I applied a bipolar test voltage (Fig. 'test_voltage.jpg' in attachment) at pin 1 of the ADC of the 56F8367 evaluation module. I configured the ADC to work in differential mode. Pin 0 was tied to the analog ground. The result of the ADC conversion (Fig. 'adc_result.jpg') reveals only one polarity of the voltage. How come?
Thanks in advance for any help.