SBAS949A February 2020 – February 2021 ADS131M06
A current sensor connects to the current channels and a simple voltage divider is used for the corresponding voltage measurement. The CT has an associated burden resistor that must be connected at all times to protect the measuring device. The selection of the CT and the burden resistor is made based on the manufacturer and current range required for energy measurements. The voltage divider resistors for the voltage channel are selected to ensure the mains voltage is divided down to adhere to the normal input voltage ranges of the ADS131M06.
In this design, the ADS131M06 interacts with a microcontroller (MCU) in the following manner: