I am learning ADUCM360 now. I have two questions.
1/ In UG-367, page23, Table14--- when Gain32 is set, Absolute Input Voltage range is 0V to 22.18mV. Why is it not 31.25mV? How to calculate this?
when Gain32+ MOD2 is set, Absolute Input Voltage range is 0V to 15.625mV. Why is it not 31.25mV or 22.18mV? How to calculate this?
2/ If I want to get Gain4, How to config it? PGA=4 or PGA=2 plus MOD2. Which one is better? Or just PGA=4 can be set.
I appreciate your reply, Thanks for your help!