Hi Felipe de Andrade, I tried recreating your code, see below. I am sending the exact settings you have that write to REG 0x03 to turn off all channels except ch0 I applied -0.5V to ch0, and you can see that the hex value I received corresponds to -0.5V assuming VREF = 1.2V and gain = 1 You can also see from the second image that the CRC calculation is correct Are you absolutely sure that the third word in your frame corresponds to ch0? -Bryan
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