(Solved): 17. The PMOS cascode of Fig. \( 9.51 \) must provide a bias current of \( 0.5 \mathrm{~mA} \) with ...
17. The PMOS cascode of Fig. \( 9.51 \) must provide a bias current of \( 0.5 \mathrm{~mA} \) with an output impedance of \( 40 \mathrm{k} \Omega \). If \( \mu_{p} C_{o x}=50 \mu \mathrm{A}^{-\mathrm{V}^{2}} \) and \( \lambda=0.2 \mathrm{~V}^{-1} \), determine the required value of \( (W / L)_{1}=(W / L)_{2} \). Figure \( 9.51 \)