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Question 2. Differential Pairs with Source Degeneration Assume All MOSFET have identical WL and 12 μnCoxWL = 10 mA⋅V2, λ = 0.1 V−1, VTH = 1 V, Rs = 10 kΩ, Iref = 10 μA, VDD = 5 V (a). Determine the DC currents and voltages at A and B . Ignore channel length modulation for this question only. (b). Determine the differential gain for the small signal by using the half circuit. C can be regarded as the ground for AC small signals. (c). Determine the common mode gain for a common mode small signal input and derive the value of CMRR.

Question 2. Differential Pairs with Source Degeneration Assume All MOSFET have identical WL and 12 μnCoxWL = 10 mA⋅V2, λ = 0.1 V−1, VTH = 1 V, Rs = 10 kΩ, Iref = 10 μA, VDD = 5 V (a). Determine the DC currents and voltages at A and B . Ignore channel length modulation for this question only. (b). Determine the differential gain for the small signal by using the half circuit. C can be regarded as the ground for AC small signals. (c). Determine the common mode gain for a common mode small signal input and derive the value of CMRR.

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Question 2. Differential Pairs with Source Degeneration
Assume All MOSFET have identical W L and 1 2 μ n C o x W L = 10 m A ⋅ V 2 , λ = 0.1 V − 1 , V T H = 1 V , R s = 10 k Ω , I ref = 10 μ A , V D D = 5 V L (a). Determine the DC currents and voltages at A and B . Ignore channel length modulation for this question only. (b). Determine the differential gain for the small signal by using the half circuit. C can be regarded as the ground for AC small signals. (c). Determine the common mode gain for a common mode small signal input and derive the value of CMRR.

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