What is the main purpose of an instrumentation amplifier and what are three of its key characteristics?

The instrumentation amplifier is intended for precise, low-level signal amplification where high input resistance, low noise and accurate closed-loop gain is required. Also, low power consumption, high slew rate and high common-mode rejection ratio are desirable for good performance.

What is the need of instrumental amplifier?

The importance of an instrumentation amplifier is that it can reduce unwanted noise that is picked up by the circuit. The ability to reject noise or unwanted signals common to all IC pins is called the common-mode rejection ratio (CMRR). Instrumentation amplifiers are very useful due to their high CMRR.

Why instrumentation amplifier is used in ECG?

Instrumentation amplifiers (IA) are widely used in different measurement applications where it is necessary to suppress any unwanted common-mode signals. And for recording of the ECG signals, the IA should be compact, lightweight, and consume as little battery power as possible.

What is instrumentation amplifier briefly explain its working principle?

Instrumentation amplifier is a kind of differential amplifier with additional input buffer stages. The addition of input buffer stages makes it easy to match (impedance matching) the amplifier with the preceding stage. Instrumentation are commonly used in industrial test and measurement application.

How does an instrumentation amplifier work?

An Instrumentation Amplifier (In-Amp) is used for low-frequency signals (≪1 MHz) to provide a large amount of Gain. It amplifies the input signal rejecting Common-Mode Noise that is present in the input signal. Basically, a typical Instrumentation Amplifier configuration consists of three Op-amps and several resistors.

Which amplifier is used in ECG?

The standard circuit, if more than 60dB of common−mode rejection is required, is the 3 op−amp instrumentation amplifier shown in Figure 13 and this circuit is used in most ECG machines. R1 .

What is the application of instrumentation and control engineering?

Control and instrumentation (C&I) engineers are responsible for designing, developing, installing, managing and maintaining equipment which is used to monitor and control engineering systems, machinery and processes. Your job is to make sure that these systems and processes operate effectively, efficiently and safely.

What is instrumentation amplifier describe its properties?

Definition: A special type of amplifier that is used to amplify signals of extremely low-level is known as Instrumentation Amplifier. It is basically a differential amplifier, that performs amplification of difference of input signal. It has high CMMR, offers high input impedance and consumes less power.