Analog Devices CN0218

An evaluation board for Current Monitoring with only 0.2% error in the presence of a 500V Common-Mode-Voltage, utilising the Analog Devices AD8212 Current Shunt Monitor IC. This circuit is one of the Analog Devices Circuits from the Lab™ series of reference circuits.

AD8212 High Common-mode-voltage Current Shunt Monitor IC
ADuM5402 Quad-Channel Isolator with Integrated DC-to-DC Converter
AD7171 16-Bit Low Power Sigma-Delta ADC
AD8605 Precision CMOS Rail-to-Rail Input/Output Op-Amp
ADR381 2.5V High Accuracy Band Gap Voltage Reference

An external shunt resistor with maximum voltage drop of 500 mV at maximum load current is required.

Current Sensing Amplifiers have a voltage output that is proportional to the volt drop across a very low value resistor, usually in a high-current power rail. Hence they measure the current flowing in that power rail.