What kind of device is an integrated circuit operational amplifier?

An operational amplifier, or op-amp, is a fundamental building block in analog electronics. It is designed to take a continuous range of input voltages and produce a proportionally scaled output voltage. This continuous variation makes it strictly an analog device. Although op-amps are almost always packaged as integrated circuits (ICs) today, they do not process discrete binary states (1s and 0s) like digital logic gates or microprocessors do. They are used for tasks like amplifying audio signals, filtering RF, and analog mathematical operations.