Patent ID: 7986185

Claim:
A rail-to-rail Miller compensation method without feed forward path, comprising: forming a two-stage amplification signal main signal path comprising a first stage gain amplifier and a second stage gain amplifier electrically connected with the first stage gain amplifier in series thus forming an operational amplifier; forming a first compensation branch comprising a first amplifier, wherein an input of the first amplifier is electrically connected with an output of the second stage gain amplifier; and forming a second compensation branch comprising a second amplifier, wherein a dual relation is provided between an input stage of the first amplifier and that of the second amplifier, that is to say, if the input stage of the first amplifier is N-type, the input stage of the second amplifier is P-type; if the input stage of the first amplifier is P-type, the input stage of the second amplifier is N-type.