Hi hr_rezaee: I have already modify the MAIN OPA, i.e. modify the M=70 of M3 and M4 to M=160, and modify the M=60 of M9 and M10 to M=100, so the second pole of the main opa is pushed away, so the PM become 43, the gain become 84dB, and the GBW become 305MHz, the power is 19mW.
At the same time, I replace the CMFBs with ideal, and I found that the OPA with the ideal CMFB has the simulation result of the OPA with the actual CMFBs.
the modified circuit can be find at the attachment.
Thanx!!