Op Amps, short for Operational Amplifiers, are semiconductor devices commonly used in analogue electronic circuits. They work by receiving an input signal and amplifying it into a stronger output signal. Op Amps offer a very high voltage gain amplifiers.
How do Op Amps work? Op Amps provide mathematical operations such as addition, multiplication, differentiation, and integration. They are voltage amplifiers which usually have a differential input and a single-ended output. There are two inputs into an Operational Amplifier which are called inverting (-) and non-inverting (+) inputs. If you were to increase the voltage to the inverting input, the output voltage decreases. Alternatively, if you increase the voltage to the non-inverting input, the output voltage increases. If an equal voltage is supplied to both inputs, the output will not change.
What is a differential amplifier? Op Amps are often referred to as differential amplifiers. This is because the output of an Op-Amp is relative to the difference between the input voltages.
Where are Op Amps used? Operational amplifiers have a wide variety of uses in electronic circuits. Here are some examples of how they are used:
Crystal oscillators and waveform generators Audio- and video-frequency pre-amplifiers and buffers Integrators Comparators Analogue-to-digital (ADC) and digital-to-analogue (DAC) converters Voltage Clamps Analogue Calculators Filters Differentiators Precision rectifiers Linear voltage regulators Current regulators Precision rectifiers Precision peak to peak detectors
Description:
Differential Amplifiers are operational amplifiers configured to amplify
differential input signals but to supress or reject common-mode signals; they incorporate on-chip resistors to define the differential gain.
Description:
Differential Amplifiers are operational amplifiers configured to amplify
differential input signals but to supress or reject common-mode signals; they incorporate on-chip resistors to define the differential gain.
Description:
The Instrumentation Amplifier ICs amplify the difference between
two input signal voltages, while rejecting any signals that are common to both inputs. The DC precision and gain accuracy is maintained within a noisy environment, and also where large common-mode signals ...
Description:
Precision operational amplifiers from Texas Instruments Burr Brown
OPA series are suitable for demanding applications requiring high accuracy and low parametric drift with time and temperature. Typical applications include transducer and strain gauge amplifiers, precision integrators, active filters and high ...