The ideal CMFB circuit i made don't have any mistake?
if we use that kind of ideal CMFB circuit, the opamp with ideal CMFB have to work corretly. right?
your amplifier is a two-stage amplifier, so if your ideal cmfb circuit feeds the voltage to the gate of p-current mirror, your cmfb loop is a positive feedback loop. in order to make the amplifier work, change the polarity of cmfb amplifier vcvs