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What is the maximum common mode voltage that can be applied to the input of AD7403? Can AD7403 be used to measure current on the high side of the motor phase?

Question asked by umreshpatel on May 9, 2018
Latest reply on May 14, 2018 by umreshpatel

How can i use the AD7403 to measure current on the high side of the motor phase.?

I have used  current sense resistor in series with motor phase windings. My DC Link voltage is 170V.

And I have connected the two ends of the current sense resistor to the input pins of AD7403 (vin+ and vin-).

The IC is getting damaged when I am switching on the DC link voltage. I have used isolated power supply for the analog side of the IC(VDD1) ?

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