A linearly-tunable OTA-C sinusoidal oscillator for low-voltage applications

Detalhes bibliográficos
Autor(a) principal: De Lima, Jader A. [UNESP]
Data de Publicação: 2002
Tipo de documento: Artigo de conferência
Idioma: eng
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://dx.doi.org/10.1109/ISCAS.2002.1011011
http://hdl.handle.net/11449/66771
Resumo: A low-voltage, low-power OTA-C sinusoidal oscillator based on a triode-MOSFET transconductor is here discussed. The classical quadrature model is employed and the transconductor inherent nonlinear characteristic with input voltage is used as the amplitude-stabilization element. An external bias VTUNE linearly adjusts the oscillation frequency. According to a standard 0.8μm CMOS n-well process, a prototype was integrated, with an effective area of 0.28mm2. Experimental data validate the theoretical analysis. For a single 1.8V-supply and 100mV≤VTUNE≤250mV, the oscillation frequency fo ranges from 0.50MHz to 1.125MHz, with a nearly constant gain KVCO=4.16KHz/mV. Maximum output amplitude is 374mVpp @1.12MHz. THD is -41dB @321mVpp. Maximum average consumption is 355μW.
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spelling A linearly-tunable OTA-C sinusoidal oscillator for low-voltage applicationsCMOS integrated circuitsComputer simulationElectric network topologyIntegrated circuit layoutMOSFET devicesNumerical analysisQuadrature amplitude modulationTransconductanceTransfer functionsAmplitude stabilization elementCircuit complexityFinite source resistanceMaximum output amplitudeOscillation frequencyVariable frequency oscillatorsA low-voltage, low-power OTA-C sinusoidal oscillator based on a triode-MOSFET transconductor is here discussed. The classical quadrature model is employed and the transconductor inherent nonlinear characteristic with input voltage is used as the amplitude-stabilization element. An external bias VTUNE linearly adjusts the oscillation frequency. According to a standard 0.8μm CMOS n-well process, a prototype was integrated, with an effective area of 0.28mm2. Experimental data validate the theoretical analysis. For a single 1.8V-supply and 100mV≤VTUNE≤250mV, the oscillation frequency fo ranges from 0.50MHz to 1.125MHz, with a nearly constant gain KVCO=4.16KHz/mV. Maximum output amplitude is 374mVpp @1.12MHz. THD is -41dB @321mVpp. Maximum average consumption is 355μW.VLSI Design and Instrumental Electrical Engineering Dept Universidade Estadual Paulista, 12516-410 Guaratinguetá SPVLSI Design and Instrumental Electrical Engineering Dept Universidade Estadual Paulista, 12516-410 Guaratinguetá SPUniversidade Estadual Paulista (Unesp)De Lima, Jader A. [UNESP]2014-05-27T11:20:23Z2014-05-27T11:20:23Z2002-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/conferenceObjecthttp://dx.doi.org/10.1109/ISCAS.2002.1011011Proceedings - IEEE International Symposium on Circuits and Systems, v. 2.0271-4310http://hdl.handle.net/11449/6677110.1109/ISCAS.2002.1011011WOS:0001862807001042-s2.0-0036287115Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengProceedings - IEEE International Symposium on Circuits and Systems0,237info:eu-repo/semantics/openAccess2024-04-17T18:29:11Zoai:repositorio.unesp.br:11449/66771Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T16:16:27.440048Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv A linearly-tunable OTA-C sinusoidal oscillator for low-voltage applications
title A linearly-tunable OTA-C sinusoidal oscillator for low-voltage applications
spellingShingle A linearly-tunable OTA-C sinusoidal oscillator for low-voltage applications
De Lima, Jader A. [UNESP]
CMOS integrated circuits
Computer simulation
Electric network topology
Integrated circuit layout
MOSFET devices
Numerical analysis
Quadrature amplitude modulation
Transconductance
Transfer functions
Amplitude stabilization element
Circuit complexity
Finite source resistance
Maximum output amplitude
Oscillation frequency
Variable frequency oscillators
title_short A linearly-tunable OTA-C sinusoidal oscillator for low-voltage applications
title_full A linearly-tunable OTA-C sinusoidal oscillator for low-voltage applications
title_fullStr A linearly-tunable OTA-C sinusoidal oscillator for low-voltage applications
title_full_unstemmed A linearly-tunable OTA-C sinusoidal oscillator for low-voltage applications
title_sort A linearly-tunable OTA-C sinusoidal oscillator for low-voltage applications
author De Lima, Jader A. [UNESP]
author_facet De Lima, Jader A. [UNESP]
author_role author
dc.contributor.none.fl_str_mv Universidade Estadual Paulista (Unesp)
dc.contributor.author.fl_str_mv De Lima, Jader A. [UNESP]
dc.subject.por.fl_str_mv CMOS integrated circuits
Computer simulation
Electric network topology
Integrated circuit layout
MOSFET devices
Numerical analysis
Quadrature amplitude modulation
Transconductance
Transfer functions
Amplitude stabilization element
Circuit complexity
Finite source resistance
Maximum output amplitude
Oscillation frequency
Variable frequency oscillators
topic CMOS integrated circuits
Computer simulation
Electric network topology
Integrated circuit layout
MOSFET devices
Numerical analysis
Quadrature amplitude modulation
Transconductance
Transfer functions
Amplitude stabilization element
Circuit complexity
Finite source resistance
Maximum output amplitude
Oscillation frequency
Variable frequency oscillators
description A low-voltage, low-power OTA-C sinusoidal oscillator based on a triode-MOSFET transconductor is here discussed. The classical quadrature model is employed and the transconductor inherent nonlinear characteristic with input voltage is used as the amplitude-stabilization element. An external bias VTUNE linearly adjusts the oscillation frequency. According to a standard 0.8μm CMOS n-well process, a prototype was integrated, with an effective area of 0.28mm2. Experimental data validate the theoretical analysis. For a single 1.8V-supply and 100mV≤VTUNE≤250mV, the oscillation frequency fo ranges from 0.50MHz to 1.125MHz, with a nearly constant gain KVCO=4.16KHz/mV. Maximum output amplitude is 374mVpp @1.12MHz. THD is -41dB @321mVpp. Maximum average consumption is 355μW.
publishDate 2002
dc.date.none.fl_str_mv 2002-01-01
2014-05-27T11:20:23Z
2014-05-27T11:20:23Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/conferenceObject
format conferenceObject
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://dx.doi.org/10.1109/ISCAS.2002.1011011
Proceedings - IEEE International Symposium on Circuits and Systems, v. 2.
0271-4310
http://hdl.handle.net/11449/66771
10.1109/ISCAS.2002.1011011
WOS:000186280700104
2-s2.0-0036287115
url http://dx.doi.org/10.1109/ISCAS.2002.1011011
http://hdl.handle.net/11449/66771
identifier_str_mv Proceedings - IEEE International Symposium on Circuits and Systems, v. 2.
0271-4310
10.1109/ISCAS.2002.1011011
WOS:000186280700104
2-s2.0-0036287115
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Proceedings - IEEE International Symposium on Circuits and Systems
0,237
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.source.none.fl_str_mv Scopus
reponame:Repositório Institucional da UNESP
instname:Universidade Estadual Paulista (UNESP)
instacron:UNESP
instname_str Universidade Estadual Paulista (UNESP)
instacron_str UNESP
institution UNESP
reponame_str Repositório Institucional da UNESP
collection Repositório Institucional da UNESP
repository.name.fl_str_mv Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)
repository.mail.fl_str_mv
_version_ 1808128628218658816

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