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Transistors operate in the saturation region. Please use subscripts to refer to M1 and M2. VB is a bias voltage. Please ignore backgate effect. Please consider ro. Do NOT include any capacitors. Do NOT need to show results in a fully expanded form. (1) Draw the small-signal model of the differential-mode half circuit. Provide a symbolic expression for the differential-mode voltage gain. (2) Draw the small-signal model of the common-mode half circuit. Provide a symbolic expression for the common-mode voltage gain.

Transistors operate in the saturation region. Please use subscripts to refer to M1 and M2. VB is a bias voltage. Please ignore backgate effect. Please consider ro. Do NOT include any capacitors. Do NOT need to show results in a fully expanded form. (1) Draw the small-signal model of the differential-mode half circuit. Provide a symbolic expression for the differential-mode voltage gain. (2) Draw the small-signal model of the common-mode half circuit. Provide a symbolic expression for the common-mode voltage gain.

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Transistors operate in the saturation region. Please use subscripts to refer to M1 and M2. VB is a bias voltage. Please ignore backgate effect. Please consider ro. Do NOT include any capacitors. Do NOT need to show results in a fully expanded form. (1) Draw the small-signal model of the differential-mode half circuit. Provide a symbolic expression for the differential-mode voltage gain. (2) Draw the small-signal model of the common-mode half circuit. Provide a symbolic expression for the common-mode voltage gain.

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