A low noise CMOS readout front end for MEMs BioPotential sensor applications

In this paper, a low-noise CMOS readout front end for biopotential acquisition applications is presented. The proposed circuit, implemented using 130 nm standard CMOS process, has a thermal noise floor of 10 nV/√Hz, a corner frequency of 300 mHz, and dissipates 3.2μW of power when powered using a 1 V supply. The designed circuit occupies a die area of 0.007mm2 and thus renders itself as an excellent candidate for acquiring biopotential signals through MEMS sensors.

[1]  Ramon Pallàs-Areny,et al.  A novel fully differential biopotential amplifier with DC suppression , 2004, IEEE Transactions on Biomedical Engineering.

[2]  Jr. W.M. Leach,et al.  Fundamentals of low-noise analog circuit design , 1994, Proc. IEEE.

[3]  Gabor C. Temes,et al.  Circuit techniques for reducing the effects of op-amp imperfections: autozeroing, correlated double sampling, and chopper stabilization , 1996, Proc. IEEE.

[4]  Rui Escadas Martins,et al.  A CMOS IC for portable EEG acquisition systems , 1998, IMTC/98 Conference Proceedings. IEEE Instrumentation and Measurement Technology Conference. Where Instrumentation is Going (Cat. No.98CH36222).

[5]  Refet Firat Yazicioglu,et al.  A 60 $\mu$W 60 nV/$\surd$Hz Readout Front-End for Portable Biopotential Acquisition Systems , 2007, IEEE Journal of Solid-State Circuits.

[6]  Marcel J. M. Pelgrom,et al.  Matching properties of MOS transistors , 1989 .

[7]  Phillip E Allen,et al.  CMOS Analog Circuit Design , 1987 .

[8]  Rahul Sarpeshkar,et al.  A Micropower Electrocardiogram Amplifier , 2009, IEEE Transactions on Biomedical Circuits and Systems.

[9]  Robert G. Meyer,et al.  Analysis and Design of Analog Integrated Circuits , 1993 .

[10]  M. Degrauwe,et al.  A Micropower CMOS-Instrumentation Amplifier , 1985, IEEE Journal of Solid-State Circuits.

[11]  P. K. Chan,et al.  A CMOS analog front-end IC for portable EEG/ECG monitoring applications , 2005, IEEE Transactions on Circuits and Systems I: Regular Papers.

[12]  Johan H. Huijsing,et al.  Operational Amplifiers - Theory and Design , 2000 .

[13]  Franziska Hoffmann,et al.  Design Of Analog Cmos Integrated Circuits , 2016 .

[14]  T. Jung,et al.  Using novel MEMS EEG sensors in detecting drowsiness application , 2006, 2006 IEEE Biomedical Circuits and Systems Conference.

[15]  Franco Maloberti,et al.  Analog Design for CMOS VLSI Systems , 2001 .