Mosfet Flashcards
What does MOSFET stand for?
Metal-Oxide-Semiconductor Field-Effect Transistor
True or False: NMOS transistors are typically faster than PMOS transistors.
True
What type of charge carriers do NMOS transistors use?
Electrons
What type of charge carriers do PMOS transistors use?
Holes
Fill in the blank: NMOS transistors are generally _______ than PMOS transistors.
more conductive
What is the threshold voltage (Vth) in a MOSFET?
The minimum gate-to-source voltage that is needed to create a conductive channel between the source and drain.
In which configuration is the NMOS transistor typically used?
Pull-down configuration
In which configuration is the PMOS transistor typically used?
Pull-up configuration
What is the primary function of a MOSFET?
To act as a switch or amplifier in electronic circuits.
Which type of MOSFET has a higher input impedance?
Both NMOS and PMOS have high input impedance, but NMOS is generally preferred for low power applications.
True or False: PMOS transistors are used in complementary metal-oxide-semiconductor (CMOS) technology.
True
What is the main disadvantage of using PMOS transistors compared to NMOS?
Slower switching speed.
What are the three terminals of a MOSFET?
Gate, Drain, Source
How does the gate voltage affect the conductivity of a MOSFET?
The gate voltage controls the formation of the channel, hence affecting the current flow between the drain and source.
Fill in the blank: The _______ region in a MOSFET is where the current flows when the device is on.
channel
What is the role of the gate oxide in a MOSFET?
To insulate the gate from the channel and control the flow of current.
Which type of MOSFET is preferred for high-speed applications?
NMOS
True or False: NMOS devices require a positive gate voltage to turn on.
True
True or False: PMOS devices require a negative gate voltage to turn on.
True
What is the significance of the body effect in MOSFETs?
It affects the threshold voltage and the overall performance of the transistor.
What are the two types of MOSFETs based on the doping type of the channel?
NMOS and PMOS
Fill in the blank: In a CMOS inverter, the NMOS transistor is responsible for _______ the output when the input is high.
pulling down
What is the impact of temperature on MOSFET performance?
Increased temperature can lead to higher leakage currents and changes in threshold voltage.
What is a common application of MOSFETs?
Used in power amplifiers, switching power supplies, and digital circuits.
