How do you size NMOS and PMOS transistors to increase the
threshold voltage?

Answers were Sorted based on User's Feedback



How do you size NMOS and PMOS transistors to increase the threshold voltage?..

Answer / senthil nath

I believe the question is how size NMOS/PMOS to increase the
threshold voltage of inverter? The Vt of a transistor cannot
be altered by changing it's Width or length as per my
understanding. Correct me if I am wrong.

So for the inverter, increasing PMOS width increases Vt of
inverter and increasing NMOS width decreases Vt of inverter.

Is This Answer Correct ?    15 Yes 12 No

How do you size NMOS and PMOS transistors to increase the threshold voltage?..

Answer / senthil nath

@Abhishek,
Vt of inverter means the switching voltage of the inverter
(i.e. the voltage at which the inverter starts to switch)

Is This Answer Correct ?    6 Yes 3 No

How do you size NMOS and PMOS transistors to increase the threshold voltage?..

Answer / abhishek

@ snethil... Vt of the PMOS and NMOSs change in short
channel devices with length... and what is Vt of inverter ?

Is This Answer Correct ?    4 Yes 4 No

How do you size NMOS and PMOS transistors to increase the threshold voltage?..

Answer / ramana

NMOS:Incresing the length vt will decrease.Incresing the
width vt will increase.
PMOS:Incresing the width vt will decrease.Incresing the
length vt will increase.

Is This Answer Correct ?    6 Yes 19 No

Post New Answer

More VLSI Interview Questions

What are the Advantages and disadvantages of Mealy and Moore?

0 Answers   Intel,


In Verilog code what does “timescale 1 ns/ 1 ps” signifies?

0 Answers  


Explain CMOS Inverter transfer characteristics?

0 Answers   ADS,


Who provides the DRC rules?

5 Answers   Intel,


In a SRAM layout, which metal layers would you prefer for Word Lines and Bit Lines? Why?

0 Answers   Infosys,






Draw the stick diagram of a NOR gate. Optimize it

0 Answers   Infosys,


Describe a finite state machine that will detect three consecutive coin tosses (of one coin) that results in heads.

0 Answers   Intel, Sun Microsystems,


How to improve these parameters? (Cascode topology, use long channel transistors)

0 Answers  


What is Noise Margin? Explain the procedure to determine Noise Margin?

0 Answers  


Explain why & how a MOSFET works?

2 Answers   Infosys,


What is charge sharing?

2 Answers   Cypress Semiconductor, Intel,


Mention what are three regions of operation of mosfet and how are they used?

0 Answers  


Categories