Comparison of CCDs and CMOSs

The main comparison criteria are listed below, and are in constant evolution...

Fill factor

CMOS : 30 to 50 % "CMOS" " : " 30 " to " 50 "%"
CCD : 50 to 80 % "CCD " " :" " 50 " "to" " 80""%"

Saturation exposure

CMOS : 0.2 μ J / cm 2 "CMOS" " : " 0.2%mu"J"/"cm"^"2"
CCD : 0.05 μ J / cm 2 "CCD" " : " 0.05%mu"J"/"cm"^"2"

Dark current

CMOS > CCD "CMOS " > " CCD"

  • CMOS is not suitable for a long exposition time.

Pattern Noise

CMOS : 5 to 20 % "CMOS " ": " "5" " to" " 20""%"
CCD : 1 to 2 % "CCD " " : " 1 " to " 2"%"

  • With CMOSs, correcting a mistake after having shaded the pixels is possible.

Linear defect

  • CMOS non-linear with a receipted flow.