ADS8665: ADS 8665 BIPOLAR INPUT (NEGATİVE INPUT?)

*Negative input will be generated by DC Power Supply but ADC is single ended input not differential.

I will provide negative voltage from a DC supply voltage. So, should I connect the + and - terminals each other and AIN_GND ? 

If you have a single 12V source, you would connect it like this:

For positive voltage, AIN_GND pin is connected to the ADC's GND. Should I connect the AIN_P pin, for negative voltage, to the ADC's GND as well?

Hi TCE IK,

Let's take a step back.  I mentioned initially for you to have a look at figure 7-2 on page 32.  Depicted there is an AC source where the +/-12V input varies positive and negative about 0V, which is where the AIN_GND and system ground is connected.  If you are trying to measure a DC power source, you cannot measure both positive and negative voltage at the same time.  You will need to keep 0V connected to AIN_GND (ADC/System ground) and switch AINP between the positive and negative outputs of the power supply.

while 0V is connected to AIN_GND, how can I provide negative voltage to AINP? This is not possible with a DC power supply.

here is my power supply. how can I connect to ADC GND reference pin and negative voltage output pin? 

Thank you very much!