Vlsi cmos interview questions and answers pdf

Posted on Sunday, May 2, 2021 4:59:57 PM Posted by Lucy G. - 02.05.2021 and pdf, the pdf 2 Comments

vlsi cmos interview questions and answers pdf

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In Boolean algebra, the true state is denoted by the number one, referred as logic one or logic high. While, the false state is represented by the number zero, called logic zero or logic low.

vlsi interview questions and answers

What voltage levels are connected to a p-type substrate and an n-type well through these connections, and why? To make the parasitic diodes reverse biased. What is their major purpose? How are design rules created? Such diagrams are especially useful in complex processses, such as DRAM processes.

Although there are extra transistors given that it uses clocks. This pull down structure is used in the dynamic gates. In static gates, inputs switch and after a finite input to output delay, output possibly switches to the expected state. We know that clock has two phases, the low phase and the high phase. Dynamic gate has two operating phases based on the clock phases. This is the pre-charge state of dynamic gate.

Vlsi important questions

Play with skew [ tweak clock network delay, slow-down clock to capturing flop and fasten the clock to launch-flop] otherwise called as Useful-skews To solve Hold Violations. Making the launch flop clock reaching delayed. Also, one can add lockup-latches [in cases where the hold time requirement is very huge, basically to avoid data slip]. During the process of plasma etching, charges accumulate along the metal strips. The longer the strips are, the more charges are accumulated.

CMOS interview questions. Latch-up pertains to a failure mechanism wherein a parasitic thyristor such as a parasitic silicon controlled rectifier, or SCR is inadvertently created within a circuit, causing a high amount of current to continuously flow through it once it is accidentally triggered or turned on. Depending on the circuits involved, the amount of current flow produced by this mechanism can be large enough to result in permanent destruction of the device due to electrical overstress EOS. Additionally, the gate-leakage in NAND structures is much lower. Explain the procedure to determine Noise Margin The minimum amount of noise that can be allowed on the input stage for which the output will not be effected.

VLSI CMOS interview questions and answers

Although there are extra transistors given that it uses clocks. This pull down structure is used in the dynamic gates. In static gates, inputs switch and after a finite input to output delay, output possibly switches to the expected state. We know that clock has two phases, the low phase and the high phase. Dynamic gate has two operating phases based on the clock phases.

This set of interview questions may be updated in future. Answers will be posted one by one as and when i prepare them! Readers are encouraged to post answers in comment section. Here we go

And in the digital electronic, the logic high is denoted by the presence of a voltage potential. Ans: Binary number consists of either 0 or 1, in simple words number 1 represents the ON state and number 0 represents OFF state. These binary numbers can combine billion of machines into one machines or circuit and operate those machines by performing arithmetic calculations and sorting operations.

Убедить абсолютно незнакомого человека отдать вам золотое кольцо скорее всего будет весьма непросто, поэтому Беккер хотел заручиться хотя бы одним преимуществом. Пока старик собирался с мыслями, Беккер не произнес ни слова. Тот огляделся вокруг, указательным пальцем разгладил усы и наконец заговорил: - Что вам нужно? - Он произносил английские слова немного в нос.

Празднично одетые испанцы выходили из дверей и ворот на улицу, оживленно разговаривая и смеясь. Халохот, спустившись вниз по улочке, смачно выругался. Сначала от Беккера его отделяла лишь одна супружеская пара, и он надеялся, что они куда-нибудь свернут. Но колокольный звон растекался по улочке, призывая людей выйти из своих домов. Появилась вторая пара, с детьми, и шумно приветствовала соседей.

Еще одна спираль. Ему все время казалось, что Беккер совсем рядом, за углом. Одним глазом он следил за тенью, другим - за ступенями под ногами. Вдруг Халохоту показалось, что тень Беккера как бы споткнулась. Она совершила судорожный рывок влево и вроде бы закружилась в воздухе, а затем снова прильнула к центру лестницы. Халохот сделал стремительный прыжок. Вот .


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COMMENT 2

  • 1) What is latch up? 2)Why is NAND gate preferred over NOR gate for fabrication? 3)What is Noise Margin? 4)Explain sizing of the inverter? 5) How do you size NMOS and PMOS transistors to increase the threshold voltage? 6) What is Noise Margin? 7) What happens to delay if you increase load capacitance? Evrard T. - 11.05.2021 at 22:05
  • So you have to prepare well from basics. Sauterptingno - 12.05.2021 at 09:25

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