摘要
以89C52单片机系统为控制核心,利用低噪声、高速、高频宽带集成运算放大器OPA660和CPLD控制系统,设计制作了一种可编程的低漂移、低输入阻抗、高共模抑制比的精密宽带放大器。测试结果表明,该设计可提高差动输入阻抗和共模抑制比以及系统的带负载能力。
A programmable precision measuring differential amplifier with low noise, low drift, high input impedance and high common broad band ratio was developed. It takes the system SCM 89C52 as the digital control unit and uses the controlling system characterized in low -noise, high -precise, high -speed operational amplifier OPA660 and CPLD. The result indicates that the design can improve the differential input impedance and a common broad band ratio as well as the load capacity of the system.
出处
《武汉理工大学学报（信息与管理工程版）》
CAS
2008年第3期378-381,385,共5页
Journal of Wuhan University of Technology：Information & Management Engineering
基金
甘肃省教育厅科研基金资助项目(0611B-04)
关键词
宽带运算放大器
AGC
稳压电源
broadband integrated operational amplifier
AGC
regulated power supply
