Hey Boys

I played csgo now with my PS3 Controller and its really funny. And i realized that u can sneak much faster then normal with Shift and W. Is there a way to bind a key on the normal keypad to sneak this fast like the method with the controller? i think there is an input command from the controller how much the stick is pressed and i want to bind the optimal pressure on a key. i hope u understand what i mean.

Greetings