A 0.3-V, 2.4-nW, and 100-Hz fourth-order LPF for ECG signal processing
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Date
2020
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John Wiley and Sons Ltd cs-journals@wiley.co.uk
Abstract
An ultra-low voltage, low power bulk-driven voltage follower (VF) is proposed in this paper. Further, it is exploited to design a fourth-order low-pass filter (LPF) for electrocardiogram (ECG) signal processing. The filter is designed in UMC 180-nm CMOS technology and operates with an ultra-low supply voltage of 0.3 V. It consumes an extremely low power of 2.4 nW for a cutoff frequency of 100 Hz. Results of post-layout simulation show that the proposed filter provides a dynamic range (DR) of 51.6 dB even from a 0.3-V supply voltage. The filter achieves a Figure-of-merit (FoM) of 4.7 × 10?15, which is better than many designs listed in the literature. © 2020 John Wiley & Sons, Ltd.
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Keywords
Biomedical signal processing, Buffer amplifiers, Cutoff frequency, Electrocardiography, ECG signal processing, Electrocardiogram signal, Figure of merit (FOM), Low supply voltages, Post layout simulation, Supply voltages, Ultra-low-voltage, Voltage follower, Low pass filters
Citation
International Journal of Circuit Theory and Applications, 2020, 48, 11, pp. 1853-1863