Measuring amplifiers

Measuring amplifier (instrumentation amplifier, electrometric Subtractor) - this type of differential amplifier with characteristics suitable for use in measuring and test equipment. Such characteristics include: a very small DC offset, low drift, low noise, very high gain with the feedback open, a very high common-mode rejection ratio, and very high input impedance. Such amplifiers are used when greater precision and high stability of the scheme, both short-term and long-term.