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  1. Dear @JColvin, I am using PMOD AD5 to measure the voltage of current and voltage transformer. I set the output voltage of current and voltage transformer to maximum 3.3V. I would like set the external reference voltage of AD5 to 3.3V, So, how would I set AD5 reference voltage to 3.3V? Also, please explain the difference between Analog supply voltage (AVdd) and REFIN2+ and REFIN2-, Which pin will be use as external reference voltage pin? Furthermore, I am using AD7193.h library created by Anne Mahaffey and he define variable named mVref = 2.5, I think it represent a default reference voltage. Suppose if change the AD5 reference voltage to 3.3V. Do I have to change this number to 3.3V in AD7193.h file? Lastly, Is the mentioned/attached library is suitable for 24-bit ADC? Many thanks