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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