该结构不需要任何精确匹配的电阻就能达到高的共模抑制比，并且其带宽不受带宽增益积的限制。
It does not need any matched components to reach high CMRR and its bandwidth is not gain-bandwidth product limited.
仪表放大器电路以其高输入阻抗、高共模抑制比、低漂移等特点在传感器输出的小信号放大领域得到了广泛的应用。
Instrumental amplifiers with high input impedance, high CMRR and low drift are widely used in the small signal amplifying field.
本文研究了几种常用仪表放大器电路结构，发现多需通过激光调阻技术来提高电 阻网络的匹配精度以达到高的共模抑制比。
The fact that most of these topologies need laser-trimming technique to improve the match precision to reach high CMRR is found after investigating several instrumentation amplifier topologies.
具体设计内容包括：设计具有输入阻抗大、高增益和高共模抑制比的脑电信号调理电路；
The main design work as follow: the former disposal circuits were designed, and the circuit possesses very high input resistance, common-mode rejection and voltage gain;
具体设计内容包括：设计具有输入阻抗大、高增益和高共模抑制比的脑电信号调理电路；
The main design work as follow: the former disposal circuits were designed, and the circuit possesses very high input resistance, common-mode rejection and voltage gain;
应用推荐