CYII4SM014KAA-GECU Cypress Semiconductor Corp, CYII4SM014KAA-GECU Datasheet - Page 24

• 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

Document #: 38-05709 Rev. *F
read noise
reset
reset noise
responsivity
reverse saturation
ROI
row noise
sense node
sensitivity
shot noise
spectral response
SNR
temporal noise
tint
Phenomenon in which the signal level decreases with increasing light intensity. It typically occurs at
A measure of pixel performance that characterizes the rise of the photodiode or sense node signal
The photon wavelength dependence of sensitivity or responsivity.
Noise associated with all circuitry that measures and converts the voltage on a sense node or
photodiode into an output signal.
The process by which a pixel photodiode or sense node is cleared of electrons. Soft reset occurs
when the reset transistor is operated below the threshold. Hard reset occurs when the reset transistor
is operated above threshold.
Noise due to variation in the reset level of a pixel. In 3T pixel designs, this noise has a component
(in units of volts) proportionality constant depending on how the pixel is reset (such as hard and soft).
In 4T pixel designs, reset noise can be removed with CDS.
The standard measure of photodiode performance (regardless of whether it is in an imager or not).
Units are typically A/W and are dependent on the incident light wavelength. Note that responsivity
and sensitivity are used interchangeably in image sensor characterization literature so it is best to
check the units.
irradiance levels much higher than saturation, such as an image taken of the sun.
Region of interest. The area within a pixel array chosen to characterize noise, signal, crosstalk, and
so on. The ROI can be the entire array or a small subsection; it can be confined to a single color plane.
Variation of row mean signal strengths. The human eye is sensitive to line patterns, so this noise is
analyzed separately.
In 4T pixel designs, a capacitor used to convert charge into voltage. In 3T pixel designs it is the
photodiode itself.
in Volts upon illumination with light. Units are typically V/(W/m
incident light wavelength. Sensitivity measurements are often taken with 550 nm incident light. At
this wavelength, 1 683 lux = 1 W/m
responsivity and sensitivity are used interchangeably in image sensor characterization literature so
it is best to check the units.
Noise that arises from measurements of discretised quanta (electrons or photons). It follows a
Poisson distribution with the strength of the noise increasing as the square root of the signal.
Signal-to-noise ratio. This number characterizes the ratio of the fundamental signal to the noise
spectrum up to half the Nyquist frequency.
Noise that varies from frame to frame. In a video stream, temporal noise is visible as twinkling pixels.
Integration time.
2
; the units of sensitivity are quoted in V/lux/sec. Note that
2
)/sec and are dependent on the
CYII4SM014KAA
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