LM324 is a 14pin IC consisting of four independent operational amplifiers (op-amps) compensated in a single package. Op-amps are high gain electronic voltage amplifier with differential input and, usually, a single-ended output. The output voltage is many times higher than the voltage difference between input terminals of an op-amp.
These op-amps are operated by a single power supply LM324 and need for a dual supply is eliminated. They can be used as amplifiers, comparators, oscillators, rectifiers etc. The conventional op-amp applications can be more easily implemented with LM324.
|1||Output of 1st comparator||Output 1|
|2||Inverting input of 1st comparator||Input 1-|
|3||Non-inverting input of 1st comparator||Input 1+|
|4||Supply voltage; 5V (up to 32V)||Vcc|
|5||Non-inverting input of 2nd comparator||Input 2+|
|6||Inverting input of 2nd comparator||Input 2-|
|7||Output of 2nd comparator||Output 2|
|8||Output of 3rd comparator||Output 3|
|9||Inverting input of 3rd comparator||Input 3-|
|10||Non-inverting input of 3rd comparator||Input 3+|
|12||Non-inverting input of 4th comparator||Input 4+|
|13||Inverting input of 4th comparator||Input 4-|
|14||Output of 4th comparator||Output 4|