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Sunday, November 2, 2014

#311 Various shades of CMOS

In some segments of semiconductor community the term CMOS (Complementary Metal-Oxide-Semiconductor) is immediately associable with the digital ICs where it is a MOSFET’s configuration of choice in both logic and memory applications. With unmatched by other types of digital circuitry low power consumption/dissipation, performance as a switch and scalability, CMOS will remain a workhorse of digital electronics for years to come.

  

Not to disregard is the role CMOS also plays in performing analog functions for instance in operational amplifier ICs and in RF circuitry. Because of its effectiveness in both digital and analog applications, CMOS is a natural choice for the implementation of mixed signal functions which combine digital and analog circuits on the same chip.

 

What seems to be not as well recognized is the use of CMOS devices for image sensing. Here, CMOS is a lower cost, low-power replacement for the better established CCD (Charge Coupled Devices) image sensors. With inferior to CCD image quality and sensitivity, CMOS imaging devices are the good match for the low-cost, entry level digital cameras.

 

Frank Wanlass, who invented CMOS in 1963 at Fairchild Semiconductor, very likely did not anticipate such a divers uses for its invention

 

Posted by Jerzy Ruzyllo at 09:23 PM | Semiconductors | Link



Semi1source.com/blog is the personal blog of Jerzy Ruzyllo. With over 35 years of experience in academic research and teaching in the area of semiconductor engineering (currently holding position of a Distinguished Professor of Electrical Engineering and Professor of Materials Science and Engineering at Penn State University), he has a unique perspective on the developments in this progress driving technical domain and enjoys blogging about it.



With over 2000 terms defined and explained, Semiconductor Glossary is the most complete reference in the field of semiconductors on the market today.






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