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A 110dB-CMRR 100dB-PSRR multi-channel neural-recording amplifier system using differentially regulated rejection ratio enhancement in 0.18μm CMOS
- A 110dB-CMRR 100dB-PSRR multi-channel neural-recording amplifier system using differentially regulated rejection ratio enhancement in 0.18μm CMOS
- Lee, Se Hwan; George, Arup Kocheethra; Lee, Taeju; Chu, Jun-Uk; Han, Sungmin; Kim, Ji-Hoon; Je, Minkyu; Lee, Jung Hyup
- DGIST Authors
- Lee, Jung Hyup
- Issue Date
- 65th IEEE International Solid-State Circuits Conference, ISSCC 2018, 472-474
- 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 . © 2018 IEEE.
- Institute of Electrical and Electronics Engineers Inc.
- Related Researcher
Integrated Nano-Systems Lab
Analog and Mixed Signal IC Design; Smart Sensor Systems; Bio-medical ICs and Body Channel Communication Systems
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- Department of Information and Communication EngineeringIntegrated Nano-Systems Lab2. Conference Papers
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