Other Parts Discussed in Thread: OPA333, INA226
As per this design Guidelines
* It says input of max of 400V (Is that referring to DC /AC)?
* I did not understand use of Rz with Zener Diode since Zener Diode will have Dynamic resistance internally.
* As I can see from the design Opamp is supplied with 5.1V using Zener Diode. If in case of input > 100V Wont it damage the Zener and also Opamp?
Can I do this :
AC Voltage to the ADC pin by dividing the AC Voltage to max voltage level of ADC pin of the controller followed by Diode to the ADC pin?
Any suggested guidelines for AC Voltage measurement?
Thanks.