A CMOS inverter is implemented with matched FETs having Vt 5 Vtn 5 2Vtp 5 0.2VDD. (a) Show that the maximum output current that the inverter can sink from an external load with its output within...

A CMOS inverter is implemented with matched FETs having Vt 5 Vtn 5 2Vtp 5 0.2VDD. (a) Show that the maximum output current that the inverter can sink from an external load with its output within 0.1VDD of ground, and can source to an external load with its output within 0.1VDD of VDD, is IO(max) 5 0.075k V DD 2 , where k 5 kn 5 kp. (b) Assuming k n 5 100 A/V2 and k

p 5 40 A/V2 , specify (WyL)n and (WyL)p for IO(max) 5 0.5 mA if VDD 5 3 V. What is the resulting value of Im? (c) Find the output resistance for vO 5 VOL and for vO 5 VOH.