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How to Monitor Sensor Health with Instrumentation Amplifiers

Authored on: Feb 19, 2016

Technical Paper

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By their very nature, in amps are a good choice to condition small signals in the presence of large common-mode voltages and DC potentials. The three op amp instrumentation amplifier architecture performs this function with the input stage providing a high input impedance while the output stage filters out the common mode voltage and delivers the differential voltage. This white paper discusses the basics of a three op amp instrumentation amplifier, examines the advantages of zero-drift amplifiers and programmable gain amplifiers, and reviews application examples for a sensor health monitor and an active shield guard drive.
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