AD7607

Hi,

We are using AD7607 to design a data acquisition system. Unfortunately, all the output signals voltage have a -5VDC drift. (e.g. Input=0V, AD7606 output=-5V; Input=2.5V, AD7607 output=-2.5V; Input=5V, AD7607 output=0V, etc.)  Would you please help me to find the problems? Please find the schematic as attached. Thank you very much!

Regards,

Wentian

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