摘要
介绍了一种在单片机的控制下能实现对放大倍数进行自动调整，且输出结果在选定的范围之内变化的串行程控放大器．这种放大器采用了二分法子程序以提高放大倍数的调整速度，为后续的信号处理提供了条件．
This paper introduces a kind of serial program controlled amplifier. It can automatically change its amplification with the control of a single chip computer so that the output can vary within proper limits. Binary search is used to improve the speed of amplification change.
关键词
放大倍数
程控放大器
放大器
单片机控制
program controlled amplifier
control word
amplification
binary search
