CYIL1SE3000AA-GZDC Cypress Semiconductor Corp, CYIL1SE3000AA-GZDC Datasheet - Page 46

• Manufacturer Part Number: CYIL1SE3000AA-GZDC
• Description: IC IMAGE SENSOR 3MP 369-PGA
• Manufacturer: Cypress Semiconductor Corp

Specifications of CYIL1SE3000AA-GZDC

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

In slave mode, you have full control through the pins Exposure 1 and Exposure 2. You must configure the multiple slope parameters
for the application and interpret the pixel data accordingly.
Off Chip FPN correction
FPN is a kind of spatial noise, a noise that does NOT change with
time.FPN comes from two different sources. The first source
involves the variations between individual pixels. Within a CMOS
image sensor, the device is designed such that each pixel is
exactly similar to all the others.
Although each pixel is very similar to all of the others within the
array, there are slight variations. These variations arise from
variations in threshold voltages and offsets of the amplifier within
each pixel. Because these can vary for each pixel within the pixel
array; they are referred to as Pixel FPN.
The second source of FPN involves the performance variations
of the amplifiers shared by each column of the pixel array. The
information within the pixel array is read out on a
column-by-column basis through these column amplifiers. When
one amplifier behaves slightly different from another, the entire
Document Number: 001-44335 Rev. *C
Figure 35. Dynamic Range Extended by Multiple Slope Capability
Figure 36. Dual Slope Timing in Slave Mode
PRELIMINARY
column can be affected. When this happens, it results in what
appears to be vertical lines in the image. This is commonly called
Column FPN. Of the two sources of FPN, column FPN is far more
noticeable than pixel FPN.
Note LUPA 3000 has no on-chip FPN correction so it has to be
corrected off-chip in the software.
FPN can be calibrated off chip by subtracting a dark image from
all captured images. For optimal results two guidelines can be
followed:
■
■
Use an averaged dark image to calibrate FPN, this eliminates
other noise sources that would be present in the dark image.
Use a different dark image to calibrate for different operation
conditions. Different operation conditions can be changes in
temperature, FOT and ROT timing, and gain settings.
CYIL1SN3000AA
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