1. Need to measure 8 channel 4-20mA. Ckt is 3.3V powered.
2. One option is to measure by adding a resistor of 165ohms (or 150ohm for error margin) & get 3.3V.
But problem is I have to ground all the resistor connection to that of ADC.I want to keep all of them isolated.
3. I have read abt receiver RCV420, but its minimum voltage requirement is higher.
4. Is there any way to do it isolated.
2. One option is to measure by adding a resistor of 165ohms (or 150ohm for error margin) & get 3.3V.
But problem is I have to ground all the resistor connection to that of ADC.I want to keep all of them isolated.
3. I have read abt receiver RCV420, but its minimum voltage requirement is higher.
4. Is there any way to do it isolated.