ABSTRACT
An instrumentation amplifier is one that is used in electronic measuring instruments or in electronic systems in which the highest precision is required. A popular instrumentation amplifier is shown in Fig. 1. It can be built from three op amp integrated circuits but more often the three amplifiers are manufactured already connected on the same chip. As a ‘black box’ the instrumentation amplifier, or ‘in amp’, has the same input and output terminals as a single op amp, but its performance is superior.
