SBAS894A April 2018 – October 2018 ADS112C04
When the POWERDOWN command is issued, the device enters power-down mode after completing the current conversion. In this mode, all analog circuitry (including the voltage reference and both IDACs) are powered down and the device typically only uses 400 nA of current. When in power-down mode, the device holds the configuration register settings and responds to commands, but does not perform any data conversions.
Issuing a START/SYNC command wakes up the device and either starts a single conversion or starts continuous conversion mode, depending on the conversion mode selected by the CM bit.