Definition and application of isolation amplifier

The isolation amplifier is a special measurement amplifier circuit that has no direct circuit coupling between the input, output and power supply circuits, that is, there is no common ground terminal for the signal during transmission. A device with ohmic isolation between the input circuit and the amplifier output. The isolation amplifier can be applied to small signal measurement in high common-mode voltage environments, isolating the tested object and the data acquisition system, thereby improving the common-mode rejection ratio, while protecting electronic equipment and personal safety.It is widely used in industrial control, signal measurement, medical equipment, signal amplification and other aspects. Used in telecommunications, electricity, petroleum, petrochemical, environmental protection, water treatment, metallurgy, food, HVAC and other fields.

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