D 9.103 It is required to design the current-mirrorloaded differential MOS amplifier of Fig. 9.32…

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  /V1A  = 20 V/μmand 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.

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