多路弱信号放大转换电路的设计及选用  

The Design and Selection of Multiple Weak Signal Amplifier/Converter

作　　者：杨萃南[1] 

机构地区：[1]南通职业大学

出　　处：《自动化仪表》1989年第2期19-22,26,共5页Process Automation Instrumentation

摘　　要：直流弱信号的开关放大采集是测控系统中最难解决好的关键问题。文中介绍了三种可供选择的多路弱信号放大转换电路,即使用ADC0816芯片的;增益可由程序调节的高精度的;高抗干扰性能、高精度、低速的。In monitoring system, switching, amplifying and scanning of DC weak signals are critical subjects that can not be easily solved. In this paper, three kinds of circuits are introduced for option, i.e. one with ADC 0816 chip, one with high accuracy and programmable gain adjust-ment, and one with low speed, high accuracy and high anti-interference.

关 键 词：放大转换电路 弱信号 放大器 

分 类 号：TN721[电子电信—电路与系统]