I am looking into AD7739 for +/- 2.5V inputs application. I figured it out that if +/-2.5V on all AIN pins, the AGND has to be at -2.5V and DGND has to be at -2.5V also (The absolute limits for the device between AGND and DGND is +/- 0.3V, AIN to AGND is -0.3V). This will make the SPI signals to be +/- 2.5V swings.
Am I understanding this correct?
Any comments or help are much appreciated.