6. Given Kn3 = 0.7 mA/V2, Kn1=Kn2=Kn4=0.35MA/V2, RD=91kOhm, and the current through R1 is 0.3 mA, what is the single-ended small-signal differential gain AVo/A(V1-V2) ? VDD RD RD ID1 ID2 Vo VDD V2 M1 M2 R1 M3 M4 Vss

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Thevenin Theorem

Any linear circuit, no matter how complex, maybe simplified to an equivalent circuit utilizing only a single voltage source and series resistance coupled to a load, according to Thevenin's Theorem. The superposition principle says that all foundational equations must be linear, and the notion of "linear" is still the same (i.e., there should not be any exponentials or roots). This is particularly the case when operating with passive elements like resistors, inductors, and capacitors. However, some components (particularly some gaseous and semiconductor devices like tunnel diode, Schottky diode, transistors like BJT, MOSFET) are nonlinear, meaning their current resistance fluctuates with voltage and current. As a result, circuits made up of these parts are known as nonlinear circuits.