QUESTION 14: The parameter for the circuit in Figure 10.17 are V+ = +5 V and V- = 0 V. The transistor parameters are VTN = 0.7 V, kn′ = 74 μA/V2, and λ = 28×10−3 V−1. The transistor width-to-length ratios are (W/L)1 = 23, (W/L)2 = 13, and (W/L)3 = 3. Find VGS1 voltage. Then, determine IREF and IO at VDS2 = 2.5 V. VGS1 = VGS2(V) Format: 6.269 IREF(μA) Format : 547.3383 Original IO at VGS1(μA) Format : 789.8504 RO at VGS1(kΩ) Format : 67.7883 Change in IO(μA) Format: 50.784027979257 IO at required VDS2(μA) Format: 379.8239 Figure 10.17
![(b) For a MOSFET current source shown in Figure 5 the circuit parameters are: V+ = 3 V and V − = −3 V. Transistor parameters for NMOS are: VTN = 0.7 V, kn′ = 200 μA/V2 and λn = 0.01 V−1; and the transistor parameters for PMOS are: VTP = −0.6 V, kp′ = 80 μA/V2 and λp = 0.03 V−1. The transistor aspect ratios are: (W/L)1 = 10, (W/L)2 = 35, (W/L)3 = 5 and (W/L)4 = 15. Find IO, IREF and the VGS voltages for all transistors if the minimum voltage at the drain of transistor M2, i.e. VD2 is −2.3 V. [12 Marks] Figure 5](https://www.doubtrix.com/uploads/editor/2283158972ZKWioHWPli.jpg)
