The LM324 series consists of four independent,
high-gain, internally frequency-compensated operational amplifiers
designed specifically to operate from a single power supply over a
wide range of voltages.

LM324AD

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 crossover frequency and the input bias current are
temperature-compensated.

The LM324 is available in 3 packages: DIP 14, SO14 and TSSOP14.