CYII4SM014KAA-GECU Cypress Semiconductor Corp, CYII4SM014KAA-GECU Datasheet - Page 23

• Manufacturer Part Number: CYII4SM014KAA-GECU
• Description: IC IMAGE SENSOR 14MP CMOS 49-PGA
• Manufacturer: Cypress Semiconductor Corp

Specifications of CYII4SM014KAA-GECU

• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Glossary
Document #: 38-05709 Rev. *F
blooming
camera gain constant
column noise
conversion gain
CDS
CFA
color crosstalk
CRA
DN
DNL
DSNU
fill-factor
grating monochromator
INL
luminance
IR
irradiance
Lag
Lux
NIR
pixel noise
photometric units
photon transfer
PLS
PRNU
QE
radiometric units
A constant that converts the number of electrons collected by a pixel into digital output (in DN). It can
Variation of column mean signal strengths. The human eye is sensitive to line patterns so this noise
The leakage of signal from one color channel into another when the imager is NOT saturated. The
Light flux per unit area in photometric units (lux)
Light flux per unit area in radiometric units (W/m
The leakage of charge from a saturated pixel into neighboring pixels.
be extracted from photon transfer curves.
is analyzed separately.
A constant that converts the number of electrons collected by a pixel into the voltage swing of the
pixel. Conversion gain = q/C where q is the charge of an electron (1.602E 19 Coulomb) and C is the
capacitance of the photodiode or sense node.
Correlated double sampling. This is a method for sampling a pixel where the pixel voltage after reset
is sampled and subtracted from the voltage after exposure to light.
Color filter array. The materials deposited on top of pixels that selectively transmit color.
signal can leak through either optical means, in which a photon enters a pixel of the ‘wrong’ color, or
electrical means, in which a charge carrier generated within one pixel diffuses into a neighboring
pixel.
Chief ray angle. Oblique rays that pass through the center of a lens system aperture stop. Color filter
array, metal, and micro lens shifts are determined by the chief ray angle of the optical system. In
general, optical systems with smaller CRA are desired to minimize color artifacts
Digital number. The number of bits (8, 12, 14, …) should also be specified.
Differential nonlinearity (for ADCs)
Dark signal nonuniformity. This parameter characterizes the degree of nonuniformity in dark leakage
currents, which can be a major source of fixed pattern noise.
A parameter that characterizes the optically active percentage of a pixel. In theory, it is the ratio of
the actual QE of a pixel divided by the QE of a photodiode of equal area. In practice, it is never
measured.
An instrument that produces a monochromatic beam of light. It typically consists of a broadband light
source such as a tungsten lamp and a diffraction grating for selecting a particular wavelength.
Integral nonlinearity (for ADCs)
Infrared. IR light has wavelengths in the approximate range 750 nm to 1 mm.
The persistence of signal after pixel reset when the irradiance changes from high to low values. In a
video stream, lag appears as ‘ghost’ images that persist for one or more frames.
Photometric unit of luminance (at 550 nm, 1lux = 1 lumen/m
Near Infrared. NIR is part of the infrared portion of the spectrum and has wavelengths in the
approximate range 750 nm to 1400 nm.
Variation of pixel signals within a region of interest (ROI). The ROI typically is a rectangular portion
of the pixel array and may be limited to a single color plane.
Units for light measurement that take into account human physiology.
Measurement in which a bare imager (no external lens) is irradiated with uniform light from dark to
saturation levels. Typically the source is collimated, monochromatic 550 nm light. Chapter 2 of J.
Janesick's book, Scientific Charge Coupled Devices, describes the technique in detail.
Parasitic light sensitivity. Parasitic discharge of sampled information in pixels that have storage
nodes.
Photo-response nonuniformity. This parameter characterizes the spread in response of pixels, which
is a source of FPN under illumination.
Quantum efficiency. This parameter characterizes the effectiveness of a pixel in capturing photons
and converting them into electrons. It is photon wavelength and pixel color dependent.
Units for light measurement based on physics.
2
)
2
= 1/683 W/m
CYII4SM014KAA
2
)
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