Instrumentation amplifiers are a type of precision gain block, a differential amplifier (a type of electronic amplifier that amplifies the voltage difference between two inputs but suppresses any voltage common to the two inputs). Instrumentation Amplifiers are also known as in-amps.
Common applications are:
Test & Measurement Industrial Devices Data Acquisition Devices Medical Devices Any noisy environment where large common-mode signals are present
How do instrumentation amplifiers work?
An instrumentation amplifier measures small signals in a noisy environment. The noise generally is "common-mode noise" (the difference between the noise-free common mode voltage and the actual common mode voltage). An instrumentation amplifier uses its common-mode rejection to distinguish the noise from the signal of interest.
What are the instrumentation amplifiers used for?
Instrumentation amplifiers are needed in nearly every field of electronics, particularly in the test and measurement industry. They can be used as a voltage follower, selective inversion circuit, a current-to-voltage converter, active rectifier, integrator, a variety of filters, and a voltage comparator.
Unlike instrumentation amplifiers (In Amp), operational amplifiers (Op Amp) are high-gain voltage amplifying devices with a differential input.
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:
Easy to useRail-to-rail output swingInput voltage range extends
150 mV below ground (single supply)Low power, 550 μA maximum supply currentGain set with one external resistorGain range: 1 to 1000High accuracy dc performance0.10% gain accuracy (G = 1)0.35% gain accuracy (G ...
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:
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 ...