Enhanced single-stage folded cascode OTA suitable for large capacitive loads
Fecha
2018Autor
Versión
Acceso abierto / Sarbide irekia
Tipo
Artículo / Artikulua
Versión
Versión aceptada / Onetsi den bertsioa
Identificador del proyecto
MINECO//TEC2013-47286-C3-2-R Gobierno de Navarra//PI016 ALM
Impacto
|
10.1109/TCSII.2017.2700060
Resumen
An enhanced single-stage folded cascode operational
transconductance amplifier able to drive large capacitive loads is
presented. Circuits that adaptively bias the input differential pair
and the current folding stage are employed, which provide class
AB operation with dynamic current boosting and increased gainbandwidth (GBW) product. Measurement results of a test chip
prototype fabricated ...
[++]
An enhanced single-stage folded cascode operational
transconductance amplifier able to drive large capacitive loads is
presented. Circuits that adaptively bias the input differential pair
and the current folding stage are employed, which provide class
AB operation with dynamic current boosting and increased gainbandwidth (GBW) product. Measurement results of a test chip
prototype fabricated in a 0.5-µm CMOS process show an increase
in slew rate and GBW by a factor of 30 and 15, respectively,
versus the class A version using the same supply voltage and bias
currents. Overhead in other performance metrics is small. [--]
Materias
Amplifiers,
Analog integrated circuits,
CMOS integrated circuits,
Class AB circuits
Editor
IEEE
Publicado en
IEEE Transactions on Circuits and Systems II: Express Briefs, vol. 65, no. 4, pp. 441-445, April 2018
Departamento
Universidad Pública de Navarra/Nafarroako Unibertsitate Publikoa. Institute of Smart Cities - ISC
Versión del editor
Entidades Financiadoras
This work was supported in part by the Spanish
Ministerio de Economía y Competitividad under Grant TEC2013-47286-C3-2,
and in part by the Gobierno de Navarra under Grant PI016 ALM