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Accurate dynamic-feedback CMOS cross-quad suitable for low-voltage operation

Opened Access Accurate dynamic-feedback CMOS cross-quad suitable for low-voltage operation
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Autor: Calvo, Belén
López Martín, Antonio
Ramírez Angulo, Jaime
González Carvajal, Ramón
Departamento: Universidad de Sevilla. Departamento de Ingeniería Electrónica
Fecha: 2009
Publicado en: XXIV Conference on Design of Circuits and Integrated Systems: Zaragoza, 18-20 de noviembre 2009
Tipo de documento: Ponencia
Resumen: This paper presents the implementation of a crossquad circuit suitable for low-voltage operation. The proposed cell exploits a dynamic positive feedback gm boosting technique to achieve linear voltage-to-current conversion, while it manages to work with low-voltage with no extra bias current and minimal additional hardware. Results for a 0.5 m CMOS implementation supplied at 3 V show a 0.972 % voltage-tocurrent accuracy, improving the 0.867 % accuracy of a previously reported cross-quad topology also suitable for lowvoltage operation which is based on folded transistors.
Tamaño: 213.7Kb
Formato: PDF

URI: http://hdl.handle.net/11441/23444

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