Title :
A wireless readout front-end device for portable EEG acquisition system
Author :
Yi-Chung Chen ; Zong-Han Hsieh ; Wai-Chi Fang
Author_Institution :
Dept. of Electron. Eng., Nat. Chiao Tung Univ., Hsinchu, Taiwan
Abstract :
In this paper, the 32-channel readout front-end device with a Bluetooth 2.0 module and a MSP430 ultra-low power microcontroller for portable Electroencephalograph (EEG) acquisition is presented. In addition to the consideration of low power, low noise, and high efficient chip area usage, the extendable readout front-end chip is presented with a design of chopper-stabilized differential difference amplifier (CHDDA) for high common mode rejection ratio (CMRR) and the 10-bit successive approximation register analog-to-digital converter (SAR-ADC) for high Signal-to-Noise Ratio (SNR). The power consumption of each readout chip is about 80.268 μW, and the total system is about 134.6 mW under the power supply of ±1.8 V.
Keywords :
Bluetooth; analogue-digital conversion; biomedical electronics; biomedical equipment; choppers (circuits); differential amplifiers; digital readout; electroencephalography; low noise amplifiers; microcontrollers; Bluetooth 2.0 module; CHDDA; CMRR; MSP430 ultralow power microcontroller; SAR-ADC; SNR; chopper-stabilized differential difference amplifier; common mode rejection ratio; portable EEG acquisition system; portable electroencephalograph acquisition system; power 134.6 mW; power 80.268 muW; power consumption; power supply; readout front-end chip; signal-to-noise ratio; successive approximation register analog-to-digital converter; voltage -1.8 V; voltage 1.8 V; wireless readout front-end device; Bluetooth; Brain modeling; Correlation; Delays; Electroencephalography; Wireless communication; Wireless sensor networks;
Conference_Titel :
Consumer Electronics (ISCE), 2013 IEEE 17th International Symposium on
Conference_Location :
Hsinchu
Print_ISBN :
978-1-4673-6198-9
DOI :
10.1109/ISCE.2013.6570196
