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It has four inbuilt comparators it compares two input voltage levels and gives digital output to show the bigger one. The LM339 is a most commonly used comparator, designed for use in level detection, low−level sensing and memory applications in automotive and industrial electronic applications.
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Even if used as a comparator the 741 still detects weak signals so that they can be recognized more easily. The difference between the two is small but significant. However, the 741 is used as a comparator and not an amplifier. There are many common application circuits using IC741 op-amp, they are adder, comparator, subtractor, integrator, differentiator and voltage follower.īelow is some example of 741 IC based circuits.