Friday 14 April 2017

adc - How can I do A/D conversion with isolation?


I have to sense a voltage range of 0-25V dc and send to the ATMEGA 32 microcontroller. I want to use a voltage divider for sensing the voltage. But the problem is isolation is required between the microcontroller and the sensing side. For isolation I cant use optocoupler since the output of the optocoupler is not proportional to the input sensing side, other than using sensors any other ideas for isolation?




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