# Problem 1: Calculate I copy in terms of IREF in each of the following circuits. Problem 2: Calculate I copy in terms of IREF in each of the following circuits. Assume the same 𝛽 for all transistors.

Problem 1: Calculate I copy in terms of IREF in each of the following circuits. Problem 2: Calculate I copy in terms of IREF in each of the following circuits. Assume the same 𝛽 for all transistors. Problem 3: Consider the following current mirror. If 𝐼1 =12 𝐼𝑅𝐸𝐹, determine the value of 𝑅𝑝 in terms of 𝛽, 𝑉𝑇, and 𝐼𝑅𝐸𝐹 only. Assume 𝑄𝑅𝐸𝐹and 𝑄1 are identical Problem 4: For the circuit shown, design the circuit for a power budget of 3 mW Problem 5: For the given figure, the transistors parameters are 𝑉𝐵𝐸 = 0.7 𝑉, 𝛽 = 80, and 𝑉𝐴 = ∞. a) Derive an expression for 𝐼𝑂in terms of 𝐼𝑅𝐸𝐹, 𝛽, and 𝑅2.

b) For 𝑅2 = 10 𝑘Ω and 𝑉+ = 10 𝑉, design the circuit such that 𝐼𝑂 = 0.70 mA. What is the value of 𝐼𝑅𝐸𝐹?

*Problem 6: For the source follower determine the voltage gain and the output impedance. Assuming
𝑘𝑛 ′ = 100 µA/V2 , (W/L)1 = (W/L)2 = 2(W/L)REF = 10/0.18, IREF = 0.1 mA, and λn = 0.1 V-1 Problem 7: For the common-base stage amplifier determine the voltage gain and the input/output impedance. Assuming 𝑅𝐶 = 500 Ω, 𝛽 = 80, 𝑉𝐴 = ∞, 𝐴𝐸1 = 3𝐴𝑅𝐸𝐹. Posted

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