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ADuCM360: error between ADC0 and ADC1.

Question asked by JiaIR on Mar 25, 2013
Latest reply on Mar 27, 2013 by MMA

Hi,

 

When I sample the same signal source using ADC0 and ADC1 at same time with the same settings (using different channels and connect to the same signal source), it always has discrepancy.

For instance, there has about 66uV discrepancy between two when sample rate = 3.9Hz, Gain = 2 and input = 0.59v DC nominal with chop on.

The internal offset and scale calibration would not improve this.

 

Is this normal?

 

Is it possible to improve this?

 

Many thanks!

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