High accuracy potentiostat with wide dynamic range and linearity

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dc.authoridbatur, okan zafer/0000-0002-1585-1794
dc.authorwosidbatur, okan zafer/L-3251-2018
dc.contributor.authorToprak, Serdar
dc.contributor.authorVural, Revna Acar
dc.contributor.authorBatur, Okan Zafer
dc.date.accessioned2024-07-18T20:42:29Z
dc.date.available2024-07-18T20:42:29Z
dc.date.issued2021
dc.departmentİstanbul Bilgi Üniversitesien_US
dc.description.abstractElectrochemical measurement require potentiostat to ensure the operational stability during the sensing and conversion of the sensor signals. This article presents a potentiostat circuit with high linearity and accuracy bidirectional current readout circuit for a wide dynamic current range. A current conveyor circuit with a wide current range from +/- 50 nA to +/- 400 mu A is constructed by combining a low-noise current mirror based OTA and a regulated current mirror employing accurate and linear output characteristics. The potentiostat is designed in 0.18 mu m TSMC technology with +/- 0.9 V nominal power supply, and the results obtained are based on simulation and performed with Cadence (TM) tools. The potentiostat circuit achieves a minimum detectable current of 1 nA within current range of +/- 400 mu A. The detectable current range is 112 dB with R-2 linearity of 0.999999993 and maximum error of 1.3%. The input referred noise of the current conveyor is 24.48 fA/root Hz@1 kHz, and integrated referred noise is 0.912 pA within 0.01 Hz - 1 kHz bandwidth. The static power consumption of the potentiostat circuit is 1.993 mW. The control amplifier and the current readout circuit consume 1.98 mW and 13 mu W, respectively. The proposed circuit is capable of providing low noise and high accuracy current measurement with low power consumption and highly linear output characteristics.en_US
dc.identifier.doi10.1016/j.aeue.2021.154018
dc.identifier.issn1434-8411
dc.identifier.issn1618-0399
dc.identifier.scopus2-s2.0-85118327634en_US
dc.identifier.scopusqualityQ2en_US
dc.identifier.urihttps://doi.org/10.1016/j.aeue.2021.154018
dc.identifier.urihttps://hdl.handle.net/11411/7285
dc.identifier.volume142en_US
dc.identifier.wosWOS:000717298200009en_US
dc.identifier.wosqualityQ2en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherElsevier Gmbhen_US
dc.relation.ispartofAeu-International Journal of Electronics and Communicationsen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectPotentiostaten_US
dc.subjectBidirectional Current Conveyoren_US
dc.subjectCmos İntegrated Circuit Designen_US
dc.subjectVoltammetryen_US
dc.subjectElectrochemical Sensorsen_US
dc.subjectDesignen_US
dc.subjectNoiseen_US
dc.titleHigh accuracy potentiostat with wide dynamic range and linearity
dc.typeArticle

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