| 新型4通道单电源低功耗程控接口脑电放大器的研制 |
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| 引用本文： | 詹彤,张健雄. 新型4通道单电源低功耗程控接口脑电放大器的研制[J]. 医疗装备, 2004, 17(7): 4-7 |
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| 作者姓名： | 詹彤 张健雄 |
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| 作者单位： | 广东技术师范学院工业中心,广东,广州,510665 |
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| 摘 要： | 本脑电放大器针对现有同类电路缺点进行改进，采用了最新一代高性能模拟与混合信号集成电路芯片，优化了电路结构并通过精细的电路工艺措施实现了噪声电压1．9μVp-p、共模抑制比100dB、输入阻抗80MΩ、基线漂移小、单电源5V供电和工作电流小于10mA等电路指标，并实现了增益控制和滤波控制的数字化接口。1年的应用表明该放大器安全省电、体积小、结构简单、性能稳定，非常适合作为便携式智能型脑电图仪器的前端。
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| 关 键 词： | 4通道单 电源低功耗 程控接口 脑电放大器 电路结构 脑电图 |
| 文章编号： | 1002-2376(2004)07-0004-04 |
| 修稿时间： | 2004-04-29 |
A Design of 4 - channel Low- Power Single - Supply EEG Amplifier with Digital Interface |
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| ZHAN Tong ZHANG Jian-xiong. A Design of 4 - channel Low- Power Single - Supply EEG Amplifier with Digital Interface[J]. Medical Equipment, 2004, 17(7): 4-7 |
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| Authors: | ZHAN Tong ZHANG Jian-xiong |
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| Abstract: | A design for a novel 4-channel Low-Power Single-Supply EEG amplifier is presented which eliminates several problems in exisiting designs and achives the same high performance in CMRR and input impedance etc.By applying state-of-the-art ICs,the amplifier is be able to operate in single supply mode and has low power consumsion with a standard 5?V-logic interface to microcontroller.These make this amplifier well suited for uses as front end of portable brain machines. |
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| Keywords: | EEG Amplifier Driven right leg circuit CMRR lnstrumentation amplifier Switched capacitor filter |
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