons Attribution 4.0 Internationalen
dc.rights.accessopenAccessen
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/en
dc.subjectBinary weighted DACen
dc.subjectconversion accuracyen
dc.subjectdifferential nonlinearityen
dc.subjectgap in transfer characteristicen
dc.subjectlookup tableen
dc.titleBinary Weighted DAC with 2-ξ Resistor Ratioen
dc.type.driverarticleen
dc.type.statusPeer-revieweden
dc.type.versionpublishedVersionen
eprints.affiliatedInstitution.facultyFakulta eletrotechniky a komunikačních technologiícs
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