Hi DD,
Thanks for your explanation. I need some more explanation.
In the datasheets, they have given as need to separate the analog and digital Ground. If the OP amp side is analog side, then which is the Digital GND?
Is it the 5V powersupply GND? Now I have used a common Ground. Is there any problem?
The Bipolor +/-5V comes from a opamp output (the positive input is Grounded and the feedback resistor connected between the negative input & output). So Do I need to choose a opamp with power supply V+ 5V and V- -5V? So I cannot use OPA350, am I correct? Which opamp can you recommend? Thank you.
Regards,
Hamdan