Part Number: PGA900EVM
Tool/software: Code Composer Studio
Hi
I notes that PGA900 firmware guide said 24 bit ADC compensation algorithm is not supported.
So I have to use 16bit ADC. Then I find that DAC output of negative signal is much bigger than positive signal.
For example, 3mv positive signal(1.25V common mode voltage) have 1.5V output, but 3mv negative signal (-1.25V common mode voltage) have 4.2V DAC output.
Is the compensation algorithm can't support measure negative signal?