An
op-amp stands for
operational amplifier. The name comes from the fact that these devices were originally designed to perform mathematical operations (like addition, subtraction, integration, and differentiation) in analog computers.
- Operational refers to the fact that the amplifier was used in performing various mathematical operations, and
- Amplifier means itβs designed to amplify (increase the strength of) a signal.
So, an op-amp is essentially an amplifier designed to perform specific mathematical functions on signals. Even though modern op-amps are used in a wide range of applications, including filtering, buffering, and signal processing, the original name reflects its roots in analog computation.