This is a PMOS differential amplifier with current mirror load. I'd like to ask some questions that is confusing.
M3 and M4 have two functions in this circuit.
1. They are loads for circuit.
2. They are used to biased the circuit. M3 and M4 makes sure that DC bias current in two branches are equal (I1/2)
Is that right?
M3 and M4 have two functions in this circuit.
1. They are loads for circuit.
2. They are used to biased the circuit. M3 and M4 makes sure that DC bias current in two branches are equal (I1/2)
Is that right?