A single current conveyor-based low voltage low power bootstrap circuit for ElectroCardioGraphy and ElectroEncephaloGraphy acquisition systems

Authors:
V. Stornelli;G. Ferri
Affiliations:
Department of Electrical and Information Engineering, University of L'Aquila, L'Aquila, Italy 67040;Department of Electrical and Information Engineering, University of L'Aquila, L'Aquila, Italy 67040
Venue:
Analog Integrated Circuits and Signal Processing
Year:
2014

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Abstract

In this letter we propose a novel low voltage and low power single-CCII bootstrap circuit specifically designed to be implemented as input stage in ElectroCardioGraphy (ECG) or ElectroEncephaloGraphy (EEG) acquisition systems. The proposed circuit implements only a second generation current conveyor that has been designed to obtain, at X and Z nodes, reduced parasitic impedances, so improving CCII performance. Moreover, simulation results are also presented for a two electrodes ECG system. The circuit, designed in a standard 0.35 μm CMOS technology, shows low voltage (1.5 V) low power (28 μW) characteristics, so it is particularly suitable for portable applications.