I'm very much confused with the ADC terminology. I know what a differential amplifier is. And a differential amplifier can take a single-ended(unipolar) source as an input. It can of course better take bipolar inputs. There is also single-ended input amplifier where one end of the differential input is connected to the analog ground. This can only work with unipolar source.
But when it comes to datasheets of the ADCs, what does the following terminology mean?:
-Differential input channel ADCs
-Fully differential input channel ADCs
-Pseudo differential input channel ADCs
-Single ended ADCs
Is the above category about the source types(unipolar or bipolar), or is it about type of the amplifier itself?
For example if you go to this site: http://www.analog.com/en/products/analog-to-digital-converters/precision-adc-20msps/single-channel-ad-converters.html
There is a section called "Input types".