数模转换器构成的可编程放大器  

The Programmble Amplifier With D—A Converter

作　　者：张学东[1] 

机构地区：[1]鞍山钢铁学院自控系

出　　处：《辽宁科技大学学报》1992年第3期48-50,共3页Journal of University of Science and Technology Liaoning

摘　　要：介绍了一种实用的数模转换器构成的可编程放大器。该放大器利用外接参考电源及无放大器类的DA转换器,以参考电压端为输入信号端,外加入大器反馈电阻产生较大的电压增益,从而完成了大的动态范围多级增益的可编程放大器。The paper deals with a programmble amplifier which consists of a D—A converter. The amplifier uses a kind of D—A converters which have an external reference voltage terminal and no operational amplifier, with the reference voltage terminal as inpvt terminal and added feedback resistence to get high voltage gain, to realize the programmble amplifier with large swing range, multi-caseades gains.

关 键 词：数模转换器 运算放大器 可编程放大器 

分 类 号：TN722.77[电子电信—电路与系统]