The LM324 series are low-cost, quad operational amplifiers with true differential inputs.
They can operate at supply voltages as low as 3.0 V or as high as 32 V with quiescent currents about one-fifth of those associated with the MC1741.
The common mode input range includes the negative supply, eliminating the need for external biasing components in many applications.
The output voltage range also includes the negative power supply voltage.
The amplifiers are internally compensated and have industry standard pinouts.
They are available in Pb-Free packages and are qualified for automotive use.
The circuit consists of four internally compensated, two-stage operational amplifiers with a first stage that performs the first stage gain function, level shifting, and transconductance reduction functions.
The second stage consists of a standard current source load amplifier stage.
The amplifiers are biased from an internal voltage regulator with low temperature coefficient, giving them good temperature characteristics and excellent power supply rejection.