Mos ic-s, Other Engineering

Assignment Help:

MOS IC-S:

Not all IC's are constructed using bipolar components, IC's are often designed to utilize either bipolar transistors or "Field-Effect transistors" (FETS).  The Field effect transistor is one in which the emitter-collector current is controlled by voltage rather than by a current.  Figure 3 shows the construction and operation of a MOSFET.

157_MOS IC-S.png

 

The FET may be constructed of a channel of either N-type or P-type silicon with a controlling gate sitting on top.  One end of the channel is called the source, and the other end is called the drain.  An N-channel FET has a P-type gate, so that when a positive voltage ios applied to the gate, the FET is forward biased.  There will be current flow between the source and the drain.  When a negative voltage is applied to the gate, the FET will be reversed biased, and the flow between the source and the drain will be pinched off.

The source and drain regions are diffused into the substrate.  A thin layer of silicon oxide is formed over the substarte and the appropriate windows are cut into it so that metal electrodes ) terminals) can be formed at the proper locations.  Note that the gate terminal is separated from the substrate by an extremely thin oxide layer, which is only 1 X 10-10 metres thick, but it completely isolates the gate from the substrate.


Related Discussions:- Mos ic-s

Identify the key issues evident at global mining, The atmosphere in the roo...

The atmosphere in the room was tense. Ted Kimoski, Financial Director for Global Mining, had justfinished his presentation. John Campbell, Managing Director, sat quietly making not

Various stages of creep, Q. Explain various stages of creep? Ans. CREE...

Q. Explain various stages of creep? Ans. CREEP: Creep can be defined as the process by which plastic flow occurs when a constant stress or load is applied to a material for a

Restoration of clipped speech signal, Restoration of clipped speech signal ...

Restoration of clipped speech signal using linear prediction

Output characteristics , OUTPUT CHARACTERISTICS: Figure shows a "Common...

OUTPUT CHARACTERISTICS: Figure shows a "Common Emitter" amplifier stage. Common Emitter Amplifier Stage With no base/emitter bias applied, there will be no collector

MBA Financial management, Need urgent help with Financial Management homewo...

Need urgent help with Financial Management homework assignment - evaluating company "Billabong". Due Fri 8 June (Sydney, australia time).

Chemistry, explain elecrochemical series and give its applications

explain elecrochemical series and give its applications

Electronics, explain compensated semiconductors

explain compensated semiconductors

Sustainable energy processes, PEME5451/3451 SUSTAINABLE ENERGY PROCESSES As...

PEME5451/3451 SUSTAINABLE ENERGY PROCESSES Assignment 5: Transport fuels VLE submission deadline is Friday 24th February PART 1: (worth 40%, all parts marked equally) 1. Using the

Advantages of cold working over hot working, List the advantages of cold wo...

List the advantages of cold working over hot working?

Different types of handover in a gsm network, Question: (a) Cellular sy...

Question: (a) Cellular systems are based on two main types of multiplexing, what are those two types of multiplexing? Explain how they are used to improve channel allocation in

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd