摘要
比较了程控增益放大器的各种不同构成方式,介绍了一种采用多路数字电位器AD8402的偏置可调程控增益系统,同时给出了该系统的硬件原理和软件设计,并指出AD8402使用中的几个注意事项。该设计方案硬件结构简单,性价比高,具有一定的通用性。
Compared with some other architectures of different digital potentiometers, the gain-programmed amplifier based on digital potentiometer AD8402, which can set offset voltage, is introduced. The hardware principle and software design of this method are introduced. And some notices for using AD8402 are given. The gain-programmed amplifier is of simple hardware architecture high quality, low price and widespread availability.
出处
《科学技术与工程》
2007年第7期1458-1461,共4页
Science Technology and Engineering
