fightshan
Junior Member level 3
tp=&arnumber=4145322https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=4145322
Generally, in my opinion, there is no need to stablize the common output voltage of source follower(SF), because the type of input transistor and the type of bias transistor are the same, and there is no mismatch in PMOS and NMOS current.
The cirucit give a uncommon (actually,it is uncommon for me ,because I didn`t see it before.) CMFB structure , this circuit doesn`t sense the output voltage, this is really different from the CMFB which using large resistor or switched cap in the usual text books.
So, I wonder what is the advantage of this CMFB structure? Does it has any disadvantage compared to traditional CMFB circuit?