The LM324 is a quad operational amplifier with four independent op-amps in a 14-pin DIP. Operates from a single 3V to 32V supply or dual supplies. Popular for comparator and signal conditioning applications.
| Pin | Name | Function | Type |
|---|---|---|---|
| 1 | OUT1 | Amp 1 output | I/O |
| 2 | IN1- | Amp 1 inverting input | ADC |
| 3 | IN1+ | Amp 1 non-inverting input | ADC |
| 4 | VCC | Positive supply | PWR |
| 5 | IN2+ | Amp 2 non-inverting input | ADC |
| 6 | IN2- | Amp 2 inverting input | ADC |
| 7 | OUT2 | Amp 2 output | I/O |
| 8 | OUT3 | Amp 3 output | I/O |
| 9 | IN3- | Amp 3 inverting input | ADC |
| 10 | IN3+ | Amp 3 non-inverting input | ADC |
| 11 | GND | Ground | GND |
| 12 | IN4+ | Amp 4 non-inverting input | ADC |
| 13 | IN4- | Amp 4 inverting input | ADC |
| 14 | OUT4 | Amp 4 output | I/O |