What this does this circuit do? I suspect it is an amplifier, but don't know how it amplifies.
For example Inv 5 and Inv 6 are connected in parallel with reverse sides but there is a wire between them, wouldn't that wire just cancel whatever their function is and they are there for ?
How do Inv 7 and Inv 8 affect gain of the circuit if this actually is an amplifier ?
Some information :
Assuming size of Inv7 and Inv8 3 times other inverters and I(inverter 6) =100uA and input CM equals to voltage of Point A.
Find current of other transistors Va=Vdd/2=1.5