Instead of using voltage transformer to monitor three phase voltage i am planning to use ADuM4190 isolation amplifier. I am not able to find application not for ADuM4190. please suggest

I want to eliminate one voltage transformer in my design. which measures phase voltage. I saw datasheet of ADuM4190, which clearly tells application as voltage monitoring & also it provides complete isolation between input side & output side. I am looking for extended application note for the same. Please suggest

  • Hi:

    The ADuM4190 was designed for use as isolated feedback in an isolated dc to dc converter, and will have very high gain in this application to maintain the output voltage to 1% accuracy without errors from output gain, offset and linearity. But in a voltage monitoring application the ADuM4190 will have a small fixed gain and therefore will have gain errors of 17%, offset errors of 0.4V and linearity of 1%. We don't have an app note for voltage monitoring since the error is high, and it will depend on the application requirements whether it will fit your application.

    Regards, Brian

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