一种性能优良的全程控生物电前置放大器  

A Full Programable Bioelectric Pre-Amplifier With High Performance

作　　者：刘新明[1] 曹新华[1] 刘文胜[1] 蒋大宗[1] 

机构地区：[1]西安交通大学生物医学工程研究所

出　　处：《北京生物医学工程》1996年第2期71-73,共3页Beijing Biomedical Engineering

摘　　要：本文介绍了一种性能优良的全程控生物电前置放大器。电路中分别使用模拟开关及开关电容滤波器完成放大器的增益调节和精密低通滤波。该电路除了具有低噪声、高输入阻抗和高共模抑制比外，还具有体积小、可靠性高、性能稳定、无机械噪声等优点，适用于微机化和小型生理信息检测系统。A Full programable bioelectric pre-amplifier with high performance is introduced in this paper. Both analog switches and switched-capacitor filter are used to achieve gain control and precision low-pass filting respectively. Besides low noise, high input impedance and CMRR,this pre-amplifier features small size, high reliability and stability, no mechanical switched noise, and is suitable for micro-computerized physiologic signal acquisition system.

关 键 词：程控 生物电信号 放大器 开关电容 滤波器 

分 类 号：R318.04[医药卫生—生物医学工程] Q64[医药卫生—基础医学]