The issue I'm having is that have a AD5290 that needs to be able to have voltages on the A/W/B terminals that go between +-12V. Therefore I currently have Vss connected to the negative 12V rail of my power supply and Vdd is connected to the positive 12V rail. I'm using an Arduino Mega 2560 to send SPI commands and if I want to power the Arduino via the positive 12V rail I can't ground it without causing issues. If I ground it to the common ground of my power supply then whenever I connect the Arduino ground to the digital ground on the AD5290 I short the negative rail of my power supply, any suggestions on a work around?