A low-voltage programmable-gain CMOS amplifier with very-low temperature-drift

A new topology for a LVLP variable-gain CMOS amplifier is presented. Inputand load-stage are built around triode-transconductors so that voltage-gain is fully defined by a linear relationship involving only device-geometries and biases. Excellent gain-accuracy, temperature-insensitivity and wide ran...

Descripción completa

Guardado en:
Detalles Bibliográficos
Autores principales: De Lima, Jader, Dualibe, Fortunato Carlos Augusto
Formato: Documento de conferencia
Lenguaje:Español
Publicado: 2001
Materias:
TA Ingeniería de asistencia técnica (General). Ingeniería Civil (General)
Acceso en línea:http://pa.bibdigital.ucc.edu.ar/3926/1/DC_DeLima_Dualibe.pdf
Aporte de:
Producción Académica Universidad Católica de Córdoba (UCCor) de Universidad Católica de Córdoba
id I38-R144-3926
record_format dspace
spelling I38-R144-39262025-05-20T18:15:04Z http://pa.bibdigital.ucc.edu.ar/3926/ A low-voltage programmable-gain CMOS amplifier with very-low temperature-drift De Lima, Jader Dualibe, Fortunato Carlos Augusto TA Ingeniería de asistencia técnica (General). Ingeniería Civil (General) A new topology for a LVLP variable-gain CMOS amplifier is presented. Inputand load-stage are built around triode-transconductors so that voltage-gain is fully defined by a linear relationship involving only device-geometries and biases. Excellent gain-accuracy, temperature-insensitivity and wide range of programmability are thus achieved. Moreover, adaptative biasing improves the common-mode voltage stability upon gain-adjusting. As an example, a 0-40 dB programmable-gain audio-amplifier is designed. Its performance is supported by a range of simulations. For I'DD=1.8 V and 20 dB-nominal gain, one has A/sub v/=19.97 dB, f/sub 3dB/=770 kHz and quiescent dissipation of 378 μW. Over temperatures from -25/spl deg/C to 125/spl deg/C, the 0.1 dB-bandwidth is 52 kHz. Dynamic-range is optimized to 57.2 dB and 42.6 dB for gains of 20 dB and 40 dB, respectively. THD figures correspond to -60.6 dB at V/sub out/=1 V pp and -79.7 dB at V/sub out/=0.5 Vpp. A nearly constant bandwidth for different gains is also attained. 2001-12-31 info:eu-repo/semantics/conferenceObject info:eu-repo/semantics/closedAccess application/pdf spa http://pa.bibdigital.ucc.edu.ar/3926/1/DC_DeLima_Dualibe.pdf De Lima, Jader ORCID: https://orcid.org/0000-0001-6123-7771 <https://orcid.org/0000-0001-6123-7771> and Dualibe, Fortunato Carlos Augusto ORCID: https://orcid.org/0000-0002-2889-315X <https://orcid.org/0000-0002-2889-315X> (2001) A low-voltage programmable-gain CMOS amplifier with very-low temperature-drift. In: IEEE International Symposium on Circuits and Systems, ISCAS. info:eu-repo/semantics/altIdentifier/doi/10.1109/ISCAS.2001.921934
institution Universidad Católica de Córdoba
institution_str I-38
repository_str R-144
collection Producción Académica Universidad Católica de Córdoba (UCCor)
language Español
orig_language_str_mv spa
topic TA Ingeniería de asistencia técnica (General). Ingeniería Civil (General)
spellingShingle TA Ingeniería de asistencia técnica (General). Ingeniería Civil (General)
De Lima, Jader
Dualibe, Fortunato Carlos Augusto
A low-voltage programmable-gain CMOS amplifier with very-low temperature-drift
topic_facet TA Ingeniería de asistencia técnica (General). Ingeniería Civil (General)
description A new topology for a LVLP variable-gain CMOS amplifier is presented. Inputand load-stage are built around triode-transconductors so that voltage-gain is fully defined by a linear relationship involving only device-geometries and biases. Excellent gain-accuracy, temperature-insensitivity and wide range of programmability are thus achieved. Moreover, adaptative biasing improves the common-mode voltage stability upon gain-adjusting. As an example, a 0-40 dB programmable-gain audio-amplifier is designed. Its performance is supported by a range of simulations. For I'DD=1.8 V and 20 dB-nominal gain, one has A/sub v/=19.97 dB, f/sub 3dB/=770 kHz and quiescent dissipation of 378 μW. Over temperatures from -25/spl deg/C to 125/spl deg/C, the 0.1 dB-bandwidth is 52 kHz. Dynamic-range is optimized to 57.2 dB and 42.6 dB for gains of 20 dB and 40 dB, respectively. THD figures correspond to -60.6 dB at V/sub out/=1 V pp and -79.7 dB at V/sub out/=0.5 Vpp. A nearly constant bandwidth for different gains is also attained.
format Documento de conferencia
author De Lima, Jader
Dualibe, Fortunato Carlos Augusto
author_facet De Lima, Jader
Dualibe, Fortunato Carlos Augusto
author_sort De Lima, Jader
title A low-voltage programmable-gain CMOS amplifier with very-low temperature-drift
title_short A low-voltage programmable-gain CMOS amplifier with very-low temperature-drift
title_full A low-voltage programmable-gain CMOS amplifier with very-low temperature-drift
title_fullStr A low-voltage programmable-gain CMOS amplifier with very-low temperature-drift
title_full_unstemmed A low-voltage programmable-gain CMOS amplifier with very-low temperature-drift
title_sort low-voltage programmable-gain cmos amplifier with very-low temperature-drift
publishDate 2001
url http://pa.bibdigital.ucc.edu.ar/3926/1/DC_DeLima_Dualibe.pdf
work_keys_str_mv AT delimajader alowvoltageprogrammablegaincmosamplifierwithverylowtemperaturedrift
AT dualibefortunatocarlosaugusto alowvoltageprogrammablegaincmosamplifierwithverylowtemperaturedrift
AT delimajader lowvoltageprogrammablegaincmosamplifierwithverylowtemperaturedrift
AT dualibefortunatocarlosaugusto lowvoltageprogrammablegaincmosamplifierwithverylowtemperaturedrift
_version_ 1834970036931919872

Ejemplares similares