could you explain what suffix /B means in the part number?
The accuracy spec in the datasheet for AD2S80ATD (T grade) is 4 arc minute
typical at 25degC. AD2S80ATD/B is a special grade of AD2S80ATD that meets the 4
arc minute accuracy spec over the full temperature range of
-55degC to +125degC and 12V +/-10% supply variation.