The LM324N is a quad operational amplifier in 14 pin DIP package. It consists of four independent internally frequency compensated high gain operational amplifiers which are designed specifically to operate from single power supply over wide voltage range. Operation from split power supplies is also possible so long as difference between two supplies is 3V to 32V. Typical application includes transducer amplifier, DC gain blocks and all the conventional op amp circuits which now can be easily implemented in single power supply systems.