The preference for NMOS, when compared to other logic families arises

a) as it uses more silicon area

b) as it consumes less static power

c) as it utilizes a smaller silicon area

d) as it has a higher input impedance

Which of the following options is correct?

Question

Question

This question was previously asked in

UGC NET Paper 2: Electronic Science June 2019 Official Paper

Attempt Online

Answer 1

NMOS has the following characteristics:

1. it uses a smaller silicon area.

2. it consumes high static power

3. it has a lower input impedance

Important points:

CMOS technology is mainly used in digital logic circuits construction like microprocessors, microcontrollers, memory, etc.
NMOS and PMOS technologies are also used in designing digital logic circuits and in this collection and transfer of charge mechanism is not used.
Nowadays CMOS technology is used widely and no PMOS and very rare NMOS technology is used in designing an integrated circuit.

The key difference between NMOS, PMOS, and CMOS

NMOS	PMOS	CMOS
Electrons are major carriers.	Hole are major carriers.	Both electrons and holes are a carrier.
The P-type substrate is used	The N-type substrate is used	Both types of substrate are used based on application
Source and drain are n-type	Source and drain are p-type	CMOS used NMOS and PMOS simultaneously.
Conduct only when high voltage is applied to the gate	Conduct only when low voltage is applied to the gate.	NMOS and PMOS gate is connected based on applied voltage only one is conducted.
Faster than PMOS	Slower	Very faster
Rarely used in the design	Almost not used for design	Mostly CMOS is used for design.
Good noise immunity	Less noise immunity	Excellent noise immunity