We are a bit under pressure to solve this problem, would be nice someone could help fast.
Wenn we measure with ADC the signals makes a jump than it reaches a certain level.
First picture shows ADC result values (increments). The second is a measurement of the analoge input signal at the same time at the input of the operational amplifier (signal "SENSOR_1"). There is no jump to observe.
Signal "ADC1_CH00_SENSOR1" (=µC input) is not only defined by the voltage divider in the schematics. It seems that there is an additional e.g. 100 k pull down in the µC. And then it reaches a certain level, this internal resistor seems to be switched of. The signals jumps to its expected value.
We think that this is a configuration error but we can't figure out. There is no option "No internal resistor". 1 pull down, a few pull up and "No Init". "No init" does not sound as a valid option and may cause in random results. (though I will test this next).
I'm using MCUXpresso IDE v11.0.0 [Build 2516] [2019-06-05]
Can you help me with that?