Hi, all;

   suppose i have a garden-variaty common source amplifer , and also suppose i put a Miller compensation cap,say Cc , between the drain and gate, now i add a zero to my system and the value is Gm/Cc, i wonder if anybody here can give me an intuitive explaination why it is this form.how to think of it.  

  in Razavi's book, he gives a explaination, it is something about current flowing  back from the output. but i just can not get it


Thanks  all