I measured ACD input increasing the voltage by 10mVdc. but, there are non-nonlinear points.
As the datasheet, ED and EL are +-1.5LSB and +_2LSB. It seems that my measurement result is bigger than them.
Could you please explain how to reduce the error?
Thank you in advance.
Vref : 3.3V
ADC clock : 72Mhz / 2 = 36Mhz
1 LSB : 3.3V / 4096 = 0.805664063
ADC channel : Fast channel ADC1 3channel
Sampling mode : Single-ended
Sampling time : ADC_SampleTime_7Cycles5