we use AD7622 ADC for our project. This chip has a difereintial input but we need unipolar. In the datasheet I found a circuit for conversion of unipolar signal to diferential, which is required for the ADC:
We see that here a precision of the resistors is critical, but in the datasheet we did not found any information about that. And we know that even the 1% precision resistors carries a big error.
How we could convert a Single-Ended input to differential without losing a precision?
Thanks in advance.