The maximum power dissipation of the LM324KAPWRG4 is 670mW, which is calculated based on the maximum junction temperature (TJ) of 150°C and the thermal resistance (RθJA) of 125°C/W.
Yes, the LM324KAPWRG4 can be used in a single-supply configuration. However, the input common-mode voltage range is limited to within 2V of the positive supply rail, and the output voltage swing is reduced when operating from a single supply.
To minimize noise and oscillations, it's recommended to follow good PCB layout practices, such as keeping the input and output traces short and separate, using a solid ground plane, and decoupling the power supply pins with capacitors.
While the LM324KAPWRG4 can be used as a comparator, it's not the most suitable op-amp for this application. The LM324KAPWRG4 has a relatively slow slew rate and limited output current, which can lead to slower response times and reduced accuracy. A dedicated comparator IC, such as the LM339, is generally a better choice.
The equivalent input noise voltage of the LM324KAPWRG4 is approximately 13nV/√Hz at 1kHz, which is relatively low and suitable for most audio and instrumentation applications.