Amplifier: An amplifier is an electronic device that increases the amplitude of an input signal to produce a larger output signal.
Gain Bandwidth Product: The gain bandwidth product represents the product of voltage gain and bandwidth, indicating the frequency range over which an amplifier can provide a specified level of gain.
Operational Amplifier (Op-Amp): An operational amplifier is a high-gain electronic device used in various applications, such as amplification, filtering, and mathematical operations.