IBIS4-1300.pdf 데이터시트 (총 30 페이지) - 파일 다운로드 IBIS4-1300 데이타시트 다운로드

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IBIS4-1300
1.3 MPxl Rolling Shutter CMOS Image
Sensor
Overview
The IBIS4-1300 is a digital CMOS active pixel image sensor
with SXGA format.
Due to a patented pixel configuration a 60% fill factor and 50%
quantum efficiency are obtained. This is combined with an
on-chip double sampling technique to cancel fixed pattern
noise.
Features
• SXGA resolution: 1280 x 1024 pixels
• High sensitivity 20 µV/e-
• High fill factor 60%
• Quantum efficiency > 50% between 500 and 700 nm.
• 20 noise electrons = 50 noise photons
• Dynamic range: 69 dB (2750:1) in single slope operation
• Extended dynamic range mode (80…100 dB) in double
slope integration
• On-chip 10 bit, 10 mega Samples/s ADC
• Programmable gain & offset output amplifier
• 4:1 sub sampling viewfinder mode (320x256 pixels)
• Electronic shutter
• 7 x 7 µm2 pixels
• Low fixed pattern noise (1% Vsat p/p)
• Low dark current: 344 pA/cm2
• (1055 electrons/s, 1 minute auto saturation)
• RGB or monochrome
• Digital (ADC) gamma correction
Part Number
Part Number
Package Glasslid RGB/B&W
CYII4SC1300AA-QSC LCC
S8612 RGBBayer
pattern
CYII4SM1300AA-QDC LCC
D263
B&W
Cypress Semiconductor Corporation
Document Number: 38-05707 Rev. *B
• 198 Champion Court • San Jose, CA 95134-1709 • 408-943-2600
Revised January 2, 2007
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IBIS4-1300
TABLE OF CONTENTS
Overview ............................................................................................................................. 1
Features .............................................................................................................................. 1
Part Number ........................................................................................................................ 1
Architecture of the image sensor.......................................................................................... 4
Image sensor core - focal plane array ...................................................................................... 5
Output amplifier ........................................................................................................................ 11
Analog to digital converter ........................................................................................................ 17
ADC timing ............................................................................................................................... 18
Operation of the image sensor ............................................................................................ 20
Set configuration & pulse timing ............................................................................................... 20
Illumination control ................................................................................................................... 26
"Double slope" or "High-dynamic range" mode ........................................................................ 27
Electrical parameters ............................................................................................................... 28
Pin configuration .................................................................................................................. 29
Pin list ....................................................................................................................................... 29
Bonding pad geometry for the IBIS4-1300 ............................................................................... 31
Package .............................................................................................................................. 33
Cover glass .............................................................................................................................. 33
Ordering Information ........................................................................................................... 35
FAQ ..................................................................................................................................... 35
Temperature dependence of dark signal ................................................................................. 35
Useful range of "double slope" ................................................................................................. 35
Skipping rows or columns ........................................................................................................ 36
Disclaimer ............................................................................................................................ 36
Document History Page ...................................................................................................... 37
LIST OF FIGURES
Block diagram ................................................................................................................................... 4
Architecture of the image sensor core .............................................................................................. 4
Pixel selection - principle .................................................................................................................. 5
Spectral response * fill factor of the IBIS4-1300 pixels ..................................................................... 7
Near infrared spectral response ....................................................................................................... 8
IBIS4-1300 response curve - two pixels - lowest gain setting (0000) ............................................... 9
Output amplifier architecture ............................................................................................................. 12
Offset adjustment: fast offset adjustment mode ............................................................................... 13
Slow offset adjustment mode ............................................................................................................ 13
Output amplifier DC gain .................................................................................................................. 15
Output amplifier bandwidth for different gain settings ....................................................................... 16
Typical transfer characteristic of the output amplifier (no clipping, Voffset = 2 V, input signal during offset
adjustment is 1.2 V) ........................................................................................................................... 16
Suggested circuit for high and low references of DAC ..................................................................... 17
Document Number: 38-05707 Rev. *B
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IBIS4-1300
ADC timing ........................................................................................................................................ 18
Linear and non-linear ADC conversion characteristic ....................................................................... 19
Typical operation mode (readout of a frame) .................................................................................... 20
Timing of Y shift registers (for row selection) .................................................................................... 22
End-of-scan pulse ............................................................................................................................. 22
Timing constraints for row readout initialization (blanking time) ....................................................... 23
Pulse on 'CALIB_F'& 'UNITYGAIN' to be given once per frame, or on CALIB_S once per line ....... 24
Timing of X shift register and pixels read-out ................................................................................... 25
Pixel timing ....................................................................................................................................... 25
Pulse sequence used in IBIS4 breadboard v. jan 2000 .................................................................... 26
Schematic representation of the curtain type electronic shutter ....................................................... 26
response curve of the pixels in dual slope integration ...................................................................... 27
Linear long exposure time ................................................................................................................ 27
Linear short exposure time ............................................................................................................... 28
Double slope integration ................................................................................................................... 28
Pin layout and package, top view ..................................................................................................... 33
Transmission characteristics of the BG39 glass used as NIR cut-off filter for the FUGA1000 color image
sensors .............................................................................................................................................. 34
Transmission characteristics of the D263 glass used as protective cover for the IBIS4-1300 monochrome
image sensors .................................................................................................................................... 34
LIST OF TABLES
Optical & electrical characteristics .................................................................................................... 5
Calculation of sensitivity in [V/lx.s]..................................................................................................... 8
Pins of the image sensor core .......................................................................................................... 10
Summary of output amplifier specifications ...................................................................................... 11
Pins involved in output amplifier circuitry .......................................................................................... 14
DC gain of output amplifier for different gain settings ....................................................................... 15
ADC specifications ............................................................................................................................ 17
Pins of the ADC ................................................................................................................................ 18
Co-ordinate of the row or column selected by the Y/X shift registers after a # clock periods in viewfinder
mode and full image mode ................................................................................................................. 21
Timing constraints on row initialization pulses sequence ................................................................. 23
FillFactory and Cypress part numbers .............................................................................................. 35
Document Number: 38-05707 Rev. *B
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Architecture of the image sensor
Block diagram
1280 x 1024 pixel array
IBIS4-1300
output
amplifier
10 bit ADC
The IBIS4-1300 is an SXGA CMOS image sensor. The chip is
composed of 3 modules: an image sensor core, a
programmable gain output amplifier, and an on-chip 10 bit
ADC.
Figure 1. Architecture of the image sensor core
Pixel array
1286 x 1030 pixels
Clock_YL
Sync_YL
Column amplifiers
X shift register
Clock_YR
Sync_YR
Document Number: 38-05707 Rev. *B
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IBIS4-1300
Image sensor core - focal plane array
Figure 1. shows the architecture of the image sensor core.
The core of the sensor is the pixel array with 1280 x 1024
(SXGA) active pixels.
The name 'active pixels' refers to the amplifying element in
each pixel. This type of pixels offer a high light sensitivity
combined with low temporal noise. The actual array size is
1286 x 1030 including the 6 dummy pixels in X and Y. Although
the dummy pixels fall outside the SXGA format, their
information can be used e.g. for color filter array interpolation.
Figure 2. Pixel selection - principle
X shift register
Next to the pixel array there are two Y shift registers, and one
X shift register with the column amplifiers. The shift registers
act as pointers to a certain row or column. The Y readout shift
register accesses the row (line) of pixels that is currently
readout. The X shift register selects a particular pixel of this
row. The second Y shift register is used to point at the row of
pixels that is reset. The delay between both Y row pointers
determines the integration time -thus realizing the electronic
shutter.
A clock and a synchronization pulse control the shift registers.
On every clock pulse, the pointer shifts one row/column
Table 1. optical & electrical characteristics
Pixel characteristics
Pixel structure
Photodiode
Pixel size
Resolution
Pixel rate with on-chip ADC
Frame rate with on-chip ADC
further. A sync pulse is used to reset and initialize the shift
registers to their first position.
The smart column amplifiers compensate the offset variations
between individual pixels. To do so, they need a specific pulse
pattern on specific control signals before the start of the row
readout.
Table 1. summarizes the optical and electrical characteristics
of the image sensor. Some specifications are influenced by the
output amplifier gain setting (e.g. temporal noise, conversion
factor,...). Therefore, all specifications are referred to an output
amplifier gain equal to 1.
3-transistor active pixel
High fill factor photodiode
7 x 7 µm2
1286 x 1030 pixels
SXGA plus 6 dummy rows & columns
Nominal 10 MHz (note 1) (note 2)
About 7 full frames/s at nominal speed
Document Number: 38-05707 Rev. *B
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