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query on the ADC0

Question asked by nagendra murthy on Oct 28, 2016
Latest reply on Oct 31, 2016 by Kerry Zhou

Hello everyone, 


I'm working on the LPC1837 micro controller. i have a query regrading the ADC conversion of the ADC0 channel 0. 

ADC0 channel 0 has be connected to the port 4 and pin 3 of the micro controller. as per the data sheet , i have matched it. 


Question: I'm feeding the fixed voltage of 12.5 v to the  ADC 0 channel 0. but when i'm output value is varies from 0 to max and  again decrease from Max to 0. 

i'm facing the issue only in the channel. 

where as the output for the other channel are obtain are correct.