cmos vs ccd - the basics - rutgers universitycmos vs ccd which one is superior to the other? depends...
TRANSCRIPT
CMOS vs CCD - the BasicsTurgay SENLET
2/2/10
Tuesday, February 2, 2010
Definitions
CCD: Charge Coupled Device
CMOS: Complementary Metal Oxide Semiconductor
Tuesday, February 2, 2010
CMOS vs CCD
Which one is superior to the other?Depends on the jobBoth have unique strengths and weaknessesBoth have evolved a lot in last years
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CCD - How it works?
Accumulate signal charge in each pixel proportional to the local illumination intensity
CCD transfers each pixel’s charge packet sequentially to convert its charge to a voltage
Tuesday, February 2, 2010
CMOS - How it works?
Accumulate signal charge in each pixel proportional to the local illumination intensity
CMOS, the charge-to-voltage conversion takes place in each pixel
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CMOS vs CCD
Image from Photonics Spectra
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CMOS vs CCD
CMOSEasier to manufactureCamera-on-a-chipLower power consumptionSmaller sensorHigher speedsSelective ROI windowingNatural anti-blooming
CCDHigher fill factorSmaller noiseSmaller dark currentBetter pixel uniformityBetter dynamic rangeNon-rolling electronic shutter
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References
CCD vs. CMOS: Facts and FictionPhotonics Spectra - January 2001CCD vs. CMOS: Maturing Technologies, Maturing MarketsPhotonics Spectra - August 2005CCD vs. CMOSDalsa - http://www.dalsa.com/corp/markets/CCD_vs_CMOS.aspx
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Thank you
Tuesday, February 2, 2010