4-Channel Asynchronous Bio-potential Recording System

被引：0
|
作者：
Tang, Wei [1 ]
Huang, Chenxi [1 ]
Kim, Dongsoo [1 ]
Martini, Berin [1 ]
Culurciello, Eugenio [1 ]
机构：
[1] Yale Univ, Dept Elect Engn, New Haven, CT 06520 USA
来源：
2010 IEEE INTERNATIONAL SYMPOSIUM ON CIRCUITS AND SYSTEMS | 2010年
关键词：
D O I：
暂无
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
We present a 4-channel bio-potential recording system using asynchronous delta analog-to-digital converter. The system is designed to reduce the amount of data in neurophysiological sensors. The circuit includes low-power low-noise amplifiers with asynchronous delta modulators. The analog front end offers a gain of 53dB within bandwidth of 200Hz-20kHz. In this asynchronous data converter, the minimum input-referred delta resolution is 4 mu V. The input-referred rms noise is 2 mu V. The system was fabricated with AMI 0.5 mu m CMOS technology. The chip size is 1.5mm by 1.5mm. The power consumption of the 4-channel system with 3.3V supply is 118.8 mu W in static state and 501.6 mu W with 240kbps data conversion rate. A graphic user interface was developed to monitor the transmitted signal in real time.
引用
收藏
页码：953 / 956
页数：4
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