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设计一个电压比较器,技术指标要求尽管很多,诸如比较器的精度及灵敏度、输入电压范围、共模抑制比以及输入阻抗等,但主要考虑的还是它的精度和灵敏度.为此,除了注意选择比较元件(例如采用失调电压小,共模抑制能力强、输入阻抗高的集成运算放大器)、采用稳定的电源电压及其对线路元件的选用与老化处理外,尤为重要的是掌握调整方法,这一点常常容易被忽视.如果设计一个电压比较器,不知道该怎样调整
The design of a voltage comparator, although many technical requirements, such as the comparator accuracy and sensitivity, the input voltage range, common mode rejection ratio and input impedance, but the main consideration is its accuracy and sensitivity.To this end, in addition to pay attention to the choice Comparing components (eg integrated op amps with low offset voltage, high common-mode rejection, and high input impedance), using a regulated supply voltage and its selection and aging of line components, it is especially important to know how to adjust this It is often easy to overlook one point. If you design a voltage comparator, do not know how to adjust