An operational amplifier (often op amp or opamp) is a DC-coupled electronic voltage amplifier with a differential input, a (usually) single-ended output...

This article illustrates some typical operational amplifier applications. Operational amplifiers are optimised for use with negative feedback, and this...

The operational transconductance amplifier (OTA) is an amplifier that outputs a current proportional to its input voltage. Thus, it is a voltage controlled...

The current-feedback operational amplifier (CFOA or CFA) is a type of electronic amplifier whose inverting input is sensitive to current, rather than...

transimpedance amplifier (TIA) is a current to voltage converter, almost exclusively implemented with one or more operational amplifiers. The TIA can be...

An amplifier, electronic amplifier or (informally) amp is an electronic device that can increase the magnitude of a signal (a time-varying voltage or...

A differential amplifier is a type of electronic amplifier that amplifies the difference between two input voltages but suppresses any voltage common...

schematically identical to a standard operational amplifier (op-amp), the electronic instrumentation amplifier is almost always internally composed of...

due to temperature change. In analog computing, feedback around operational amplifiers is used to generate mathematical functions such as addition, subtraction...

amplifier Transimpedance amplifier Fontana bridge Operational transconductance amplifier MOSFET Blencowe, Merlin (2009). "Designing Tube Amplifiers for...

A valve amplifier or tube amplifier is a type of electronic amplifier that uses vacuum tubes to increase the amplitude or power of a signal. Low to medium...

The operational amplifier integrator is an electronic integration circuit. Based on the operational amplifier (op-amp), it performs the mathematical operation...

discrete devices, e.g. VCR2N. Another type of circuit uses operational transconductance amplifiers. In audio applications logarithmic gain control is used...

more efficient board layout. Operational amplifier (op-amps) swapping is the process of replacing an operational amplifier in audio equipment with a different...

In electronics, a pinout (sometimes written "pin-out") is a cross-reference between the contacts, or pins, of an electrical connector or electronic component...

A direct-coupled amplifier or DC amplifier is a type of amplifier in which the output of one stage of the amplifier is coupled to the input of the next...

the gain at which the bandwidth is measured. For devices such as operational amplifiers that are designed to have a simple one-pole frequency response,...

supply variations to its output signal. In the specifications of operational amplifiers, the PSRR is defined as the ratio of the change in supply voltage...

ways. An active circuit, using a device such as a transistor or operational amplifier A passive circuit, using autotransformers. These are typically used...

one operational amplifier. To sample the input signal, the switch connects the capacitor to the output of a buffer amplifier. The buffer amplifier charges...

electronic amplifiers is exceedingly high (by design) – an ideal operational amplifier (op-amp) has infinite open-loop gain. Typically an op-amp may have...

the amplifier has a gain of one or more, ensuring stability. Dominant-pole compensation can be implemented for general purpose operational amplifiers by...

compares two input voltages. Comparators are closely related to operational amplifiers, but a comparator is designed to operate with positive feedback...

electric current as input instead of voltage. Log amplifier circuits designed with operational amplifiers (opamps) use the exponential current–voltage relationship...

A negative-feedback amplifier (or feedback amplifier) is an electronic amplifier that subtracts a fraction of its output from its input, so that negative...

capacitor. The charge amplifier was invented by Walter Kistler in 1950. Charge amplifiers are usually constructed using an operational amplifier or other high...

Multiple electronic amplifiers can be connected such that they drive a single floating load (bridge) or a single common load (parallel), to increase the...

between the inputs of an amplifier, especially an operational amplifier (op-amp), to make the output zero (for voltage amplifiers, 0 volts with respect to...

reasonable approximation to an amplifier with unity voltage gain. Modern analog filter implementations may use operational amplifiers (also called op amps). Because...

A fully differential amplifier (FDA) is a DC-coupled high-gain electronic voltage amplifier with differential inputs and differential outputs. In its ordinary...