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Erschienen in:
2013 | OriginalPaper | Buchkapitel
Design of Cascode-Based Transconductance Amplifiers with Low-Gain PVT Variability and Gain Enhancement Using a Body-Biasing Technique
verfasst von : Nuno Pereira, Luis B. Oliveira, João Goes
Erschienen in: Technological Innovation for the Internet of Things
Verlag: Springer Berlin Heidelberg
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A body-biasing compensation scheme based on two proportional-to-absolute-temperature (PTAT) circuits is proposed to reduce the PVT variability of the DC gain of cascode amplifiers. A brief description of a basic PTAT is given as well as its application to cascode-based operational transconductance amplifiers. Simulation results show that the proposed compensated circuit amplifier exhibit a (DC) gain variability smaller than the original (uncompensated) circuit, while reaching a gain enhancement of about 3 dB.