ADA4311

I was designing a signal generator for gain control(the signal frequence is 2MHz to 30MHz).I am using ADA-4311 opamps,which terminates with a 50 ohm resistor in my design.The maximum input voltage is 2vp-p and power support is 12v.
I would like to know the max output voltage that i would get if i terminate with 20-50 ohm resistor.
This is crucial in my design.A suggestion would really help.
PS：My program applies to the powerline communications .Now i need some application references.