D 8.64 For a cascode current source such as that in Fig. 8.30, show that if the two transistors are identical, the current I supplied by the current source and the output resistance Ro are related by IRo = 2|VA|2 / |VOV|. Now consider the case of transistors that have |VA| = 3 V and are operated at |VOV| of 0.15 V. Also, let μpCox = 100 µA/V2. Find the W/L ratios required and the output resistance realized for the two cases: (a) I = 50 µA and (b) I = 200 µA. Assume that VSD for the two devices is the minimum required (i.e., |VOV|).