I have the ADS4249 differential ADC from Texas Instruments here is the datasheet. On page 55 it says:
For a full-scale differential input, each input pin (INP and INM) must swing symmetrically between VCM + 0.5 V and VCM – 0.5 V, resulting in a 2-VPP differential input swing
So I have a single ended signal that is converted to a differential one with an opamp (lets assume a gain of 1) and biased to VCM and fed into the INP and INM ports of the ADC. To get the full scale differential input my single ended signal has to swing between VCM-0.5V and VCM+0.5V. But my single ended signal never becomes negative. It swings from 0V to 0.5V.
How can it be done that I stil get the full-scale differential input on INP and INM?
If it swings from 0V to 1V will I get the full scale differential input?