Q11. [1.5 marks] The MOS cascode of the circuit below must provide a bias current of 0.5 mA with an output impedance of at least 50k. If μnCox = 100 μA/V2 and (W/L) = 20/0.18 for both transistors, compute the maximum tolerable value of λ.
A current mirror circuit is shown in figure 10.2. The component/device parameters are given below as: Vdd = 1.2 V, Iref = 15 μA, VGS = 600 mV Vout = 700 mV Dimensions of M1: W1 = 2×120 nm and L1 = 60 nm Dimensions of M2: W2 = 2×120 nm and L2 = 60 nm Assume that both the devices are in saturation. It is given that λ = 0.9 V−1 for both transistors. Rest of the device parameters are identical for both the Fig10.2 transistors. 2) Q10.2: For the figure 10.2, find the absolute value of output current Iout (in μA) flowing through drain terminal of M2. Enter the closest answer (in μA) 2 points 3) Q10.3: For the circuit shown in figure 10.2, what is the drain to source small signal resistance of M2 in kΩ? Enter your answer (in kΩ) 2 points
Ex 6.2: For the circuit in Figure 6.3, assume transistor parameters of β = 150, VBE(on) = 0.7 V, and VA = 150 V. The circuit parameters are VCC = 5 V, VBB = 1.025 V, RB = 100 kΩ, and RC = 6 kΩ. (a) Determine the small-signal hybrid- π parameters gm, rπ, and ro. (b) Find the small-signal voltage gain Av = Vo/Vs. (Ans. (a) gm = 18.75 mA/V, rπ = 8 kΩ, ro = 308 kΩ; (b) Av = −8.17) EXERCISE PROBLEM