VLSI TECHNOLOGY

ABSTRACT

This is the world of VLSI(Very large scale integration). Presently all most all the people are using  technology  in various forms like mobiles,  i-pods, i-phones etc.,  Every one enjoys technology but only a few know about VLSI design in world design and its working.  Coming to VLSI it is the process of creating integrated circuits by combing 1000`s of transistor based circuits in to a single chip. It began 1970`s when complex semi conductors and communication technologies were being developed, But now it has become key to many sophisticated electronic devices. As the subject is a big ocean we laid our emphasis on VLSI chip coupled with SDR technology used in mobiles. VLSI technology makes the mobile affordable and SDR technology make its flexible. Coming to the role of soft ware define radio abbreviated as SDR, it helps one to access different net works like CDMA, GSM, WILL etc.  Basically SDR is radio communication system which can potentially tune to any frequency band and received any modulation across a large frequency spectrum by means of little hard ware as possible and process it signals through soft ware.

VLSI TECHNOLOGY

Most of the student is exposed to ICs at a very basic level involving SSI and MSI circuits like multiplexers, encoders, decoders etc.  VLSI is the next stage of SSI and MSI. This field involves packing more and more logic devices into smaller and smaller areas. Particularly in this era of Nano technology simplicity plays a very prominent role for any device. This is possible by using VLSI design. But this design involves a lot of expertise in many fronts like system architecture, logic and circuit design way for fabrication etc. A lot of knowledge is required for the actual implementation and design of VLSI. 

VLSI TECHNOLOGY

Digital VLSI circuits are predominantly CMOS based. The way normal blocks like latches and gates are implemented is different from what students have seen so far, but the behavior remains the same. All the miniaturization involves new things to consider. A lot of thought has to go into actual implementations as well as design. Let us look at some of the factors involved.