This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

ADC3244: Data Sheet Question

Part Number: ADC3244

Hello,

On page 48, in section 9.31 the data sheet for the ADC3244 (and other ADCs) says,

"9.3.1 Analog Inputs

The ADC324x analog signal inputs are designed to be driven differentially. Each input pin (INP, INM) must swing symmetrically between (VCM + 0.5 V) and (VCM – 0.5 V), resulting in a 2-VPP (default) differential input swing. The input sampling circuit has a 3-dB bandwidth that extends up to 540 MHz (50-Ω source driving 50-Ω termination between INP and INM)."

So, my question is, how when INP or INM can be no greater than VCM + 0.5V and the other line be no less than VCM - 0.5V is the differential input swing 2-VPP?  VCM + 0.5 - (VCM - 0.5) = 1.0 V.  So where does the 2-VPP come from?

Thanks.