A low-voltage wide-swing programmable-gain current amplifier

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dc.contributor.authorde Lima, J. A.
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2014-05-20T15:22:48Z
dc.date.available2014-05-20T15:22:48Z
dc.date.issued2004-12-01
dc.description.abstractA CMOS low-voltage, wide-swing continuous-time current amplifier is presented. Exhibiting an open-loop architecture, the circuit is composed of transresistance and transconductance stages built upon triode-operating transistors. In addition to an extended dynamic range, the current gain can be programmed within good accuracy by a rapport involving only transistor geometries and tuning biases. Low temperature-drift on gain setting is then expected.In accordance with a 0.35 mum n-well CMOS fabrication process and a single 1.1 V-supply, a balanced current-amplifier is designed for a programmable gain-range of 6 - 34 dB and optimized with respect to dynamic range. Simulated results from PSPICE and Bsim3v3 models indicate, for a 100 muA(pp)-output current, a THD of 0.96 and 1.87% at 1 KHz and 100 KHz, respectively. Input noise is 120 pArootHz @ 10 Hz, with S/N = 63.2 dB @ 1%-THD. At maximum gain, total quiescent consumption is 334 muW. Measurements from a prototyped amplifier reveal a gain-interval of 4.8-33.1 dB and a maximum current swing of 120 muA(pp). The current-amplifier bandwidth is above 1 MHz.en
dc.description.affiliationUniv Estadual Paulista, Dept Elect Engn, Lab VSLI Design & Instrumentat, BR-12516410 Guaratingueta, SP, Brazil
dc.description.affiliationUnespUniv Estadual Paulista, Dept Elect Engn, Lab VSLI Design & Instrumentat, BR-12516410 Guaratingueta, SP, Brazil
dc.format.extent147-157
dc.identifierhttp://dx.doi.org/10.1023/B:ALOG.0000041632.20239.2c
dc.identifier.citationAnalog Integrated Circuits and Signal Processing. Dordrecht: Kluwer Academic Publ, v. 41, n. 2-3, p. 147-157, 2004.
dc.identifier.doi10.1023/B:ALOG.0000041632.20239.2c
dc.identifier.issn0925-1030
dc.identifier.urihttp://hdl.handle.net/11449/33714
dc.identifier.wosWOS:000223914200006
dc.language.isoeng
dc.publisherKluwer Academic Publ
dc.relation.ispartofAnalog Integrated Circuits and Signal Processing
dc.relation.ispartofjcr0.800
dc.relation.ispartofsjr0,211
dc.rights.accessRightsAcesso restrito
dc.sourceWeb of Science
dc.subjectlow-voltage current amplifierpt
dc.subjectcurrent-mode designpt
dc.subjectprogrammable-gain amplifierpt
dc.subjecttriode-MOSFET circuitspt
dc.titleA low-voltage wide-swing programmable-gain current amplifieren
dc.typeArtigo
dcterms.licensehttp://www.springer.com/open+access/authors+rights
dcterms.rightsHolderKluwer Academic Publ
unesp.campusUniversidade Estadual Paulista (Unesp), Faculdade de Arquitetura, Artes, Comunicação e Design, Baurupt
unesp.departmentDesign - FAACpt

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Bauru - FAAC - Faculdade de Arquitetura, Artes, Comunicação e Design