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Title of Journal: Analog Integr Circ Sig Process

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Abbravation: Analog Integrated Circuits and Signal Processing

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Kluwer Academic Publishers

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DOI

10.1016/0140-6701(95)96447-k

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ISSN

1573-1979

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HighGain ClassAB OTA with Low Quiescent Current

Authors: Jeongjin Roh
Publish Date: 2006/02/27
Volume: 47, Issue: 2, Pages: 225-228
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Abstract

Highperformance operational transconductance amplifier OTA is designed for switchedcapacitor applications Without using a cascoded output stage which limits the voltage swing the output resistance is significantly increased for high DC gain by accurately controlling the output current Also the output stage has classAB operation so the overall power efficiency is improved With significantly low quiescent current the presented new OTA achieves higher DC gain than conventional OTAs Theoretical analysis and HSPICE simulations prove the performance of the new OTA

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