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a) Refer to the multi-transistor MOSFET current source in Figure 3 below. It is given that V+ = 5V, V− = 0. For the transistors: kn′ = 40 uA/V2, VTN = 1V, and λ = 0. Design the current source such that IREF = 0.25mA, Io1 = 0.10mA, Io2 = 0.5mA and VDS2 (sat) = 0.85 V. Calculate all VGS voltages of the transistors. Figure 3 b) If λ = 0.02V-1, calculate IO2 when VDS2 = 3 V. Use relevant values obtained for Figure 3 in part (a).

a) Refer to the multi-transistor MOSFET current source in Figure 3 below. It is given that V+ = 5V, V− = 0. For the transistors: kn′ = 40 uA/V2, VTN = 1V, and λ = 0. Design the current source such that IREF = 0.25mA, Io1 = 0.10mA, Io2 = 0.5mA and VDS2 (sat) = 0.85 V. Calculate all VGS voltages of the transistors. Figure 3 b) If λ = 0.02V-1, calculate IO2 when VDS2 = 3 V. Use relevant values obtained for Figure 3 in part (a).

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a) Refer to the multi-transistor MOSFET current source in Figure 3 below. It is given that V + = 5 V , V − = 0 . For the transistors: k n ′ = 4 0 u A / V 2 , V T N = 1 V , and λ = 0 .
Design the current source such that I REF = 0.25 m A , l 01 = 0 . 1 0 m A , I 2 = 0.5 m A and V D S 2 ( sat ) = 0.85 V . Calculate all VGs voltages of the transistors.
Figure 3 (a).

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