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Algueta-Miguel, Jose M.

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https://academica-e.unavarra.es/handle/2454/48494

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Algueta-Miguel

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Jose M.

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Ingeniería Eléctrica, Electrónica y de Comunicación

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0000-0001-9323-4516

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8574

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Item Type: Publication × Author: Algueta-Miguel, Jose M. × Author: Garde Luque, María Pilar × Subject: Amplifiers ×

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    PublicationOpen Access
    Enhanced single-stage folded cascode OTA suitable for large capacitive loads
    (IEEE, 2018) López Martín, Antonio; Garde Luque, María Pilar; Algueta-Miguel, Jose M.; Cruz Blas, Carlos Aristóteles de la; Carvajal, Ramón G.; Ramírez-Angulo, Jaime; Institute of Smart Cities - ISC
    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.