The CMOS inverter consist of:a)Enhancement mode n-MOS transistor and depletion mode p-MOS transistorb)Enhancement mode p-MOS transistor and depletion mode n-MOS transistorc)Enhancement mode p-MOS transistor and enhancement mode p-MOS transistord)Enhancement mode p-MOS transistor and enhancement mode n-MOS transistorCorrect answer is option 'D'. Can you explain this answer?

Question

Answer

Introduction:
CMOS inverter is a digital logic gate that is used to convert a logic level from high to low or low to high. It is one of the fundamental building blocks of digital circuits.

Components of CMOS inverter:
The CMOS inverter consists of two types of MOSFETs, namely, P-channel MOSFET and N-channel MOSFET. The circuit uses a PMOS transistor to pull up the output to the power supply voltage level (typically VDD) and an NMOS transistor to pull the output down to the ground voltage level (typically 0V). The two transistors are connected in series, such that the output of one transistor is connected to the input of the other.

Operation of CMOS inverter:
The operation of the CMOS inverter is based on the principle of complementary MOSFETs. When the input voltage is high, the PMOS transistor turns off and the NMOS transistor turns on, pulling the output voltage down to the ground voltage level. When the input voltage is low, the NMOS transistor turns off and the PMOS transistor turns on, pulling the output voltage up to the power supply voltage level.

Answer:
The correct answer is option D, i.e., the CMOS inverter consists of an enhancement mode p-MOS transistor and an enhancement mode n-MOS transistor. This is because the PMOS transistor is an enhancement mode MOSFET, which requires a positive gate voltage to turn on, while the NMOS transistor is an enhancement mode MOSFET, which requires a negative gate voltage to turn on. The two transistors are connected in series, with the output of the PMOS transistor connected to the input of the NMOS transistor, and vice versa.

Conclusion:
The CMOS inverter is an important building block of digital circuits, and it is used to convert logic levels from high to low or low to high. It consists of two types of MOSFETs, namely, P-channel MOSFET and N-channel MOSFET, which are connected in series. The PMOS transistor is an enhancement mode MOSFET, while the NMOS transistor is an enhancement mode MOSFET.

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