Article AD5203: Negative voltage at the output

Question

Is it possible to connect a negative voltage to any of the potentiometers
outputs (A,B,AGND) in order to achieve a negative voltage at the wiper (W)? I
need a voltage range from -5V to 0V. If it is possible, which output(s) have to
be connected to -5V?

Answer

No it is not possible to have a negative voltage at the wiper output because
the AD5203 is a single supply device (2.7 - 5.5V) and the potentiometers
terminal voltages must be within the supply voltage range. Supply signals
present on terminals A, B, and W that exceed VDD or GND will be clamped by the
internal forward biased diodes. A better option, if outputs have to be
connected to -5v would be to use one of the dual supply devices such as the
AD5263.

Before You Switch


Switching languages will make ADI Explorer unavailable. Resume your session by switching back to English and reopening ADI Explorer.