Instrumentation Amplifier Pin Diagram. The op amp 3 is a difference amplifier that forms the output stage of the instrumentation amplifier. An instrumentation or instrumentational amplifier sometimes shorthanded as in amp or inamp is a type of differential amplifier that has been outfitted with input buffer amplifiers which eliminate the need for input impedance matching and thus make the amplifier particularly suitable for use in measurement and test equipment additional characteristics include very low dc offset low drift.

I have used two lm358 ics. The circuit diagram of a typical instrumentation amplifier using opamp is shown below. Instrumentation are commonly used in industrial test and measurement application.

The circuit diagram of a typical instrumentation amplifier using opamp is shown below.

When the pins are not connected then amplifier gain will be one but with different resistors various values of gains can be obtained. I have used two lm358 ics. Instrumentation amplifier using op amp lm358 now let s build a practical instrumentation amplifier using op amp and check how it is working. The circuit diagram of a typical instrumentation amplifier using opamp is shown below.