AD7294Not Recommended for New Designs
The AD7294 contains all the functions required for general-purpose monitoring and control of current, voltage, and temperature integrated into a single...
Datasheet AD7294 on Analog.com
If FFF is written to the hysteresis register for a particular channel, the DATAHIGH and DATALOW registers act as storage registers for the maximum and minimum conversion results. This function is useful when an alert signal is not required in an application but one still wants to monitor the minimum and maximum conversion values over a period of time.
