Is instrumentation amplifier nothing but a standard op-amp with a different configuration? I wonder if the inner complicated circuit of an instrumentation amplifier same with standard op-amp's. At one forum I read: "An instrumentation amplifier is nothing more than a standard op-Amp configured in a differential mode with isolation buffering to the inverting input and non-inverting input." Is that true? I mean is the only difference configuration or inner circuitry? Does that mean any op-amp can be used as an instrumentation amplifier.
But here at page 9 of pdf document it says: "In contrast, if a standard op amp amplifier circuit were used in this application, it would simply amplify both the signal voltage and any dc, noise, or other common-mode voltages. As a result, the signal would remain buried under the dc offset and noise" : here is the link: http://www.analog.com/static/imported-files/design_handbooks/5812756674312778737Complete_In_Amp.pdf
Im asking about the IC part of the amplifier if it is manufactured the same way.