I am designing a unity gain amplifier circuit using LMH6551. I want to design circuit without adding any resistor (i.e feedback directly connected). I want to know whether I can connect feedback directly. The reason to connect such a way is the signal driving capacity is very low (CL=5pF and current in terms of uA). So with unity gain circuit i want to increase driving capacity of analog differential signals. Can anyone suggest any other solution to implement this.