VLSI design course in pune
Why learn VLSI design ?
The expansion of VLSI is ‘Very-Large-Scale-Integration’. Here, the term ‘Integration’ refers to the complexity of the Integrated circuitry (IC). An IC is a well-packaged electronic circuit on a small piece of single crystal silicon measuring few mms by few mms, comprising active devices, passive devices and their interconnections. The technology of making ICs is known as ‘MICROELECTRONICS’. This is because the size of the devices will be in the range of micro, sub micrometers. The examples include basic gates to microprocessors, op-amps to consumer electronic ICs. There is so much evolution taken place in the field of Microelectronics, that the IC industry has the expertise of fabricating an IC successfully with more than 100 million MOS
transistors as of today. ICs are classified keeping many parameters in mind. Based on the transistors count on the IC, ICs are classified as SSI, MSI, LSI and VLSI. The minimum number of transistors on a VLSI IC is in excess of 40,000.
VLSI is ‘Very Large Scale Integration’. It is the process of designing, verifying, fabricating and testing of a VLSI IC or CHIP.A VLSI chip is an IC, which has transistors in excess of 40,000. MOS and MOS technology alone is used. The active devices used are CMOSFETs. The small piece of single crystal silicon that is used to build this IC is called a ‘DIE’. The size of this die could be 1.5cmsx1.5cms. This die is a part of a bigger circular silicon disc of diameter 30cms.This is called a ‘WAFR’. Using batch process, where in 40 wafers are processed simultaneously, one can fabricate as many as 12,000 ICs in one fabrication cycle.