Question

A cross section of a CMOS inverter is shown below. Assume the substrate is p-type.

a. Label the following: VDD, GND, all p+,n+,p,n regions.

Answer 1

In a CMOS inverter, the VDD and GND voltage labels can be added, along with the labels for p+, n+, p, and n regions.

Step-by-step explanation:

In a cross section of a CMOS inverter, the following labels can be added:

• VDD: This is the power supply voltage, which provides the high voltage level in the CMOS circuit.
• GND: This is the ground reference or zero voltage level in the CMOS circuit.
• p+: These are the p-type regions where impurities have been deliberately introduced to create positive charge donors.
• n+: These are the n-type regions where impurities have been deliberately introduced to create negative charge donors.
• p: This is the p-type substrate, which is the base material of the CMOS circuit.
• n: This is the n-type region created by introducing impurities into the p-substrate.