AD5292 +/-5V supply operation?

Yes, this workaround may work..Care needs to be taken such that all signals are now referenced to GND of -5V and VSS of -5V.

Even the A, W, B terminals are referrenced to VSS of -5V and the max voltages should not exceed VDD in any case along with the maximum currents flowing through these terminals.

Thank you very much for your quick reply. I have realised that I need to change to a +-/2.5V type anyhow, because I am planning to operate the potentiometer at rather low values (<1k) due to my specific INAMP gain requirements. Measurements at +/5V have shown that the performance is rather poor, and the datasheet suggests high minimum values for achieving 3% -but only if I have a rather large  VDD-VSS was available. So I am planning to choose the AD5174, which is operated at +/-2.5V and which has its own end-to-end tolerance stored in memory. There were no figures on tolerance deviations for lower/higher codes in the datasheet.  Would you be able to provide me with an approximate figure for the calibrated tolerance for codes in the order of, say, 0x32? I am sure that they cannot be 0% (after reading the tolerance value) throughout the entire range, right? 

Thank you very much for your quick reply. I have realised that I need to change to a +-/2.5V type anyhow, because I am planning to operate the potentiometer at rather low values (<1k) due to my specific INAMP gain requirements. Measurements at +/5V have shown that the performance is rather poor, and the datasheet suggests high minimum values for achieving 3% -but only if I have a rather large  VDD-VSS was available. So I am planning to choose the AD5174, which is operated at +/-2.5V and which has its own end-to-end tolerance stored in memory. There were no figures on tolerance deviations for lower/higher codes in the datasheet.  Would you be able to provide me with an approximate figure for the calibrated tolerance for codes in the order of, say, 0x32? I am sure that they cannot be 0% (after reading the tolerance value) throughout the entire range, right? 

Only the midscale and zero scale position tolerances are stored at the end of the TP memory. Tolerances of no other positions are stored.

TP memory feature is provided for you to store the wiper position location and read at a later point of time. It does not store the tolerance but the wiper position or the actual Raw resistor that you are seeking.

Thank you for clarifying, this is clear now.