Can't understand these two equations about THA sample switch

[pikky]

In a paper i read:
“to complish the resolution we designed, the least f3dB should large enough:
f3dB>=fin*[2e((N-1)/2)]
fin is the frequency of the input signal；N is the resolution of the sample switch.

“in the short-channel model, the Ron of the switch ：
Ron={1+(Vd-Vs)/EcL}/{Cox*Ueff*(W/L)(Vg-0.5*Vs-0.5*Vd-Vth)}”
I can't find where "1+(Vd-Vs)/EcL" ," Vg-0.5*Vs-0.5*Vd" come from.

thanks a lot.

 

[n1cm0c]

Re: Can't understand these two equations about THA sample sw

In a paper i read:
“to complish the resolution we designed, the least f3dB should large enough:
f3dB>=fin*[2e((N-1)/2)]
fin is the frequency of the input signal；N is the resolution of the sample switch.
.

what is e in the 2e above ? What paper btw ?