Reference Gain Correction for the AD4134

Question

Hello. 
 I have a question regarding reference gain correction using the REFIN_GAIN_CORR_EN bit on the AD4134. 
 Is there a calculation formula for the reference gain correction? 
 Also, is there any information available regarding the accuracy of the correction? 
 Best regards.

JEstayo · Answer

Hi miky , 
 Apologies for the delayed response. The correction is done by multiplying the output code by the stored constant computed below. This is computed using known input conditions and stored to the device. 
 Expected/Actual 
 Expected - digital output computed where the reference is the measured voltage on REFIN pin. 
 Actual - ADC output 
 This compensates for the voltage drop on the 20 ohm resistor. 
 
 Thanks, Janine

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Reference Gain Correction for the AD4134