LM2903D SO8 Dual Analog Differential Comparator

[title] - Electronic comparators are devices that compare two analog signals and generate a digital output that indicates which signal is greater. They are versatile electronic components that can be used in a variety of applications, including Switch control, Event Detection, Signal filter.

It usually consists of two inputs and one output. The inputs are used to connect analog signals to be compared. The output indicates which signal is greater. When the voltage on the positive input of the comparator is greater than the voltage on the negative input, the comparator output is high. When the voltage on the negative input of the comparator is greater than the voltage on the positive input, the comparator output is low.

There are two main types of electronic comparators: Threshold comparators (with a specific threshold voltage. When the voltage at one of the comparator inputs exceeds the threshold voltage, the comparator output changes state), Window comparators (They have two threshold voltages. When the voltage at one of the comparator inputs is between the two threshold voltages, the comparator output is high. When the voltage at one of the comparator inputs is outside the two threshold voltages, the comparator output is low.)