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Draw an equivalent circuit considering the channel length and use it to obtain the voltage gain (The current source is ideal. Assume that all Transistors operate in the saturation mode)

Draw an equivalent circuit considering the channel length and use it to obtain the voltage gain (The current source is ideal. Assume that all Transistors operate in the saturation mode)

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Draw an equivalent circuit considering the channel length and use it to obtain the voltage gain (The current source is ideal. Assume that all Transistors operate in the saturation mode)

Explanation & Steps

The given transistor circuit is complex, thus it is better to first simplify the circuit by first replacing transistors with their equivalent resistances at drain terminal and then solve the simplified circuit to determine voltage gain. Follow these steps to determine voltage gain of the circuit.

Step (1): Replace PMOS transistors M2, M3 and NMOS transistor M3 with their resistances at output terminal by solving small-signal equivalent circuit of individual transiistor.

Step (2): Now draw and solve the small-signal equivalent circuit to determine voltage gain of the complete circuit.

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