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 a differential input and, usually, a single-ended output. The output voltage is many times higher than the voltage difference between the 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.
Unique Characteristics
In the linear mode, the input common-mode voltage range includes ground and the output voltage can also swing to ground, even though operated from only a single power supply voltage.
The unity gain cross frequency is temperature compensated.
The input bias current is also temperature compensated Advantages.
Eliminates the need for dual supplies.
Four internally compensated op amps in a single package.
Allows directly sensing near GND and VOUT also goes to GND.
Compatible with all forms of logic.
Power drain suitable for battery operation.Features:
Internally frequency compensated for unity gain
Large DC voltage gain 100 dB
Wide bandwidth (unity gain) 1 MHz (temperature compensated)
Wide power supply range:
Single supply 3V to 32V
dual supplies ±1.5V to ±16V
Very low supply current drain (700 µA) —essentially independent of supply voltage
Low input biasing current 45 nA (temperature compensated)
