Hi everyone,
I am designing a folded cascode op-amp with PMOS input diff pair.
I am able to put all transistors in saturation in typical corner, where as in fast corner few are not in saturation.
look at the below attached image
In fast corner the transistor m6 & m7 are in linear(and also the drop across m6 is almost power supply(3.5689))
power supply is 3.6v.
I am updated the attachment so that you can see clearly.
As you said, using the bias circuit directly make complex to me. Thats why i am using plug in voltages.