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Pagedown
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How to use the instrumentation amplifier? Is it a voltage follower? Can it be used for isolation?
Pagedown said:So what about isolation amplifier? It can be used to break ground loops?
Pagedown said:I intend to use an op-amp for isolation instead of the isolation transformer. Thus, I haven't come across any in my country but have heard of it.
Is there any useful op-amp which can do isolation?
An instrumentation amplifier is an electronic device used to amplify small electrical signals in the presence of high levels of noise. It is commonly used in scientific instruments and data acquisition systems.
An instrumentation amplifier typically consists of three operational amplifiers and several resistors. It works by amplifying the difference between two input signals while rejecting any common-mode signals (signals that are present on both inputs). This results in a high gain and high common-mode rejection ratio (CMRR).
The main advantages of using an instrumentation amplifier include high accuracy, high gain, high CMRR, and low noise. It also provides a high input impedance, which means it does not load the signal source and can be used with a wide range of input signals.
Instrumentation amplifiers are commonly used in scientific equipment, such as medical devices, sensors, and data acquisition systems. They are also used in industrial applications, such as process control and automation, and in audio equipment.
When choosing an instrumentation amplifier, it is important to consider the required gain, bandwidth, input impedance, and CMRR. You should also consider the power supply requirements and the available packaging options. It is recommended to consult with a specialist or refer to the manufacturer's datasheet for guidance in selecting the right instrumentation amplifier for your specific application.