Tool/software:
I have a question about ADC Theory of Operation from page61 of ADC12DJ5200RF Datasheet .
The figure upper is from ADC12DJ5200RF datasheet(P61, 7.3.3.1).With about the VIN,I have a question about it.
I already know that VIN refers to the differential voltage at the ADC input port. When I generate a sinusoidal signal with Vpp = 300 mV through the signal generator and do not access any voltage affecting components such as filters, does that mean that VIN is between -0.15 and +0.15 v?
If the above is correct, when I test under the above conditions, the VIN calculated from the equation does not match the Vpp of my input signal.Is there any other reason that affects VIN？
For example, when my input signal is a sine of Vpp = 0.3 V, the ADC register setting is all default and N = 12. From HSDC pro,the output code range is -463 to +484.The VIN calculated by the above equation is -0.0945V~0.098V.
Best regards
