AM4377: ADC error increasing with V more than expected : your comment / suggestions

Part Number:AM4377

Hi everybody ,

I m using the ADC1 and ADC0 component of the AM4377. , (  I can share you offline  all measurements /data/ circuit etc ) .

(Please visit the site to view this file)in our measurements, I  assume the Bias Supply is disable and both bypasses are closed.

some more details :

For AIN we are using AIN2 resistor divider of 9.09k and 4.7k 

FOR AIN3 resistor divider of 750 ohm and 909 ohm

So we do use low resistance compare to the 18k inside 

In attached  table describe the measurements are between ADC1_AIN2 and ADC1_AIN3 but we've seen the issue between other pairs also  :  I have an error  which is increasing with voltage increase  :  could  you comment ? is it wrong  ? 

any suggestion ?

best regards

Carlo