可编程仪表放大器的优化设计  

The optimizing design of the programmable instrumentation amplifier

作　　者：沙占友 安国臣[1] 于国庆[1] 

机构地区：[1]河北科技大学信息科学与工程学院,石家庄050054

出　　处：《电测与仪表》2007年第6期37-39,共3页Electrical Measurement & Instrumentation

摘　　要：可编程仪表放大器的特点是可通过单片机对其增益调节范围进行编程。近年来随着数字电位器的迅速发展和推广应用,为实现可编程仪表放大器的优化设计创造了条件。本文首先介绍数字电位器的基本原理,然后重点阐述可编程仪表放大器的电路设计及应用实例,最后介绍了一种双向可编程增益放大器的设计。The feature of the programmable instrumentation amplifier is that the gain adjustment range can be setup by single chip microcomputer. With the development and application of the digitally controlled potentiometers （DCP） recently, it is possible to realizing the optimizing design of the programmab the principle of the DCP. And then le instrumentation amplifier. This paper firstly introduces expatiates the circuit design and application example of the programmable instrumentation amplifier. Finally a type of bi-direction programmable gain amplifier is introduced.

关 键 词：数字电位器 可编程 仪表放大器 增益 

分 类 号：TN722[电子电信—电路与系统]