【摘要】 差分式放大电路作为直接耦合多级放大电路的输入级,主要是将两个输入信号的差值进行放大,抑制共模信号,是模拟电路很重要的组成单元电路。文章主要以双端输入双端输出的连接方式为例对差分式放大电路的动态分析方法进行探讨,对其他连接方式的差分式放大电路的动态分析同样适用。更多还原

【Abstract】 As the input of the direct-coupled multistage amplifiers,the differential amplifier will amplify the difference between two input signals and suppress common-mode signal,which is a critical unit component in the analog circuit.This paper takes the double-input and double-output connection as an example to discuss the dynamic analysis method of the differential amplifier,which is also applicable to other kinds of connections.The analysis method in this paper is straightforward;the paper has specific reference values for both teachers’ teaching and students’ learning.更多还原