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

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

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

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

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

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

{\displaystyle A} is the gain of the amplifier. Single amplifiers are usually implemented by either adding the appropriate feedback resistors to a standard op-amp...

Instrumentation amplifiers can also be designed using "indirect current-feedback architecture", which extend the operating range of these amplifiers to the negative...

advantage of negative feedback is that it extends the bandwidth of the amplifier. The concept of feedback is used in operational amplifiers to precisely define...

configuration with a light-dependent resistor (LDR) in the feedback loop. The gain of the amplifier then depends on the light falling on the LDR, which can...

relating to operational amplifiers. For an analysis of desensitization in the system pictured, see S.K Bhattacharya (2011). "§5.3.1 Effect of feedback on parameter...

current difference input and differential current output Current-feedback operational amplifier, single-ended current input and voltage output. Terrell, p...

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

broadcasting Crossed-field amplifier, a specialized vacuum tube used as a microwave amplifier Current-feedback operational amplifier Component failure analysis...

input current, or the total charge injected. The amplifier offsets the input current using a feedback reference capacitor, and produces an output voltage...

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

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...

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

stages of high-speed current-feedback operational amplifiers. The circuit is also the essential building block of bipolar current conveyors, and has seen...

computer Current-feedback operational amplifier Instrumentation amplifier Operational amplifier applications Operational transconductance amplifier Nancy...

frequency compensation is a technique used in amplifiers, and especially in amplifiers employing negative feedback. It usually has two primary goals: To avoid...

by applying parallel negative feedback might be considered to improve the source. Operational amplifiers with feedback effectively work to minimise the...

linear oscillator is an electronic amplifier such as a transistor or operational amplifier connected in a feedback loop with its output fed back into...

Comparators are closely related to operational amplifiers, but a comparator is designed to operate with positive feedback and with its output saturated at...

inverting current amplifier that reverses the current direction as well, or it could consist of a current-controlled current source (CCCS). The current mirror...

sound associated with a vacuum tube amplifier (valve amplifier in British English), a vacuum tube-based audio amplifier. At first, the concept of tube sound...

bandwidth of the amplifier (the bandwidth within which the amplifier gain is at least 1). For an amplifier in which negative feedback reduces the gain...

operational amplifier (op amp) for audio applications introduced by Signetics in 1979. The 5532 and the contemporary TL072 were the first operational...

help in designing and understanding various commonplace circuits (feedback amplifiers, resistive and time-dependent converters, negative impedance converters...

negative terminal of the power amplifier KC. This feedback causes the voltage amplifier to act like a voltage controlled current source. Since the motor torque...