Chapter 411

Gain trimming in instrumentation amplifier-based systems

Jim Williams

Abstract

Gain trimming in instrumentation amplifier-based systems is discussed.

Keywords

Gain trimming

instrumentation amplifier

Gain trimming is almost always required in instrumentation amplifier-based systems. Gain uncertainties, most notable in transducers, necessitate such a trim.

Figure 411.1, a conceptual system, shows several points as candidates for the trim. In practice, only one of these must actually be used. The appropriate trim location varies with the individual application.

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Figure 411.1 Conceptual Transducer Signal Conditioning Path Showing ...

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