(Solved):   Consider a design of the folded-cascode op amp of Fig. \( 13.10 \) for which \( I=240 \m ...

 

Consider a design of the folded-cascode op amp of Fig. \( 13.10 \) for which \( I=240 \mu A, I_{B}=150 \mu A \), and \( \left|V_{O V}\right| \) for all transistors is \( 0.25 \mathrm{~V} \). Assume that the fabrication process provides \( k_{n}^{\prime}=100 \mu \mathrm{A} / \mathrm{V}^{2}, k_{p}^{\prime}=40 \) \( \mu \mathrm{A} / \mathrm{V}^{2},\left|V_{A}^{\prime}\right|=20 \mathrm{~V} / \mu \mathrm{m}, V_{D D}=V_{S S}=2.5 \mathrm{~V} \), and \( \left|V_{t}\right|=0.75 \mathrm{~V} \). Let all transistors have \( L=1 \mu \mathrm{m} \) and assume that \( C_{L}=5 \mathrm{pF} \). Find \( I_{D}, g_{m}, r_{o} \), and \( W / L \) for all transistors. Find the allowable range of \( V_{I C M} \) and of 13.2 The Folded-Cascode CMOS Op Amp 102. the output voltage swing. Determine the values of \( A_{v}, f_{t}, f_{P} \), and \( S R \). What is the power dissipation of the op amp?