Operational Amplifiers - Op Amps

Arrow.com is an authorized distributor of operational amplifiers from industry-leading manufacturers, including 3Peak, Analog Devices, Linear Technology, Microchip Technology, and many more. Find op amps from high performance to ultra low cost, plus low noise, wideband, zero drift, and nanopower. Sort by amplifier type, number of channels per chip, power dissipation, voltage, and current. An operational amplifier (op-amp) is a circuit component used for signal amplification. An op-amp takes a differential voltage present at its two input terminals, typically labeled V+ and V-, and multiplies the difference (V+ - V-) by a gain factor G; driving out an amplified signal as a single ended output voltage. They are widely used to boost or amplify input signals to a desired output voltage and are effective because of the large amount of gain, or amplification, they can produce. This enables them to be versatile in their implementation in various electronic circuit designs. Op-amps can take on a variety of different behaviors and characteristics primarily from the way they are configured with additional external components such as resistors, capacitors and inductors. An ideal op-amp has infinite open-loop gain, high input impedance and low output impedance. This enables maximum voltage gain, which can prove useful when trying to amplify a very small signal. However, utilizing resistors as negative feedback enables further control of the amount of gain it exhibits.The gain, input impedance, output impedance and bandwidth are all determined by the surrounding components. They can be used as discrete packaged components on printed circuit boards or as a sub-component in an integrated circuit together with other types of circuits. Multiple op-amps can be used in a cascaded fashion to increase the amount of gain.