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ADuCM360 ADC0 Counts Decresses Gradually

Question asked by on Feb 6, 2015
Latest reply on Feb 6, 2015 by MMA

Dear Associates,


We want best accuracy & steady results of ADC.


We are executing ADC sample code with below settings as inetrnal reference & ADC filter for 3.75Hz update rate, but observed ADC counts has 16 bit accuracy only & remaining 8 bit continuously decressing. 


void ADC0INIT(void)



// Enable ADC ready interrupt source


// ADC filter set for 3.75Hz update rate with chop on enabled


// Internal reference selected, Gain of 1, Signed integer output


// Turn off input buffers to ADC and external reference


// Select AIN0 as postive input and AIN1 as negative input


Below is the Circuit diagram of our Customized Board.


Please let me know if there is any problem in Hw or in Sw?