The Transfer Characteristic Figure la shows the schematic of a CMOS inverter. The device on top is a PMOS device; it is "off" for a high input voltage and "on" for a low input. The device on the bottom is an NMOS device; it is "on" for a high input and "off" for a low input. Figure lb shows a rough voltage transfer characteristic (V. vs V.). Problem 1) (a) Draw the inverter schematic in VOOT Mp VDD PSPICE for only one inverter. For V = 5V, do a "DC sweep" of the input voltage and plot the Transfer Characteristic (V. vs V.) in PROBE. (See Appendix I for PSPICE tips) MN VDD Figure 1. a) CMOS inverter where MN is an NMOS device and MP is a PMOS device. b) Inverter voltage transfer curve. (b) Next add two extra inverters (See Figure 2.) and compare the transfer characteristic of the combination to the transfer characteristic you got in (1a).