9/17/2023 0 Comments Voltage comparator lm339 proteus![]() Therefore you could say that the comparator is the modified version of the Op-Amps which specially designed to give the digital output. ![]() When you look closely to the comparator symbol, some of you will recognize it as the Op-Amp (Operational Amplifier) symbol, so what make this comparator differ from its big brother Op-Amps is designed to accept the analog signal and outputting the analog signal while the comparator only outputting the digital signal although the ordinary Op-Amp could be used as the comparator such as the popular National Semiconductor LM324 quad Op-Amps, but the real comparator is designed to have a faster switching time comparing to the multipurpose Op-Amps. Today the modern comparator is easily found in the form of integrated circuit such as the popular National Semiconductor LM339 quad (four) comparator 14 pins dual in line (DIL) package bellow: This is when the comparator circuit becomes handy as it’s designed specially for this purpose. Some example of this situation is to send the interrupt signal to the microcontroller operation when the temperature is already exceeds certain limit or the light intensity exceeds certain bright level. Sometimes in the embedded system world we need to process the analog world and sending the signal to the microcontroller when the analog signal exceed some predetermine limit we’ve set.
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