ADC12DL500: Aperture time in case of low frequency clock

Tool/software:

Hi team,

I want to confirm the effective aperture time of this ADC when operated at lower sampling clock frequencies.
My understanding is that, since the device specifies an 8GHz analog input bandwidth, the aperture time must be extremely short (on the order of ≤1 ps).

Is this interpretation correct?

Best regards,
Goto