I like the robustness of these parts to PSS issues and the good ESD performance but my application needs lower capacitance and good leakage performance.

Q 

I like the robustness of these parts to PSS issues and the good ESD performance
but my application needs lower capacitance and good leakage performance.

A 

The ADG52xx family has been built using the same trench isolation technology
and has been optimized for low leakage, low capacitance, and low charge
injection.