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模拟集成电路(本文主要讨论单片电路)是指用于处理模拟量的电路。由于自然界和生产过程的各种现象大多数都以模拟量的形式表现出来,例如,温度、压力、流量、位移、浓度、电流、电压、频率等,从宏观来看它们都表现为连续变化的模拟量,因而需要大量各种形式的模拟电路,来完成对这些量的检测、处理,以实现对自然界和生产过程的控制。和数字量相比,模拟集成电路的特征是参数多、范围广、条件复杂,因而对模拟集成电路提出了较为苛刻的要求。例如电压可高达数百乃至上千伏,低到几微伏,电流从微微安到安
Analog integrated circuits (this article discusses the monolithic circuit) is used to deal with analog circuits. Since most of the phenomena in nature and in the production process are shown in analog form, such as temperature, pressure, flow, displacement, concentration, current, voltage, frequency, etc., they all behave as a continuous change Analog, which requires a large number of various forms of analog circuits to complete the detection of these quantities, in order to achieve the control of nature and the production process. Compared with the digital quantity, the characteristic of the simulation integrated circuit is that the parameter is numerous, the range is wide, the condition is complicated, thus put forward the more rigorous requirement to the simulation integrated circuit. For example, the voltage can be as high as hundreds or even thousands of volts, as low as a few microvolts, the current from the Pico Ann security