Summary Unit1

Summary Unit1 - Unit 1 IC large electronic components interconnected to perform certain functions Components passive(resistors capacitors and

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Unit 1 IC: large # electronic components interconnected to perform certain functions Components: passive (resistors, capacitors) and active (diodes, transistors, have ability to produce gain or amplify signal) Monolithic IC: entire IC constructed on single substrate Moore’s Law: doubling in # transistors per chip every 2 years o Chip surface area increase by 16%/yr o Minimum feature size decrease by 30%/yr Why make transistors smaller? o Faster switching (computing) o Less power consumption/better efficiency o Means channel length has to shrink (produce tunnelling) so cross talk increases between source and drain, this is intrinsic limitation SIA: semiconductor industry association NTRS: national technology roadmap for semiconductors Intrinsic silicon: o Not doped o Carrier concentration 10 10 electrons/cm 3 o 5 x 10 22 atoms/cm 3 o N i =3.9x10 16 T 3/2 exp(-0.605/RT) o Why silicon? Abundant, native oxide (dielectric), good barrier material Arsenic: n-type, Boron: p-type
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This note was uploaded on 07/18/2011 for the course NE 343 taught by Professor Aziz during the Spring '11 term at Waterloo.

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Summary Unit1 - Unit 1 IC large electronic components interconnected to perform certain functions Components passive(resistors capacitors and

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