Question 2 Estimate the time delays of the 2 single MOS switches specified as follows. The average current method can be used. Both transistors are sized 1 μm/2μm, and the capacitance at the Vo node is 50 fF. (1) Find Atiti - to, the time required for Vo to change from 0 V to VDD/2, when the switch is NMOS. Vin VGn= VDD Vin⭑ VDD 0 to Vo Vo Vo(t>>to) 0.5VDD- 0 ti (2) Find At2 = tb ta, the time required for Vo to change from 0.1 VDD to 0.9VDD, when the switch is PMOS. Vin Vin VDD VGP= 0 V Vo 0 to Vo 0.9VDD 0.1VDD 0 ta th Vo(t>>to) t