D 9.103 It is required to design the current-mirrorloaded differential MOS amplifier of Fig. 9.32 to obtain a differential gain of 50 V/V. The technology available provides μnCox = 4μpCox = 400 μA/V2, Vt = 0.5 V, and VA = 20 V/μm and operates from ±1 V supplies. Use a bias current I = 200 μA and operate all devices at VOV = 0.2 V. (a) Find the W/L ratios of the four transistors. (b) Specify the channel length required of all transistors. (c) If VICM = 0, what is the allowable range of vO?(d) If I is delivered by a simple NMOS current source operated at the same VOV and having the same channel length as the other four transistors, determine the CMRR obtained.