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随着电子科学的蓬勃发展,集成电路技术正以惊人的速度不断取得进展和突破。进展的重要标志是大规模和超大规模集成电路正在日益推广应用。八十年代的一个重要发展趋势是各种电子系统的全面大规模集成化。传统的MOS大规模集成工艺过去仅限于微处理器和存贮器,但现在已发展到将各种模拟电路也一起集成在单片上。于是,作为模拟集成电路的基础器件—MOS集成运算放大器就突显其重要性。近年来,电路理论中的一个最活跃的分支-模拟集成滤波器,就是MOS集成运放的一个重要的应用领域。由于MOS器件与双极型器件在工作机制上的本质差异,因而在运放电路的设计原理上也必然有很大的不同。为了向广大读者介绍这方面的知识,本刊邀请周宁华同志以连载讲座方式对MOS集成运放的发展沿革、基本子线路原理、现代MOS集成运放电路以及频率补偿等问题作系统性的介绍,并就这类运放的一些主要问题阐述作者的看法。通过这个讲座,本刊希望能对研究和应用大规模线性集成电路的同志提供较系统的基础性知识,并增加对当前国外在这个领域中的动向的了解。本讲座所包括的内容有:MOS器件的基本特性、NMOS集成运放的基本子线路、新型NMOS集成运放、NMOS集成运放的频率补偿、CMOS集成运放等五个方面。
With the booming electronic science, integrated circuit technology is constantly making progress and breakthroughs at an alarming rate. An important symbol of progress is the large-scale and very large-scale integrated circuits are increasingly being used. An important development trend of the 1980s is the comprehensive and large-scale integration of various electronic systems. The traditional MOS mass-scale integration process used to be limited to microprocessors and memories, but has now evolved to integrate various analog circuits together on a single chip. Thus, as the basis for integrated circuits analog integrated circuits - MOS integrated operational amplifier to highlight its importance. In recent years, one of the most active branches of the circuit theory, analog integrated filter, is an important application area of MOS integrated operational amplifier. Due to the essential differences in working mechanism between MOS devices and bipolar devices, the design principle of the op amp circuit must be greatly different. In order to introduce this knowledge to readers, this magazine invited Comrade Zhou Ninghua to introduce the evolution of MOS integrated operational amplifier, basic sub-circuit principle, modern MOS integrated operational amplifier circuit and frequency compensation for a series of lectures. And explain the author’s views on some of the major issues of this type of op amp. Through this lecture, the journal hopes to provide comrades who research and apply large-scale linear integrated circuits with more systematic basic knowledge and increase their understanding of current foreign trends in this field. This lecture includes the following five aspects: basic characteristics of MOS devices, basic sub-circuits of NMOS integrated operational amplifier, new integrated NMOS operational amplifier, frequency compensation of NMOS integrated operational amplifier and CMOS integrated operational amplifier.