How to calculate Delay/log(Delta-Vin) for a comparator?

[canarybird33]

Delay/log(Vin) for a comparator?

How to calculate Delay/log(Delta-Vin) for a comparator?
There is an example in attachement . how they determine delta-Vin?
Why is the unit ps/dec?

 

[erikl]

I don't think these are calculated values, but simulation or even measurement results.

delta-Vin is the stimulation step voltage difference between the inputs,

the Delay/log (ΔV_in) value given in [ps/dec] units presumably is the (negative) difference per (ΔV_in) decade, related to the Worst case delay given for a ΔV_in = 1mV , i.e. for a step input difference of ΔV_in = 10mV (1 decade more) you could expect a Worst case delay of 550ps - 1*69ps = 481ps , and for a ΔV_in = 100mV (2 more decades) a Worst case delay of 550ps - 2*69ps = 412ps .