Title
A 0.3 V, 56 dB DR, 100 Hz fourth order low-pass filter for ECG acquisition system.
Abstract
This paper proposes an extremely low voltage, low power bulk-driven voltage follower (BD-VF). As an application of the proposed BD-VF, a 4th order low-pass filter (LPF) with cutoff frequency adjustable from 50 Hz to 250 Hz is designed for electrocardiogram (ECG) acquisition systems. The filter is implemented in UMC 180 nm CMOS technology occupying only 0.03 mm2 area. Post layout simulation results show that the filter offers 56 dB dynamic range even with an extremely low supply voltage of 0.3 V. The total power consumption of the filter is 4.8 nW for a cutoff frequency of 100 Hz. The Figure-of-merit (FoM) and capacitance/pole of the filter are 5.7 × 10−15 and 2.2 pF respectively. The proposed filter offers the lowest FoM compared to the state-of-the-art nW-class filters.
Year
DOI
Venue
2019
10.1016/j.mejo.2019.104652
Microelectronics Journal
Keywords
DocType
Volume
Ultra low voltage,Electrocardiogram,Low power,Bulk-driven
Journal
94
ISSN
Citations 
PageRank 
0026-2692
0
0.34
References 
Authors
0
4
Name
Order
Citations
PageRank
Sreenivasulu Polineni100.34
Hanumantha Rao G.200.34
S. Rekha300.34
M. S. Bhat400.34