The IC LM224 is a quad operational amplifier similar to the LM324, but designed for a wider supply voltage range and higher performance. It includes four independent, high-gain, internally frequency-compensated op-amps, capable of operating on dual or single power supplies. The LM224 is used in various analog signal processing tasks, including amplification, filtering, and signal conditioning, and is well-suited for applications requiring higher precision and flexibility in signal processing.