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ADC12 differential pair & single ended mixed

Question asked by Matthias Uhlmann on Oct 27, 2016
Latest reply on Nov 14, 2016 by xiangjun.rong

Hi all,


I set up ADC12 to measure:

- ANA0 & ANA1 as differential pair

- ANA3 as single ended

- ANB0 & ANB1 as differential pair

- ANB3 as single ended

- ANB4 as single ended


i use A & B channel in triggered parallel mode and run them independent.



sample ANB3 & ANB4 deliver complete wrong result:

=> if ADC voltage increase, ADC result decrease


Is it possible that there is a Problem on ADC12?