TY - GEN
T1 - A 110dB-CMRR 100dB-PSRR multi-channel neural-recording amplifier system using differentially regulated rejection ratio enhancement in 0.18μm CMOS
AU - Lee, Sehwan
AU - George, Arup K.
AU - Lee, Taeju
AU - Chu, Jun Uk
AU - Han, Sungmin
AU - Kim, Ji Hoon
AU - Je, Minkyu
AU - Lee, Junghyup
N1 - Funding Information:
This work was supported by the Basic Science Research Program (2017R1C1B2010672) and the Convergence Technology Development Program for Bionic Arm (2017M3C1B2048608) through the National Research Foundation of Korea as well as the DGIST R&D Program (17-BD-0404), all of them funded by the Korea government (MSIT).
Publisher Copyright:
© 2018 IEEE.
PY - 2018/3/8
Y1 - 2018/3/8
N2 - Multi-channel neural-recording amplifier systems have evolved into the method of choice for analyzing neurophysiological behavior, and are leading to a deeper understanding of the human brain [1-4]. Such systems operate from a noisy supply and ground, especially when they are powered wirelessly. As shown in Fig. 29.7.1, the amplifiers ought to be low-noise, low-power, and resilient against environmental noise and interferences that are capacitively coupled from the power lines (220V/60Hz). Specifications-wise, these requirements translate into high CMRR, TCMRR, and PSRR. TCMRR (total CMRR) is a more realistic specification than CMRR as it includes the effect of the impedances of both electrodes (Ze) and the amplifier input (ZCin) as well. In fact, the TCMRR should be >70dB for reliable detection of a 5μVrms neural signal [1].
AB - Multi-channel neural-recording amplifier systems have evolved into the method of choice for analyzing neurophysiological behavior, and are leading to a deeper understanding of the human brain [1-4]. Such systems operate from a noisy supply and ground, especially when they are powered wirelessly. As shown in Fig. 29.7.1, the amplifiers ought to be low-noise, low-power, and resilient against environmental noise and interferences that are capacitively coupled from the power lines (220V/60Hz). Specifications-wise, these requirements translate into high CMRR, TCMRR, and PSRR. TCMRR (total CMRR) is a more realistic specification than CMRR as it includes the effect of the impedances of both electrodes (Ze) and the amplifier input (ZCin) as well. In fact, the TCMRR should be >70dB for reliable detection of a 5μVrms neural signal [1].
UR - http://www.scopus.com/inward/record.url?scp=85046423949&partnerID=8YFLogxK
U2 - 10.1109/ISSCC.2018.8310389
DO - 10.1109/ISSCC.2018.8310389
M3 - Conference contribution
AN - SCOPUS:85046423949
T3 - Digest of Technical Papers - IEEE International Solid-State Circuits Conference
SP - 472
EP - 474
BT - 2018 IEEE International Solid-State Circuits Conference, ISSCC 2018
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 65th IEEE International Solid-State Circuits Conference, ISSCC 2018
Y2 - 11 February 2018 through 15 February 2018
ER -