Wide Range High Precision CMOS Exponential Circuit Based on Linear Least Squares Approach

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dc.contributor.authorSaatlo, Ali Naderi
dc.contributor.authorOzoguz, Serdar
dc.coverage.issue4cs
dc.coverage.volume27cs
dc.date.accessioned2020-04-21T09:37:18Z
dc.date.available2020-04-21T09:37:18Z
dc.date.issued2018-12cs
dc.description.abstractA new strategy to implement exponential circuit in CMOS technology is presented in this paper. The proposed method is based on the new approximation function optimized by linear least squares approach to extend the output dynamic range. The current mode method is employed for realization of circuits, because of simple circuitry and intuitive topology. Unlike to the some reported circuits which were designed in the subthreshold region, the proposed design operates in the saturation region which provides acceptable bandwidth for the circuit. In order to validate the circuit performance, the post layout simulation results are presented using HSPICE and Cadence with TSMC level 49 (BSIM3v3) parameters for 0.18 μm CMOS technology. The results demonstrate 78 dB output dynamic range with the linearity error less than ±0.5 dB which shows a remarkable improvement in comparison with previously reported works. A bandwidth of 67 MHz, maximum power consumption of 0.326 mW under supply voltage of 1.5 V, and 0.77% error for temperature variations are further achievement of the design.en
dc.formattextcs
dc.format.extent1092-1099cs
dc.format.mimetypeapplication/pdfen
dc.identifier.citationRadioengineering. 2018 vol. 27, č. 4, s. 1092-1099. ISSN 1210-2512cs
dc.identifier.doi10.13164/re.2018.1092en
dc.identifier.issn1210-2512
dc.identifier.urihttp://hdl.handle.net/11012/186808
dc.language.isoencs
dc.publisherSpolečnost pro radioelektronické inženýrstvícs
dc.relation.ispartofRadioengineeringcs
dc.relation.urihttps://www.radioeng.cz/fulltexts/2018/18_04_1092_1099.pdfcs
dc.rightsCreative Commons Attribution 4.0 International licenseen
dc.rights.accessopenAccessen
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/en
dc.subjectExponential functionen
dc.subjectnew approximationen
dc.subjectanalog circuiten
dc.subjecthigh precisionen
dc.titleWide Range High Precision CMOS Exponential Circuit Based on Linear Least Squares Approachen
dc.type.driverarticleen
dc.type.statusPeer-revieweden
dc.type.versionpublishedVersionen
eprints.affiliatedInstitution.facultyFakulta eletrotechniky a komunikačních technologiícs
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