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(a) For an NMOS Wilson current source as shown in Figure 4, transistor parameters are: VTN = 0.8 V, λ = 0.02 V−1, Kn1 = 2Kn2 = 3Kn3 = 0.25 mA/V2. Given IREF = 0.5 mA. If the voltage VD changes by 2 V, what is the percentage change in the output current? [13 Marks] Figure 4

(a) For an NMOS Wilson current source as shown in Figure 4, transistor parameters are: VTN = 0.8 V, λ = 0.02 V−1, Kn1 = 2Kn2 = 3Kn3 = 0.25 mA/V2. Given IREF = 0.5 mA. If the voltage VD changes by 2 V, what is the percentage change in the output current? [13 Marks] Figure 4

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(a) For an NMOS Wilson current source as shown in Figure 4, transistor parameters are: V T N = 0.8 V , λ = 0.02 V − 1 , K n 1 = 2 K n 2 = 3 K n 3 = 0.25 m A / V 2 . Given I R E F = 0.5 m A . If the voltage V D changes by 2 V , what is the percentage change in the output current? [13 Marks] Figure 4

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