Hi Team,
My customer wants to minimize Ifs by controlling external DAC like indicated in "Controlling RREF With an MCU DAC" capture of datasheet.
According to the datasheet, VRREF is estimated around 1.18 ~ 1.28V, so To set the Ifs to a minimum value, the DAC output must be set to 1.28V. But DAC output voltage > VRREF condition is not recommended in the datasheet also.
Then, they have following two questions.
1. what are the specific risks of (DAC output voltage > VRREF) condition?
2. Does the DAC output need to be up to 1.18 V?
Regards,
Takashi Onawa