ON Semiconductor KAC-12040 User Manual

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KAC-12040
f
4000 (H) x 3000 (V) CMOS Image Sensor
Description
Each LVDS output bank consists of up to 8 differential pairs operating at 160 MHz DDR for a 320 Mbps data rate per pair. The pixel architecture allows rolling shutter operation for motion capture with optimized dynamic range or global shutter for precise still image capture.
Table 1. GENERAL SPECIFICATIONS
Parameter Typical Value
Architecture 5T Global Shutter CMOS Resolution 12 Megapixels Aspect Ratio 4:3 Pixel Size Total Number of Pixels 4224 (H) × 3192 (V) Number of Effective Pixels 4016 (H) × 3016 (V) Number of Active Pixels 4000 (H) × 3000 (V) Active Image Size 18.8 mm (H) × 14.1 mm (V)
Master Clock Input Speed 5 MHz to 50 MHZ Maximum Pixel Clock Speed 160 MHz DDR LVDS, 320 Mbps Number of LVDS Outputs 64 Differential Pairs Number of Output Banks 8, 4, or 2 Frame Rate, 12 Mp 1−70 fps 10 bits
Charge Capacity 16,000 electrons Quantum Efficiency
KAC−12040−CBA KAC−12040−ABA
Read Noise (at Maximum LVDS Clock)
Dynamic Range 73 dB, Rolling Shutter
Blooming Suppression > 10,000x Image Lag 1.3 electron Digital Core Supply 2.0 V Analog Core Supply 1.8 V Pixel Supply 2.8 V & 3.5 V Power Consumption 1.5 W for 12 Mp @ 70 fps 10 bits Package 267 Pin Ceramic Micro-PGA Cover Glass AR Coated, 2-sides
NOTE: All Parameters are specified at T = 40°C unless otherwise noted.
4.7 mm (H) × 4.7 mm (V)
23.5 mm (Diagonal), 4/3 Optical Format
1−75 fps 8 bits
40%, 47%, 45% (470, 540, 620 nm) 53%, 15%, 10% (500, 850, 900 nm)
3.7 e− rms, Rolling Shutter
25.5 e
rms, Global Shutter
56 dB, Global Shutter
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Figure 1. KAC−12040 CMOS Image Sensor
Features
Global Shutter and Rolling Shutter
Very Fast Frame Rate
High NIR Sensitivity
Multiple Regions of Interest
Interspersed Video Streams
Applications
Machine Vision
Intelligent Transportation Systems
Surveillance
ORDERING INFORMATION
See detailed ordering and shipping information on page 2 o this data sheet.
© Semiconductor Components Industries, LLC, 2016
March, 2016 − Rev. 5
1 Publication Order Number:
KAC−12040/D
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KAC−12040
The image sensor has a pre-configured QFHD (4 × 1080p, 16:9) video mode, fully programmable, multiple ROI for windowing, programmable sub-sampling, and reverse readout (flip and mirror). The two ADCs can be configured
clamping, overflow pixel for blooming reduction, black-sun correction (anti-eclipse), column and row noise correction, and integrated timing generation with SPI control, 4:1 and 9:1 averaging decimation modes.
for 8-bit, 10-bit, 12-bit or 14-bit conversion and output.
Additional features include interspersed video streams (dual-video), on-chip responsivity calibration, black
ORDERING INFORMATION
T able 2. ORDERING INFORMATION − KAC−12040 IMAGE SENSOR
Part Number Description Marking Code
KAC−12040−ABA−JD−BA Monochrome, Micro-PGA Package, Sealed Clear Cover Glass with AR
KAC−12040−ABA−JD−AE Monochrome, Micro-PGA Package, Sealed Clear Cover Glass with AR
KAC−12040−CBA−JD−BA Bayer (RGB) Color Filter Pattern, Micro-PGA Package, Sealed Clear Cover
KAC−12040−CBA−JD−AE Bayer (RGB) Color Filter Pattern, Micro-PGA Package, Sealed Clear Cover
1. Engineering Grade samples might not meet final production testing limits, especially for cosmetic defects such as clusters, but also possibly
column and row artifacts. Overall performance is representative of final production parts.
Coating (Both Sides), Standard Grade.
Coating (Both Sides), Engineering Grade.
Glass with AR Coating (Both Sides), Standard Grade.
Glass with AR Coating (Both Sides), Engineering Grade.
KAC−12040−ABA
Serial Number
KAC−12040−CBA
Serial Number
Table 3. ORDERING INFORMATION − EVALUATION SUPPORT
Part Number Description
KAC−12040−CB−A−GEVK Evaluation Hardware for KAC−12040 Image Sensor (Color). Includes Image Sensor. KAC−12040−AB−A−GEVK Evaluation Hardware for KAC−12040 Image Sensor (Monochrome). Includes Image Sensor. LENS−MOUNT−KIT−C−GEVK Lens Mount Kit that Supports C, CS, and F Mount Lenses. Includes IR Cut-filter for Color Imaging.
See the ON Semiconductor Device Nomenclature document (TND310/D) for a full description of the naming convention used for image sensors. For reference documentation, including information on evaluation kits, please visit our web site at
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.
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DEVICE DESCRIPTION
Architecture
KAC−12040
1D
0D
− 1D
0
− 0D
0
Clk1
Clk0
6
− 5D
0
5D
Clk7
Clk3
6
− 3D
0
3D
Clk5
LVDS Bank 3 LVDS Bank 5 LVDS Bank 7
Odd Row ADC, Analog Gain, Black-Sun Correction
88
6
B
G R
G
8
B G
4000 (H) y 3000 (V)
6
− 7D
0
7D
3.5 V
A
3.3 V
D
2.8 V
A
2.0 V
D
1.8 V
A
G R
Chip Clock (2 Pins) TRIGGER RESETN
4.7 mm Pixel
104
8
8
104
CSN SCLK
MOSI
6
Digital Gain/Offset, Noise Correction
LVDS Bank 0 LVDS Bank 1
(0, 0)
B
G R
G
8
88
B
G R
G
Timing Control, Sub-Sampling/Averaging
Even Row ADC, Analog Gain, Black-Sun Correction
MISO
ADC_Ref1
4.02 kW ±1% ADC_Ref2
Serial Peripheral Interface (SPI)
LVDS Bank 2 LVDS Bank 4 LVDS Bank 6
VSS 0 V
Clk2
6
− 2D
0
2D
6
Clk4
− 4D
0
4D
Figure 2. Block Diagram
Clk6
6
− 6D
0
6D
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Physical Orientation
272625242322212019181716151413121110987654321
KAC−12040
A B C D E
LVDS Bank 3 LVDS Bank 5 LVDS Bank 7
LVDS Bank 0 LVDS Bank 1
LVDS Bank 2 LVDS Bank 4 LVDS Bank 6
Notes:
1. The center of the pixel array is aligned to the physical package center.
2. The region under the sensor die is clear of pins enabling the use of a heat sink.
3. Non-symmetric mounting holes provide orientation and mounting precision.
4. Non-symmetric pins prevent incorrect placement in PCB.
5. Letter “F” indicator shows default readout direction relative to package pin 1.
Figure 3. Package Pin Orientation − Top X-Ray View
AA AB AC AD AE
272625242322212019181716151413121110987654321
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KAC−12040
Table 4. PRIMARY PIN DESCRIPTION
Pin Name Type Description
AB09 RESETN DI Sensor Reset (0 V = Reset State)
E07 CLK_In1 DI Sensor Input Clk_In1 (45−50 MHz)
D08 CLK_In2 DI Sensor Input Clk_In2 (Connect to Clk1) AB08 TRIGGER DI Trigger Input (Optional) AA05 SCLK DI SPI Master Clock AA08 MOSI DI SPI Master Output, Slave Input AA07 MISO DO SPI Master Input, Slave Output AA06 CSN DI SPI Chip Select (0 V = Selected) AA14 ADC_Ref1 AO AA15 ADC_Ref2 AO AB07 MSO DO Mechanical Shutter Output Sync (Optional) AB06 FLO DO Flash Output Sync (Optional)
E05 FEN DO Frame Enable Reference Output (Optional)
E06 LEN DO Line Enable Reference Output (Optional)
1. DI = Digital Input, DO = Digital Output, AO = Analog Output.
2. Tie unused DI pins to Ground, NC unused DO pins.
3. By default Clk_In2 should equal Clk_In1 and should be the same source clock.
4. The RESETN pin has a 62 kW internal pull-up resistor, so if left floating the chip will not be in reset mode.
5. The TRIGGER pin has an internal 100 kW pull down resistor. If left floating (and at default polarity) then the sensor state will not be affected by this pin (i.e. defaults to ‘not triggered’ mode if floated).
6. All of the DI and DO pins nominally operate at 0 V → 2.0 V and are associated with the VDD_DIG power supply.
4.02 kW ±1% Resistor between Ref1 & Ref2
4.02 kW ±1% Resistor between Ref1 & Ref2
Table 5. POWER PIN DESCRIPTION
Name Voltage Pins Description
VDD_LVDS 3.3 V D C04, C05, C23, C24, D04, D24, E04, E24, AA04, AA24,
AB04, AB24, AC04, AC05 AC23, AC24
VDD_DIG 2.0 V D C18, C19, D18, D19, E18, AA18, AB18, AB19, AC18, AC19,
C20, C21, C22, D20, D21, D22, D23, E20, E21, E22, AA20, AA21, AA22, AB20, AB21, AB22, AB23, AC20, AC21, AC22, AB15, E08
AVDD_HV 3.5 V A C11, D11, E11, AA11, AB11, AC11, C10, D10, E10, AA10,
AB10, AC10
Vref_P 2.8 V A C13, D13, E13, AA13, AB13, AC13 Pixel Supply 2
AVDD_LV 1.8 V A C17, D16, D17, E17, AA17, AB16, AB17, AC17 Analog Low Voltage Supply
Vpixel_low 0 V E09 Pixel Supply 3. Combine with VSS for
VSS 0 V C12, C14, D12, D14, E12, AA12, AB12, AB14, AC12, AC14,
E15, D15, AA09, A02, A14, A26, B14, C03, C06, C25, D03, D25, E03, E19, E23, E25, AA03, AA19, AA23, AA25, AB25, AC03, AC06, AC25, AD14, AE02, AE14, AE26
No Connect NA A01, AC09, E14, E16, C09, D09, D05, D06, D07, AA16,
AB05
LVDS Output Supply
Digital Core Supply
Pixel Supply 1
normal operation. Can be pulsed for Extended Dynamic Range Operation.
Sensor Ground Reference
Unused and test-only pins. These pins must be floated.
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Table 6. L VDS PIN DESCRIPTION
KAC−12040
Pin Name Description
E01
1DCLK+ E02 1DCLK− D01 1DATA0+ D02 1DATA0− C01 1DATA1+ C02 1DATA1− B01 1DATA2+ B02 1DATA2− A03 1DATA3+ B03 1DATA3− A04 1DATA4+ B04 1DATA4− A05 1DATA5+ B05 1DATA5− A06 1DATA6+ B06 1DATA6−
Pin Name Description
0DCLK+
AA01 AA02 0DCLK− AB01 0DATA0+ AB02 0DATA0− AC01 0DATA1+ AC02 0DATA1− AD01 0DATA2+ AD02 0DATA2− AE03 0DATA3+ AD03 0DATA3− AE04 0DATA4+ AD04 0DATA4− AE05 0DATA5+ AD05 0DATA5− AE06 0DATA6+ AD06 0DATA6−
Bank 1
LVDS Clock
Bank 1
LVDS Data
Bank 0
LVDS Clock
Bank 0
LVDS Data
Pin Name Description
C07
3DCLK+ C08 3DCLK− A07 3DATA0+ B07 3DATA0− A08 3DATA1+ B08 3DATA1− A09 3DATA2+ B09 3DATA2− A10 3DATA3+ B10 3DATA3− A11 3DATA4+ B11 3DATA4− A12 3DATA5+ B12 3DATA5− A13 3DATA6+ B13 3DATA6−
Pin Name Description
2DCLK+
AC07 AC08 2DCLK− AE07 2DATA0+ AD07 2DATA0− AE08 2DATA1+ AD08 2DATA1− AE09 2DATA2+ AD09 2DATA2− AE10 2DATA3+ AD10 2DATA3− AE11 2DATA4+ AD11 2DATA4− AE12 2DATA5+ AD12 2DATA5− AE13 2DATA6+ AD13 2DATA6−
Bank 3
LVDS Clock
Bank 3
LVDS Data
Bank 2
LVDS Clock
Bank 2
LVDS Data
Pin Name Description
C15
5DCLK+ C16 5DCLK− A15 5DATA0+ B15 5DATA0− A16 5DATA1+ B16 5DATA1− A17 5DATA2+ B17 5DATA2− A18 5DATA3+ B18 5DATA3− A19 5DATA4+ B19 5DATA4− A20 5DATA5+ B20 5DATA5− A21 5DATA6+ B21 5DATA6−
Pin Name Description
4DCLK+
AC15 AC16 4DCLK− AE15 4DATA0+ AD15 4DATA0− AE16 4DATA1+ AD16 4DATA1− AE17 4DATA2+ AD17 4DATA2− AE18 4DATA3+ AD18 4DATA3− AE19 4DATA4+ AD19 4DATA4− AE20 4DATA5+ AD20 4DATA5− AE21 4DATA6+ AD21 4DATA6−
Bank 5
LVDS Clock
Bank 5
LVDS Data
Bank 4
LVDS Clock
Bank 4
LVDS Data
Pin Name Description
A22
7DCLK+ B22 7DCLK− A23 7DATA0+ B23 7DATA0− A24 7DATA1+ B24 7DATA1− A25 7DATA2+ B25 7DATA2− B27 7DATA3+ B26 7DATA3− C27 7DATA4+ C26 7DATA4− D27 7DATA5+ D26 7DATA5− E27 7DATA6+ E26 7DATA6−
Pin Name Description
6DCLK+
AE22 AD22 6DCLK− AE23 6DATA0+ AD23 6DATA0− AE24 6DATA1+ AD24 6DATA1− AE25 6DATA2+ AD25 6DATA2− AD26 6DATA3+ AD27 6DATA3− AC26 6DATA4+ AC27 6DATA4− AB26 6DATA5+ AB27 6DATA5− AA26 6DATA6+ AA27 6DATA6−
Bank 7
LVDS Clock
Bank 7
LVDS Data
Bank 6
LVDS Clock
Bank 6
LVDS Data
1. All LVDS Data and Clock lines must be routed with 100 W differential transmission line traces.
2. All the traces for a single LVDS Bank should be the same physical length to minimize skew between the clock and data lines.
3. In 2 Bank mode, only LVDS banks 0 and 1 are active.
4. In 4 Bank mode, only LVDS bank 0, 1, 2, and 3 are active.
5. Float the pins of unused LVDS Banks to conserve power.
6. Unused pins in active banks (due to ADC bit depth < 14) are automatically tri-stated to save power, but these can also be floated.
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KAC−12040
IMAGING PERFORMANCE
Table 7. TYPICAL OPERATIONAL CONDITIONS
(Unless otherwise noted, the Imaging Performance Specifications are measured using the following conditions.)
Description
Light Source Continuous Red, Green and Blue LED Illumination 1 Temperature Measured Die Temperature: 40°C and 27°C Integration Time 16.6 ms (1400d LL, Register 0201h) Readout Mode Dual-Scan, Global Shutter, 320 MHz, PLL2 Clamps Column/Row Noise Corrections Active, Frame Black Level Clamp Active ADC Bit Depth 10 bit Analog Gain Unity Gain or Referred Back to Unit Gain
1. For monochrome sensor, only green LED used.
T able 8. KAC−12040−ABA CONFIGURATION (MONOCHROME)
Wavelength
Description Symbol
Peak Quantum Efficiency
Green NIR1 NIR2
Responsivity 84
Responsivity 7.0
QE
MAX
(nm)
550 850 900
Condition Notes
Temperature
Min. Nom. Max. Unit
53 15 10
% Design 27
ke
Lux @ s
V
Lux @ s
*
Sampling
Plan
Design 27 20
Design 27 21
Tested at
(5C)
Test
T able 9. KAC−12040−CBA CONFIGURATION (BAYER RGB)
Wavelength
Description Symbol
Peak Quantum Efficiency
Green NIR1 NIR2
Responsivity Blue
Responsivity Blue
QE
MAX
(nm)
470 540 620 850 900
Green
Red
Green
Red
Min. Nom. Max. Unit
40 47 45 15 10
17 35 38
1.4
2.9
3.2
Sampling
Plan
% Design 27
*
ke
Lux @ s
V
Lux @ s
Design 27 20
Design 27 21
Temperature
Tested at
(5C)
Test
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KAC−12040
Table 10. PERFORMANCE SPECIFICATIONS ALL CONFIGURATIONS
Description Symbol Min. Nom. Max. Unit
Photodiode Charge Capacity
PNe 16 ke
Sampling
Plan
Tested at
(5C)
Die 27, 40 16
Temperature
Test Notes
Read Noise ne−T
Total Pixelized Noise
Dynamic Range DR
Column Noise C
Row Noise R
Dark Field Local
N
N
DSNU_flr
Non-Uniformity Floor Bright Field Global
PRNU_1 1.5 % rms Die 27, 40 2 2
3.7 RS
25.5 GS
4.5 RS
28.3 GS 73 RS
56 GS
0.6 RS
3.0 GS
1.0 RS
5.0 GS
3.0 RS
21 GS
e− rms Die 27 8 1
e− rms Die 27 19 1
dB Die 27 1, 4
e− rms Die 27 9 1, 6
e− rms Die 27 10 1, 7
e− rms Die 27, 40 1 1, 5
Photoresponse Non-Uniformity
Bright Field Global Peak to
PRNU_2 6.5 % pp Die 27, 40 3 2 Peak Photoresponse Non-Uniformity
Maximum Photoresponse
NL 6.3 % Die 27, 40 11 3
Non-Linearity Maximum Gain Difference
DG
0.3 % Die 27, 40 12 8
between Outputs Photodiode Dark Current I Storage Node Dark Current I
PD VD
Image Lag Lag 1.3 10 Black-Sun Anti-Blooming X
AB
4.6 70 e/p/s Die 40 13 9
1,200 5,000 e/p/s Die 40 14 5
12
> 10,000
W/cm
xllumSat
Design 27, 40 15
2
Design 27 7 14
Parasitic Light Sensitivity PLS 730 Design 27 6 10 Dual-Video WDR
Pulsed Pixel WDR
140 RS
120 GS
dB Design 27 1, 11,
100 dB Design 27 12, 13
(GS Only)
1. RS = Rolling Shutter Operation Mode, GS = Global Shutter Operation Mode.
2. Measured per color, worst of all colors reported.
3. Value is over the range of 10% to 90% of photodiode saturation, Green response used.
4. Uses 20LOG (PNe / ne
T).
5. Photodiode dark current made negligible.
6. Column Noise Correction active.
7. Row Noise Correction active.
8. Measured at ~70% illumination.
9. Storage node dark current made negligible.
10.GSE (Global Shutter Efficiency) = 1 −1 / PLS.
11.Min vs Max integration time at 30 fps.
12.WDR measures expanded exposure latitude from linear mode DR.
13.Min/Max responsivity in a 30 fps image.
14.Saturation Illumination referenced to a 3 line time integration.
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TYPICAL PERFORMANCE CURVES
KAC−12040
Figure 4. Monochrome QE (with Microlens)
Figure 5. Bayer QE (with Microlens)
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KAC−12040
Angular Quantum Efficiency
For the curves marked “Horizontal”, the incident light angle is varied along the wider array dimension. For the curves marked “Vertical”, the incident light angle is varied along the shorter array dimension.
Figure 6. Monochrome Relative Angular QE (with Microlens)
Figure 7. Bayer Relative Angular QE (with Microlens)
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Dark Current vs. Temperature
NOTE: “Dbl” denotes an approximate doubling temperature for the dark current for the displayed temperature range.
KAC−12040
Figure 8. Dark Current vs. Temperature
Power vs. Frame Rate
The most effective method to use the maximum PLL2 speed (313 320 MHz) and control frame rate with minimum Power and maximum image quality is to adjust Vertical Blanking. (register 01F1h). Unnecessary chip
operations are suspended during Vertical Blanking conserving significant power consumption and also minimizing the image storage time on the storage node when in Global Shutter Operation.
NOTE: The LVDS clock is ½ the PLL2 clock speed.
Figure 9. Power vs. Frame Rate, 10 bit Mode
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KAC−12040
Power and Frame Rate vs. ADC Bit Depth
Increasing the ADC bit depth impacts the frame rate by changing the ADC conversion time. The following figure
shows the power and Frame rate range for several typical cases.
Figure 10. ADC Bit Depth Impact on Frame Rate and Power
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KAC−12040
DEFECT DEFINITIONS
Table 11. OPERATION CONDITIONS FOR DEFECT TESTING
Description Condition Notes
Operational Mode 10 bit ADC, 8 LVDS Outputs, Global Shutter and Rolling Shutter Modes,
Pixels per Line 4,000 Lines per Frame 3,000 Line Time Frame Time 13.9 ms Photodiode Integration Time 33 ms Storage Readout Time 13.9 ms Temperature 40°C and 29°C Light Source Continuous Red, Green and Blue LED Illumination 1 Operation Nominal Operating Voltages and Timing, PLL1 = 320 MHz, Wafer Test
1. For monochrome sensor, only the green LED is used.
Table 12. DEFECT DEFINITIONS FOR TESTING
Description Definition Limit Test Notes
Dark Field Defective Pixel 30°C
Bright Field Defective Pixel Defect ≥ ±12% from Local Mean 120 5 2, 5 Cluster Defect A group of 2 to 10 contiguous defective pixels, but
Column/Row Major Defect A group of more than 10 contiguous defective pixels
Dark Field Faint Column/Row Defect RS: 3 dn Threshold
Bright Field Faint Column/Row Defect RS: 12 dn Threshold
1. RS = Rolling Shutter, GS = Global Shutter.
2. For the color devices, all bright defects are defined within a single color plane, each color plane is tested.
3. Cluster defects are separated by no less than two good pixels in any direction.
4. Rolling Shutter Dark Field points are dominated by photodiode integration time, Global Shutter Dark Field defects are dominated by the
readout time.
5. The net sum of all bright and dark field pixel defects in rolling and global shutter are combined and then compared to the test limit.
Dual-Scan, Black Level Clamp ON, Column/Row Noise Corrections ON, 1× Analog Gain, 1× Digital Gain
8.7 ms
RS: Defect 20 dn GS: Defect 180 dn
no more than 3 adjacent defects horizontally.
along a single column or row.
GS: 10 dn Threshold
GS: 18 dn Threshold
40°C RS: Defect 30 dn GS: Defect 240 dn
120 4 1, 4, 5
22 3
0
0 17 1
0 18 1
Defect Map
The defect map supplied with each sensor is based upon testing at an ambient (29°C) temperature. All defective
pixels are reference to pixel (0, 0) in the defect maps. See Figure 11 for the location of pixel (0, 0).
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KAC−12040
TEST DEFINITIONS
Test Regions of Interest
Image Area ROI: Pixel (0, 0) to Pixel (4015, 3015) Active Area ROI: Pixel (8, 8) to Pixel (3999, 2999) Center ROI: Pixel (1958, 1458) to Pixel (2057, 1557)
Only the Active Area ROI pixels are used for performance and defect tests.
B
G R
G
4000 (H) y 3000 (V)
4.7 mm Pixel
0,0
8,8
104
8
88
8
8
88
B
G R
G
8
104
B
G R
G
Figure 11. Regions of Interest
Test Descriptions
1) Dark Field Local Non-Uniformity Floor (DSNU_flr)
This test is performed under dark field conditions. A 4 frame average image is collected. This image is partitioned into 300 sub-regions of interest, each of which is 200 by 200 pixels in size. For each sub-region the standard deviation of all its pixels is calculated. The dark field local non-uniformity is the largest standard deviation found from all the sub regions of interest. Units: e
rms (electrons rms).
2) Bright Field Global Photoresponse Non-Uniformity (PRNU_1)
The sensor illuminated to 70% of saturation (~700 dn). In this condition a 4 frame average image is collected. From this 4 frame average image a 4 frame average dark image is subtracted. The Active Area Standard Deviation is the standard deviation of the resultant image and the Active Area Signal is the average of the resultant image.
PRNU_1 + 100 @
Units : % rms
ǒ
Active Area Signal
Ǔ
Active Area Standard Deviation
3) Bright Field Global Peak to Peak Non-Uniformity (PRNU_2)
This test is performed with the sensor uniformly illuminated to 70% of saturation (~700 dn), a 4 frame average image is collected and a 4 frame averaged dark image is subtracted. The resultant image is partitioned into 300 sub regions of interest, each of which is 200 by 200 pixels in size. The average signal level of each sub regions of interest (sub-ROI) is calculated.
The highest sub-ROI average (Maximum Signal) and the lowest sub-ROI average (Minimum Signal) are then used in the following formula to calculate PRNU_2.
PRNU_2 + 100 @
Units : % pp
ǒ
Active Area Signal
Ǔ
Max. Signal * Min. Signal
4) Dark Field Defect Test
This test is performed under dark field conditions. The sensor is partitioned into 300 sub regions of interest, each of which is 128 by 128 pixels in size. In each region of interest, the median value of all pixels is found. For each region of interest, a pixel is marked defective if it is greater than or equal to the median value of that region of interest plus the defect threshold specified in the Defect Definition Table section.
5) Bright Field Defect Test
This test is performed with the imager illuminated to a level such that the output is at approximately 700 dn. The average signal level of all active pixels is found. The bright and dark thresholds are set as:
Dark Defect Threshold = Active Area Signal Threshold Bright Defect Threshold = Active Area Signal Threshold
The sensor is then partitioned into 300 sub regions of interest, each of which is 128 by 128 pixels in size. In each region of interest, the average value of all pixels is found. For each region of interest, a pixel is marked defective if it is greater than or equal to the median value of that region of interest plus the bright threshold specified or if it is less than
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KAC−12040
or equal to the median value of that region of interest minus the dark threshold specified.
Example for bright field defective pixels:
Average value of all active pixels is found to be 700 dn
Lower defect threshold: 700 dn 12% = 84 dn
A specific 128 × 128 ROI is selected:
Median of this region of interest is found to be
690 dn.
Any pixel in this region of interest that is
(690 − 84 dn) in intensity will be marked
defective.
Any pixel in this region of interest that is
(690 − 84 dn) in intensity will be marked
defective.
All remaining 299 sub regions of interest are analyzed
for defective pixels in the same manner.
6) Parasitic Light Sensitivity (PLS)
Parasitic Light Sensitivity is the ratio of the light sensitivity of the photodiode to the light sensitivity of the storage node in Global Shutter. There is no equivalent distortion in Rolling Shutter. A low PLS value can provide distortion of the image on the storage node by the scene during readout.
PLS +
GSE (Global Shutter Efficiency) is a related unit.
Detailed Method: Photodiode Responsivity:
The sensor is set in global shutter serial mode (integration time not overlapping readout) and the FLO signal is used to control a 550 nm normal incident (or large f# focused) illumination source so that the sensor is illuminated only during photodiode integration time (not illuminated during readout time). The integration time is not critical but should be large enough to create a measurable mean during this time. A 16 frame-average illuminated photodiode image is recorded. A 16 frame-average dark frame using the same sensor settings is captured and is subtracted from the illuminated image.
Detailed Method: Storage Node Responsivity:
The sensor is set to a special characterization mode where the PD signal is discarded and does not impact the storage node. A long total frame time (storage node exposure time) is used to increase the storage node signal. A 16 frame-average dark frame is captured. The sensor is illuminated by the same 550 nm incident light source used for the photodiode responsivity. A 16 frame-average illuminated photodiode image is recorded; the dark frame image is subtracted from this. The integration time is not critical but should be set such that a significant response is detected, typically several orders of magnitude greater than the photodiode integration time.
Photodiode Responsivity
Storage Node Responsivity
GSE +ǒ1 *
1
PLS
(UnitlessRatio)
Ǔ
%
7) Black-Sun Anti-Blooming
A typical CMOS image sensor has a light response profile that goes from 0 dn to saturation (1023 dn for KAC−12040 in 10 bit ADC mode) and, with enough light, back to 0 dn. The sensor reaching 0 dn at very bright illumination is often called the “Black-sun” artifact and is undesirable. Black-sun artifact is typically the dominant form of anti-blooming image distortion. For the KAC−12040 the Black-sun artifact threshold is measured at the onset of saturation distortion, not at the point where the output goes to 0 dn. To first order the onset of black-sun artifact for the KAC−12040 is not proportional to the integration time or readout time.
The sensor is placed in the dark at unity gain and illuminated with a 532 nm laser with the intensity of about 26 W/cm
2
at the center of the sensor. The laser is strong enough to make the center of the laser spot below 1020 dn without any ND filters. ND filters are added to adjust the laser intensity until the signal in the region at the center of the spot increases to > 1020 dn.
This illumination intensity at this ND filter is recorded
2
(W/cm
) as the Black-Sun Anti-blooming.
The ‘xIlumSat’ unit is calculated using and integration
time of 100 msec.
Exposing the sensor to very strong illumination for extended periods of time will permanently alter the sensor performance in that localized region.
8) Read Noise
This test is performed with no illumination and one line of integration time. The read noise is defined as one standard deviation of the frequency histogram containing the values of all pixels after the excessively deviant pixels (± three standard deviations) are removed.
9) Column Noise
After all rows are averaged together. Shading (low frequency change wrt column address) is removed. A frequency histogram is constructed of the resulting column values. The column noise is the standard deviation of the frequency histogram of the column values.
10) Row Noise
All columns are averaged together. Shading (low frequency change wrt row address) is removed. A frequency histogram is constructed of the resulting row values. The row noise is the standard deviation of the frequency histogram of the row values.
11) Maximum Photoresponse Non-Linearity
The photoresponse non-linearity is defined as the deviation from the best fit of the sensor response using 70% of saturation and zero signal as the reference points. The different signal levels are determined by varying the integration time. The sensor saturation level is (1023-dark offset). The dark offset is subtracted from the image for the following M
AVG
and L
AVG
.
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KAC−12040
The integration time is varied until the integration time
required to reach the 70% saturation is determined. M
= the active array mean at the 70% saturation
AVG
integration time.
The integration is set to 1/14 (5% exposure point).
= meant at the 5% exposure point.
L
AVG
PRNL (@ 5% saturation) = ((L
AVG/MAVG
100
12) Maximum Gain Difference between Outputs
The sensor contains two ADC and four channels of analog data in its highest frame rate configuration. The sensor is factory calibrated to reduce the gain differences between the channels. The gain variations are manifest as a row oriented pattern where every other row uses a different ADC. Using triple scan read out mode, an additional two analog channels are introduced resulting in a four row pattern. With one channel (‘Top Ping’) used as the reference, the residual gain difference is defined as:
Bottom Ping Row Average
ǒ
Top Ping Row Average
Top Pong Row Average
ǒ
Top Ping Row Average
Bottom Pong Row Average
ǒ
Top Ping Row Average
* 1Ǔ@ 100
* 1Ǔ@ 100
* 1Ǔ@ 100
13) Photodiode Dark Current
The photodiode dark current is measured in rolling shutter read out mode using 105 ms integration time and an analog gain = 8. The value is converted to electrons/pix/sec using the formula:
Photodiode Dark Current + Aver. Signal (DN) @
where ‘average signal (DN)’ is the average of all pixels in the sensor array, and ‘el-per-DN (gain=8)’ is measured on each sensor using the photon transfer method.
14) Storage Node Dark Current
The storage node dark current is measured in global shutter read out mode using a special timing mode to prevent the photodiode dark current from being transferred to the storage node. In global shutter mode, the integration time of the storage node is the time it takes to read out a frame. The sensor analog gain is set to 2:
Storage Node Dark Current + Aver. Signal (DN) @
where ‘average signal (DN)’ is the average of all pixels in the sensor array and ‘el-per-DN (gain=2)’ is measured on each sensor using the photon transfer method.
15) Lag
Lag is measured as the number of electrons left in the photodiode after readout when the sensor is illuminated at 70% of Photodiode Charge Capacity.
) (14/1) −1)
el−per−DN (gain=8)
0.105 seconds
el−per−DN
0.138 seconds
(gain=2)
Analog gain is set to 8. With no illumination a 64 average dark image is recorded (Dark_ref). The ‘el-per-DN’ is measured using the photon transfer method.
Illumination is adjusted blink every other frame such that the mean image output is 70% of the Photodiode Charge Capacity for even frames, and with no illumination for odd frames. A 64 frame average of Odd Dark Frames is recorded as Dark_Lag.
Lag +(Dark_Lag * Dark_Ref)@ el−per−DN Units : Electrons rms
16) Photodiode Charge Capacity
The sensor analog gain is reduced to < 1 to prevent ADC clipping at 1023 dn. The ‘el-per-DN’ is measured using the photon transfer method. The sensor is illuminated at a light level ~1.5x the illumination at which the pixel output no longer linearly changes with illumination level. The Photodiode Charge Capacity is equal to the average signal (DN) el-per-DN. Units: electrons rms.
17) Dark Field Faint Column/Row Defect
A 4 frame average, no illumination image is acquired at one line time of integration. Major defective pixels are removed (> 5 Sigma). All columns or rows are averaged together. The average of the local ROI of 128 columns or rows about the column/row being tested is determined. Any columns/rows greater than the local average by more than the threshold are identified.
18) Bright Field Faint Column/Row Defect
A 4 frame average, 70% illumination image is acquired at one line time of integration. Major defective pixels are removed (> 5 Sigma). All columns or rows are averaged together. The average of the local ROI of 128 columns or rows about the column/row being tested is determined. Any columns/rows greater than the local average by more than the threshold are identified.
19) Total Pixelized Noise
This test is performed with no illumination and one line of integration time. A single image is captured including both T emporal a n d F i x e d P attern Noise (FPN). A spatial low pass filter is applied to remove shading and deviant pixels (± three standard deviations) are removed. The Total Pixelized Noise is defined as one standard deviation of the frequency histogram.
20) Responsivity ke
/lux-sec
This number is calculated by integrating the multiplication of the sensor QE by the human photopic response assuming a 3200K light source with a QT100 IR filter. This is a sharp 650 nm cutoff filter. If the IR filter is removed a higher response value will result.
21) Responsivity V/lux-sec
Voltage levels are not output from the sensor. This metric uses the pixel output in volts at the ADC input for 1x Analog Gain.
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OPERATION
KAC−12040
This section is a brief discussion of the most common features and functions assuming default conditions. See the KAC−12040 User Guide for a full explanation of the sensor operation modes, options, and registers.
Register Address
The last bit of any register address is a Read/Write bit. Most references in this document refer to the Write address.
<2µ s
Slave Integration Mode
TRIG_WAIT
TRIGGER Active Edge
End of
acquisition
EXT_INT
TRIGGER Inactive Edge
<50µ s
<2µ s
<2µ s
End of acquisition AND
IDLE mode AND
No TRIGGER
All SPI reads are to an even address, all SPI writes are to an odd address.
Sensor States
Figure 12 shows the sensor states, see the KAC−12040
User Guide for detailed explanation of the States.
RESET
<35µ s
STANDBY
CONFIG
IDLE
RUNNING
150µ s
WAKE−UP
(50 ms)
RUNNING mode OR
TRIGGER pin
<50µ s
RESETN low or
reset Reg 4060h
READOUT
Figure 12. Sensor State Diagram
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KAC−12040
Encoded Syncs
To facilitate system acquisition synchronization the KAC−12040 places synchronization words (SW) at the beginning and at the end of each output row as indicated in
V Blanking Period
SOF
DataSOL
V Blanking Period
Line Length (LL)
Figure 13. Encoded Frame Syncs
Line Time
This Datasheet presumes the recommended startup script that is defined in the KAC−12040 User Guide has been applied. The KAC−12040 defaults to Dual-Scan mode. In this mode the LVDS data readout overlaps the pixel readout and ADC conversion time. The Pixel and ADC conversion time are fixed (for 10 bit operation) and total ~8.66 ms. The LVDS time will be dependent on the PLL2 frequency selected. If the PLL2 < 313 MHz, then the LVDS data readout will dominate the row time. For PLL2 > 313 MHz, the Pixel + ADC will set the minimum Line Time. The Line Time is not impacted by the selection of Rolling Shutter or Global Shutter mode.
the following Figure 13. This is performed for each of the 8 LVDS output banks providing frame, line, and output synchronization. See the KAC−12040 User Guide for additional detail on LVDS and Encoded Sync output.
EOL
H Blanking Period
EOF
The KAC−12040 architecture always outputs two rows at once, one row from the top ADC, and one from the bottom ADC. Each ADC then divides up the pixel into 1 → 4 parallel pixel output LVDS Banks. The default is 4 output banks per ADC for a total of 8 parallel pixel outputs to minimize the LVDS data output time. Since the sensor always outputs 2 rows at a time the timing and registers are based on a Line Time (LT) or Line Length (LL) where one LT = the time to readout 2 rows in parallel (one even row and one odd row).
Figure 14. Default Line Time (Dual-Scan) with PLL2 = 320 MHz
Pixel n+1 10 bit ADC n+1
4.30 ms 4.36 ms
8 Bank LVDS Output n
LVDS Clock = 160 MHz
8.44 ms
Line n Time = Line Length Register (0201h) = 1400
8.75 ms
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Line
Wait
Page 19
KAC−12040
8.34 ms by Default (952 Line Times)
Frame Time
The frame time is defined in units of Line Time. 1 Line Time unit = 2 output rows. To first-order the frame rate is not directly impacted by selection of Global Shutter, Rolling Shutter, Dual-Scan, or Tri-Scan.
The Frame Time is made up of three phases:
1. Integration Phase
2. Readout Phase
3. Frame Wait Phase (Vertical Blanking, V
Integration Phase Frame m Integration Phase Frame m+1 Integration Phase Frame m+2
Readout Phase Frame m Readout Phase Frame m+1
Single Frame of Video Overhead
Figure 15. Default Frame Time Configuration (Frame A)
13.80 ms by Default
Video Frame Time = Readout + Wait
BLANK
)
By default the Integration Phase overlaps the Readout and Frame Wait Phases. If the Integration Phase is larger than the Readout + Fram e Wait time, then the Integration Phase will determine the video frame rate. Otherwise the frame rate will be set by the Readout + Frame Wait time. In other words, if the programmed integration time is larger than the minimum readout time (and vertical blanking) then extra vertical blanking will be added and the frame rate will slow to accommodate the requested integration time.
Frame
Wait
13.79 ms by Default (1576 Line Times)
If the Integration Phase is less than the Readout Phase then the start of integration is automatically delayed to minimize the storage time and dark current.
Frame
Wait
~0.01 ms
(1 Line Time)
Integration Phase Frame m
If the Readout Phase (+ V
Figure 16. Frame Time with Extended Integration Time
BLANKING
Integration Phase Frame m+1
Readout Phase Frame m
Video Frame Time = Integration Time
) is less than the Integration Phase, then the readout occurs as soon the integration is complete to minimize the storage time and dark current.
Integration Phase Frame m+2
Frame
Wait
Readout Phase Frame m+1
Frame
Wait
See the KAC−12040 User Guide for detailed calculation
of the Integration Phase, Readout Phase, and Frame Wait.
To first-order the Readout Phase is equal to the number o f
rows row_time.
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KAC−12040
Integration of Next Frame Overlaps
Global Shutter Readout
Global Shutter readout provides the maximum precision for freezing scene motion. Any motion artifacts will be 100% defined by an ideal integration time edge. Every pixel in the array starts and stops integration at the same time.
Figure 17 illustrates a Global Shutter Frame readout assuming the recommended Start-up Script defined in the KAC−12040 User Guide (8 LVDS banks, Dual-Scan,
8.75 ms line time). The Frame W ait Phase is not shown due to its small default size (1 LL) and for clarity.
Global Shutter readout mode is selected using Bits [1:0]
of Register 01D1h.
Images can be initiated by setting and holding the TRIGGER input pin or by placing the sensor into RUNNING mode by writing 03d to register 4019h. If the TRIGGER input pin is true when at the start of the integration time for the next frame then the sensor will complete an additional frame integration and readout. In the case shown in Figure 17 two frames will be output.
Integration Time = 8.33 ms
Row Address Axis
Time/Col Address Axis
Trigger Pin: True = 2.0 V
Figure 17. Illustration of Frame Time for Global Shutter Readout
Readout of Previous Frame
Frame Readout = 13.80 ms
Effective Frame Time (Video) = Readout Time
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KAC−12040
Integration of Next Frame Overlaps
Rolling Shutter Readout
The KAC−12040 high speed Rolling Shutter readout provides the maximum dynamic range while still providing excellent motion capture. In Rolling Shutter the readout more closely matches a film camera shutter. Each row of the image receives the same integration time, but each row starts and ends at a di fferent time as the shutter travels from the top
of the array to the bottom. In the Figure 18 frame time illustration this ‘moving shutter’ displays as a sloped edge for the blue pixel array region, just as the readout edge is sloped.
The Figure 18 illustration shows a 2 frame output
sequence using the external TRIGGER pin.
Integration Time = 8.33 ms
Row Address Axis
Time/Col Address Axis
Trigger Pin: True = 2.0 V
Figure 18. Illustration of Frame Time for Rolling Shutter Readout
Readout of Previous Frame
Frame Readout = 13.80 ms
Effective Frame Time (Video) = Readout Time
Rolling Readout mode can be selected using Bits [1:0] of Register 01D1h.
Images can be initiated by setting and holding the TRIGGER input pin or by placing the sensor into
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RUNNING mode by writing 03d to register 4019h. If the TRIGGER input pin is True when at the start of the integration time for the next frame then the sensor will complete an additional frame integration and readout.
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8 BANK LVDS DATA READOUT
KAC−12040
LVDS Banks
The KAC−12040 provides 8 parallel pixel banks, each consisting of 8 LVDS differential pairs (7 data pairs + 1clock pair). This allows the output of 8 pixels per LVDS clock
Bank 3 Bank 5 Bank 7
Pixel Array
2 Bank Mode
Bank 0 Bank 1
Bank 2 Bank 4 Bank 6
Bank 3 Bank 5 Bank 7
Bank 0 Bank 1
Bank 2 Bank 4 Bank 6
Figure 19. LVDS Bank Labeling
The number of output banks used is independent of the ADC bit depth chosen. By default the KAC−12040 uses all 8 output banks for maximum frame rate. If technical restrictions prevent the use of 8 LVDS banks, the sensor can be programmed to use 4 or 2 banks, however this can result in reduced frame rate and reduction of image quality. It is recommended that 8 banks be used when possible. Only the 8 bank option is discussed in detail in this specification, see the KAC−12040 User Guide for additional detail on 4 and 2 bank mode.
period. All 7 data pairs, of each bank, are used only in 14 bit operation mode. By default only 5 data pairs are used for 10 bit mode (D4 → D0). The unused pairs are held in low-power high impedance mode.
Bank 3 Bank 5 Bank 7
Pixel Array
4 Bank Mode
Bank 0 Bank 1
Bank 2 Bank 4 Bank 6
Pixel Array
8 Bank Mode
In order to minimize the L VDS clock rate (and power) for a given data rate the pixels are output in DDR (Double Data Rate) where the MSB is always sent first (on rising edge) and the LSB second (falling edge) This is not programmable.
Ports per LVDS Bank
The MSB comes out first on the falling edge, followed by the LSB on the net rising edge.
Table 13. NUMBER OF LVDS PAIRS (PORTS) USED VS. BIT DEPTH
Bit Depth Edge of DATA CLK Data0 Data1 Data2 Data3 Data4 Data5 Data6
14 bits
12 bits
10 bits
8 bits
Falling (MSB Nibble) D7 D8 D9 D10 D11 D12 D13
Rising (LSB Nibble) D0 D1 D2 D3 D4 D5 D6
Falling (MSB Nibble) D6 D7 D8 D9 D10 D11 HiZ
Rising (LSB Nibble) D0 D1 D2 D3 D4 D5 HiZ
Falling (MSB Nibble) D5 D6 D7 D8 D9 HiZ HiZ
Rising (LSB Nibble) D0 D1 D2 D3 D4 HiZ HiZ
Falling (MSB Nibble) D4 D5 D6 D7 HiZ HiZ HiZ
Rising (LSB Nibble) D0 D1 D2 D3 HiZ HiZ HiZ
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KAC−12040
8 Bank Pixel Order
The KAC−12040 always processes two rows at a time. Even row decodes are sent to the bottom ADC and LVDS output banks (0, 2, 4, 6). Odd rows are sent to the top ADC and LVDS banks (1, 3, 5, 7). The ROI must be (and is internally forced to) an even size and always starting on an even row decode.
The rows are read out progressively left to right (small column address to large). Eight pixels are sent out of the chip at once, one pixel per LVDS bank per LVDS clock cycle.
Pixel Readout order:
1. Two rows are selected, the even row is sent to the bottom ADC and the odd row to the top ADC.
2. Each ADC converts its row of pixel data at once and stores the result in a line buffer.
3. At default settings there are 4 output LVDS banks for each ADC.
Bank 3 Bank 5 Bank 7
4. Each LVDS Bank outputs one pixel per clock cycle, so 4 pixels of each row are output each full LVDS clock cycle, two rows in parallel for 8 pixels per clock cycle total.
5. The pixels are sent out from left to right (low column number to high column number). So the first 4 pixels are sent out on clock cycle 1, and the next 4 pixels to the right are sent out on clock cycle 2.
6. To conserve the number of wires per port, the 10 bits per pixel are sent out DDR (Dual Data Rate) over 5 ports. On the falling edge the upper 5 MSB bits are sent out, and on the rising edge the lower 5 bits LSB are sent out. Completing one full LVDS clock cycle and one set of eight pixels.
7
Row 2n +1 Row 2n
001122334455667
Bank 0 Bank 1
Bank 2 Bank 4 Bank 6
First CLK−DATA Pulse
Figure 20. Pixel Readout Order Diagram
Table 14. PIXEL READOUT ORDER TABLE
LVDS Bank Row Pixel Number
Bank 0 2n (Even) 0 4 8 12 16 Bank 2 2n (Even) 1 5 9 13 17 Bank 4 2n (Even) 2 6 10 14 18
Bank 6 2n (Even) 3 7 11 15 19 Bank 1 2n+1 (Odd) 0 4 8 12 16 Bank 3 2n+1 (Odd) 1 5 9 13 17 Bank 5 2n+1 (Odd) 2 6 10 14 18 Bank 7 2n+1 (Odd) 3 7 11 15 19
LVDS Clock Cycle 1 2 3 4 5
Second CLK−DATA Pulse
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KAC−12040
De-Serializer Settings
Figure 21 shows the data stream of one LVDS bank for
10 bit resolution.
Data serialization is fixed at 2 cycle DDR for all bit depths. Data output order is MSB first on the falling edge, and LSB following on the rising edge.
Four pixel values per synchronization word are embedded into the video stream per LVDS bank.
Dclk0
D0
Data0 Data1 Data2 Data3 Data4
D5
D0
SW1
D5
D0
D5
D1
D6
D1
D6
D2
D7
D2
D7
D3
D8
D3
D8
D4
D9
D4
D9
SW2 SW3 SW4 P0 P1 P2 P3 SW1 SW2 SW3 SW4PN−1 PN
D5 D6
D6 D7
D7 D8
D8 D9
D9
MSB LSB MSB
MSB LSB MSB
D0
D5
D0
D5
D1
D6
D1
D6
D2
D7
D2
D7
D3
D8
D3
D8
D4
D9
D4
D9
LSB MSB
LSB MSB
D0
D5
D0
D5
D1
D6
D1
D6
D2
D7
D2
D7
D3
D8
D3
D8
D4
D9
D4
D9
LSB MSB
LSB MSB
D0
D5
D0
D5
D1
D6
D1
D6
D2
D7
D2
D7
D3
D8
D3
D8
D4
D9
D4
D9
LSB MSB
LSB MSB
D0
D5
D0
D5
D1
D6
D1
D6
D2
D7
D2
D7
D3
D8
D3
D8
D4
D9
D4
D9
LSB MSB
LSB MSB
D5
D0
D5
D1
D6
D1
D6
D2
D7
D2
D7 D8
D3
D8
D3 D4
D9
D4
D9
LSB MSB
LSB MSB
D0
D5
D0
D5
D1
D6
D1
D6
D2
D7
D2
D7
D3
D8
D3
D8
D4
D9
D4
D9
LSB MSB
LSB MSB
The SOL/SOF synchronization words are sent out of each LVDS bank before the first valid pixel data from that bank. Each bank outputs all 4 syncs of the SOF or SOL.
And each of the active LVDS banks each output all 4 sync codes for the EOL/EOF.
D0
D5
D0
D0 D1
D1 D2
D2 D3
D3 D4
D4
LSB
LSB
D5
D0
D5
D0
D6
D1
D6
D1
D7
D2
D7
D2
D8
D3
D8
D3
D9
D4
D9
D4
MSB LSB
MSB LSB
D5
D0
D5
D0
D6
D1
D6
D1
D7
D2
D7
D2
D8
D3
D8
D3
D9
D4
D9
D4
MSB LSB
MSB LSB
D0
D5 D6
D1
D6
D1
D7
D2
D7
D2 D3
D8
D3
D8 D9
D4
D9
D4
MSB LSB
MSB LSB
D5
D0
D5
D0
D6
D1
D6
D1
D7
D2
D7
D2
D8
D3
D8
D3
D9
D4
D9
D4
MSB LSB
MSB LSB
D5
D0
D5
D0
D6
D1
D6
D1
D7
D2
D7
D2
D8
D3
D8
D3
D9
D4
D9
D4
MSB LSB
MSB LSB
D5
D0
D5
D0
D6
D1
D6
D1
D7
D2
D7
D2
D8
D3
D8
D3
D9
D4
D9
D4
MSB LSB
MSB LSB
t
Synchronized Word on 10 bits Data on 10 bits
Figure 21. Data Stream of One LVDS Bank for 10 bits ADC Resolution
Synchronized Word on 10 bits
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REGISTER DEFINITION
Table 15. REGISTER DEFINITION
16 bit
Write Address (Hex)
0001 420d Any Frame A Definition Frame A ROI y1 0009 2176d Any Frame A Definition Frame A ROI h1
0011 80d Any Frame A Definition Frame A ROI x1 0019 3856d Any Frame A Definition Frame A ROI w1 0021 0d Any Frame A Definition Frame A sub-ROI y2 0029 0d Any Frame A Definition Frame A sub-ROI h2 0031 0d Any Frame A Definition Frame A sub-ROI x2 0039 0d Any Frame A Definition Frame A sub-ROI w2 0041 0d Any Frame A Definition Frame A sub-ROI y3 0049 0d Any Frame A Definition Frame A sub-ROI h3 0051 0d Any Frame A Definition Frame A sub-ROI x3 0059 0d Any Frame A Definition Frame A sub-ROI w3 0061 0d Any Frame A Definition Frame A sub-ROI y4 0069 0d Any Frame A Definition Frame A sub-ROI h4 0071 0d Any Frame A Definition Frame A sub-ROI x4 0079 0d Any Frame A Definition Frame A sub-ROI w4 0081 0033d Any Frame A Definition Frame A Decimation 0089 0d Any Frame A Definition Frame A Video Blanking 0091 800d Any Frame A Definition Frame A Integration Lines 0099 0d Any Frame A Definition Frame A Integration Clocks 00A1 10d Any Frame A Definition Frame A Black Level 00A9 001Fh Any Frame A Definition Frame A Gain 00E9 0d Any Frame B Definition Frame B ROI y1 00F1 3016d Any Frame B Definition Frame B ROI h1 00F9 0d Any Frame B Definition Frame B ROI x1 0101 4016d Any Frame B Definition Frame B ROI w1 0109 0d Any Frame B Definition Frame B sub-ROI y2
0111 0d Any Frame B Definition Frame B sub-ROI h2
0119 0d Any Frame B Definition Frame B sub-ROI x2 0121 0d Any Frame B Definition Frame B sub-ROI w2 0129 0d Any Frame B Definition Frame B sub-ROI y3 0131 0d Any Frame B Definition Frame B sub-ROI h3 0139 0d Any Frame B Definition Frame B sub-ROI x3 0141 0d Any Frame B Definition Frame B sub-ROI w3 0149 0d Any Frame B Definition Frame B sub-ROI y4 0151 0d Any Frame B Definition Frame B sub-ROI h4 0159 0d Any Frame B Definition Frame B sub-ROI x4 0161 0d Any Frame B Definition Frame B sub-ROI w4 0169 033h Any Frame B Definition Frame B Decimation 0171 0d Any Frame B Definition Frame B Video Blanking 0179 800d Any Frame B Definition Frame B Integration Lines 0181 0d Any Frame B Definition Frame B Integration Clocks 0189 10d Any Frame B Definition Frame B Black Level 0191 001Fh Any Frame B Definition Frame B Gain
Default Value
Hex/Dec
KAC−12040
SPI State Group Register Name
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Table 15. REGISTER DEFINITION (continued)
16 bit
Write Address (Hex)
01D1 CC11h CONFIG Only Config1 01D9 0000h CONFIG or IDLE Config2
01E1 000Ah CONFIG or IDLE Analog/Digital Power Mode 01E9 0000h CONFIG or IDLE Dual-Video Repetition 01F1 0d CONFIG or IDLE Vertical Blanking 01F9 1938d CONFIG or IDLE Fixed Frame Period 0201 1376d CONFIG or IDLE Line Length (LL) 0209 0028h CONFIG or IDLE ADC Bit Depth
0211 0000h CONFIG or IDLE FLO Edge 0219 0000h CONFIG or IDLE MSO Edge 0709 0000h Any CFA Feedback
0711 0000h Any Temperature Sensor FB 0719 0000h Any General Feedback 2059 0300h CONFIG Only Output Bank Select 1 2099 2877h CONFIG Only PLL1 Setting 20A1 0861h CONFIG Only PLL2 Setting 2449 0432h CONFIG Only Sub-LVDS Enable 2479 10ABh Any Column Clamp Threshold A 2481 20C7h Any Column Clamp Threshold B 2499 0011h CONFIG or IDLE Test Pattern Control 1 24A1 0220h CONFIG or IDLE Test Pattern Control 2 24B9 202d CONFIG Only Slope 1 Length 24C1 101d CONFIG Only Slope 2 Length 24C9 101d CONFIG Only Slope 3 Length 24D1 101d CONFIG Only Slope 4 Length 24D9 101d CONFIG Only Slope 5 Length 24E1 420d CONFIG Only Slope 6 Length 24E9 0083g CONFIG Only Slope 1/2 Gain 24F1 038Fh CONFIG Only Slope 3/4 Gain 24F9 0FBFh CONFIG Only Slope 5/6 Gain 2501 1F9Fh CONFIG Only Slope 7 Gain 2559 4804h Any Defect Avoidance Threshold 2561 0006h Any Defect Avoidance Enable 25C1 0003h CONFIG or IDLE Encoded Sync Config 25C9 000Ah CONFIG Only LVDS Power-Down 2619 000Bh CONFIG Only Output Bank Select 2 2D89 0000h CONFIG Only FLO/MSO Polarity 4001 4100h Any Chip Revision Code 4009 0011h Any Chip ID Code MSB
4011 0080h Any Chip ID Code LSB 4019 0000h Any Set Sensor State 4021 0000h CONFIG or IDLE OTP Address
Default Value
Hex/Dec
KAC−12040
SPI State Description
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KAC−12040
Table 15. REGISTER DEFINITION (continued)
16 bit
Write Address (Hex)
4029 0000h CONFIG or IDLE OTP Write Data 4031 0000h CONFIG or IDLE Command_Done_FB 4041 0000h CONFIG or IDLE OTP Read Data 4061 0000h CONFIG or IDLE Soft Reset
NOTES: SPI State (the Sensor State from which the register can be set):
1. “Any”: Can be written from any state (including RUNNING).
2. “CONFIG or IDLE”: These registers can be changed in IDLE or CONFIG states.
3. “CONFIG Only”: Sensor must be in CONFIG state to set these registers.
4. Only Register 4018h and 4060h may be set when the sensor is in STANDBY state. NOTES: Decimal, hexadecimal, binary values:
1. “b” denotes a binary number, a series of bits: MSB is on the left, LSB is on the right.
2. “h” or “hex” denotes a hexadecimal number (Base 16, 1−9, A−F). The letters in a hex number are always capitalized.
3. “d” denotes a decimal number.
4. Note that “0” and “1” are the same value in all number base systems and sometimes the base notation is omitted.
The KAC−12040 features an embedded microprocessor by Cortus.
Default Value
Hex/Dec
DescriptionSPI State
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ABSOLUTE MAXIMUM RATINGS
KAC−12040
For Supplies and Inputs the maximum rating is defined as
a level or condition that should not be exceeded at any time.
degraded and may be damaged. Operation at these values will reduce Mean Time to Failure (MTTF).
If the level or the condition is exceeded, the device will be
Table 16. SUPPLIES
Description Value
AVDD_LV, VDD_DIG −0.25 V; 2.3 V AVDD_HV, Vref_P, VDD_LVDS −0.25 V; 4 V DC Input Voltage at Any Input Pin −0.25 V; VDD_DIG + 0.25 V
Table 17. CMOS INPUTS
Parameter Symbol Minimum Typical Maximum Unit
Input Voltage Low Level V Input Voltage High Level V
IL
IH
−0.3 0.35 VDD_DIG V
0.65 VDD_DIG VDD_DIG + 0.3 V
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KAC−12040
OPERATING RATINGS
Table 18. INPUT CLOCK CONDITIONS
Parameter Minimum Typical Maximum Unit
Frequency for Clk_In1 and Clk_In2 45 48 50 MHz Duty Cycle for Clk_In1 and Clk_In2 40 50 60 %
RESETN 10 ns TRIGGER Pin Minimum Pulse Width 20 ns
TRIGGER must be active at least 4 periods of PLL1 (~12.5 ns at 320 MHz) to start a capture cycle. The polarity of the active
level is configurable by SPI (Register 01D8h Bit 0), the default is active high (i.e. pin = VDD_DIG = trigger request).
Table 19. OPERATING TEMPERATURE
Description Symbol Minimum Maximum Unit
Operating Temperature (Note 1) T
1. Under conditions of no condensation on the sensor.
Table 20. CMOS IN/OUT CHARACTERISTICS
Parameter Symbol Minimum Typical Maximum Unit
Output Voltage Low Level V Output Voltage High Level V
Input Hysteresis Voltage V Pull-up Resistor Value for RESETN Pin R Pull-down Resistor Value for TRIGGER Pin R Current on ADC_REF Pin I
OL
OH TH PU PD
ADC_REF
OP
0.45 V
VDD_DIG − 0.45 V
0.25
62
100
100
−40 80 °C
kW kW mA
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KAC−12040
Table 21. SUPPLIES
Parameter
LVDS IO Supply VDD_LVDS 3.15 3.30 3.63 V Pixel High Voltage Supply AVDD_HV 3.40 3.50 3.60 V
Pixel Low Voltage Supply Vref_P 2.71 2.80 2.88 V Analog Power Supply AVDD_LV 1.71 1.80 1.89 V Digital Power Supply VDD_DIG 1.90 2.00 2.10 V AVDD_HV − Vref_P 0.5 V Power in STANDBY State 10 mW Current in STANDBY State
VDD_LVDS AVDD_HV AVDD_LV Vref_P
VDD_DIG Power in CONFIG State 330 mW Current in CONFIG State
VDD_LVDS
AVDD_HV
AVDD_LV
Vref_P
VDD_DIG Power in IDLE State 410 mW Current in IDLE State
VDD_LVDS
AVDD_HV
AVDD_LV
Vref_P
VDD_DIG Power in RUNNING State 1.5 W Current in RUNNING State
VDD_LVDS in Standard LVDS Mode
VDD_LVDS in Sub-LVDS Mode
AVDD_HV
AVDD_LV
Vref_P
VDD_DIG
1. Voltages relative to VSS. Current measurements made in darkness.
2. PLL2 = 320MHz, Max frame rate (i.e., no row or frame wait time). These average power values will decrease at lower frame rate either from reduced PLL2 or low power state during Line and Frame blanking.
3. Sub-LVDS active.
Symbol Minimum Typical Maximum Unit
< 0.5 < 0.5 < 0.5 < 0.5
4
< 0.5 < 0.5 < 0.5 < 0.5
145
< 0.5
20 < 0.5 < 0.5
145
164 104
74
12
26
396
mA
mA
mA
mA
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SPI (SERIAL PERIPHERAL INTERFACE)
KAC−12040
The SPI communication interface lets the application
system to control and configure the sensor. The sensor has
an embedded slave SPI interface. The application system is the master of the SPI bus.
T able 22.
Sensor I/O
Name
CSN I SPI Chip Select − Active low, this input activates the slave interface in the sensor.
SCK I SPI Clock − Toggled by the master. MISO O SPI Master Serial Data Input − Slave (sensor) serial data output. MOSI I SPI Master Serial Data Output − Slave (sensor) serial data input.
Direction
Description
T able 23.
Parameter
SPI SCK 5 25 50 MHz Duty Cycle on SPI SCK 40 50 60 %
Minimum Typical Maximum Unit
Clock Polarity and Phase
CPOL (Clock POLarity) and CPHA (Clock PHAse) are commonly defined in SPI protocol such as to define SCK clock phase and polarity. The KAC−12040 defaults to
expecting the master to be configured with CPOL = 1 (the base value of the clock is VDD_DIG) and CPHA = 1 (data is valid on the clock rising edge).
CSN
SCK
MOSI
MISO
X
X
X
X
Figure 22. CPOL = 1 and CPHA = 1 Configuration
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SPI Protocol
KAC−12040
Byte 0 Byte 1 Byte 2 Byte 3
CSN
CSN
Sclk
MOSI
Sclk
MOSI
Byte 0 Byte 1 Byte 2 Byte 3
8 Cycles 8 Cycles 8 Cycles 8 Cycles
16 Bit
Address Word
MSB
8 Cycles 8 Cycles 8 Cycles 8 Cycles
16 Bit
LSB
Address Word
MSB
Figure 23. SPI Write Byte Order
LSB MSB LSB
Data to Write
16 Bit
MISO
Figure 24. SPI Read Byte Order
Wait Time
1.5 ms
There is a delay during readback between presenting the address to be read on the MOSI and being able to read the register contents on the MISO. This delay is not the same for all registers. Some are available immediately, some require a longer fetch time. The 1.5 ms shown in Figure 15 is the maximum time to fetch a register’s value when in CONFIG state (the recommended state for changing registers). Some registers can be adjusted during RUNNING state (see the Register Summary on page 25). If performing a readback during RUNNING state, the delay could be as long as 4.5 ms depending on when in the row the request was sent and the sensor’s microcontroller activity at that moment.
Note that readback does not provide the actual register value being used, but reflects the next value to be used. All
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16 Bit
Data to Write
MSB LSB
new register writes are placed in a shadow memory until they can be updated into the active memory. This active memory update occurs at the start of the next frame or upon entering the state listed in the Register Summary table on page 25. Register reads access this shadow memory not the active memory. For instance if the sensor is in RUNNING mode and you adjust the LL in register 200h. You can read back and confirm that your register change was received by the sensor; however, the LL will not change since register 200h can only be changed in CONFIG state. If you change the sensor state to CONFIG and then back to RUNNING, then the new LL will take effect.
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SPI Interface
KAC−12040
CS
T
CS_SETUP
SCK
T
SETUP
MOSI
X
T
OUT_DELAY_CSN
MISO
Table 24. SPI TIMING SPECIFICATION
Symbol
T
CYCLE
T
SETUP
T
HOLD
T
CS_SETUP
T
CS_HOLD
T
OUT_DELAY_CSN
T
OUT_DELAY
T
T
CYCLE
CS_HOLD
T
HOLD
MSB
T
OUT_DELAY
MSB
MSB−1
Figure 25. SPI Timing Chronogram
Minimum Value Maximum Value Unit
20 200 ns
2.9 ns
0.8 ns
2.5 ns
0.1 ns
3.1 4.7 ns
4.9 8.7 ns
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LVDS INTERFACE
KAC−12040
The data output can be configured to follow standard TIA/EIA−644−A LVDS specification or a low power mode compatible with common Sub-LVDS definition used in FPGA industry. (Please refer to the KAC−12040 User Guide for more information).
Unless otherwise noted, min/max characteristics are for T = −40°C to +85°C, output termination resistance
RL = 100 W ±1%, Typical values are at VDD_LVDS =
3.3 V. Use register 2449h to select standard or Sub-LVDS. This
document assumes that Sub-LVDS is active for all power measurements. Standard LVDS can increase the average power consumption as much as 200 mW in the case of minimum horizontal and vertical blanking.
Table 25. ST ANDARD LVDS CHARACTERISTICS
Parameter
Differential Output Voltage VOD 250 355 450 mV VOD Variation between Complementary Output States Common Mode Output Voltage VOCM 1.235 1.259 1.275 V
VOCM Variation between Complementary Output States High Impedance Leakage Current IOZD −1 1 Output Short Circuit Current:
When D+ or D− Connected to Ground
When D+ or D− Connected to 3.3 V Output Capacitance CDO 1.3 pF Maximum Transmission Capacitance Load Expected
(for 260 MHz LVDS Clock)
Symbol Minimum Typical Maximum Unit
DVOD
DVOCM
IOSD
−20 20 mV
−25 25 mV
2.9
12.25
10 pF
4.3
30.47
mA
mA
Table 26. SUB-LVDS CHARACTERISTICS
Parameter
Differential Output Voltage V VOD Variation between Complementary Output States Common Mode Output Voltage V
VOCM Variation between Complementary Output States High Impedance Leakage Current I Output Short Circuit Current:
When D+ or D− Connected to Ground
When D+ or D− Connected to 3.3 V Output Capacitance C Maximum Transmission Capacitance Load Expected
(for 260 MHz LVDS Clock)
Symbol Minimum Typical Maximum Unit
140 180 220 mV
−5 5 mV
0.88 0.90 0.92 V
−10 10 mV
−1 1
1.4
10.21
1.3 pF
10 pF
2.2
30.47
mA
mA
DV
DV
I
OD
OD
OCM
OCM OZD OSD
DO
T able 27.
Parameter Minimum Typical Maximum Unit
LVDS_CLK 50 160 160 MHz Duty Cycle on LVDS_CLK 50 %
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In-Block LVDS Timing Specification
Ideal Sample Times = Center of Data
The tables below give LVDS timing specifications for no
data de-skew applied and with data de-skewing applied.
Data
AA AACC
Clock
BBBB
Figure 26. LVDS Timing Chronogram
KAC−12040
Table 28. IN-BLOCK LVDS TIMING SPECIFICATION (Data Transition Uncertainty − No De-Skew Applied)
Parameter
A 360 ps Max Data Transition Uncertainty (Skew + Jitter) B LVDS Clock Period/4 1/4 LVDS Clock Period = 1/2 PLL2 Period
C C = B − A Minimum Receiver Setup/Hold Time Sample Window
KAC−12040 Example at Maximum PLL2 Speed (320 MHz):
LVDS Clock Frequency = PLL2/2 = 160 MHz LVDS Clock Period = 6250 ps B = LVDS Clock Period/4 = 1563 ps
Value Description
If the sampling window is too small the PLL2 can be reduced to increase the window (parameter C). Alternatively, the majority of the transition uncertainty is potential skew between the 7 data lines. Using de-skewing can remove 350 ps from the uncertainty window.
C = B – A = 1563 – 360 = 1203 ps
Table 29. IN-BLOCK LVDS TIMING SPECIFICATION (Data Transition Uncertainty − Data De-Skewing Applied)
Parameter
A 10 ps Max Data Transition Uncertainty (Jitter) B LVDS Clock Period/4 1/4 LVDS Clock Period = 1/2 PLL2 Period C C = B − A Minimum Receiver Setup/Hold Time Sample Window
Value Description
KAC−12040 Example at Maximum PLL2 Speed (320 MHz): LVDS Clock Frequency = PLL2/2 = 160 MHz LVDS Clock Period = 6250 ps B = LVDS Clock Period/4 = 1563 ps C = B – A = 1563 – 10 = 1553 ps
Table 30. INTER-BLOCK LVDS TIMING SPECIFICATION
Parameter Minimum Typical Maximum Unit
Inter-Block Skew 6 12 LVDS Clock Period
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KAC−12040
STORAGE AND HANDLING
Table 31. STORAGE CONDITIONS
Description Symbol Minimum Maximum Unit Notes
Storage Temperature T Humidity RH 5 90 % 2
1. Long-term storage toward the maximum temperature will accelerate color filter degradation.
2. T = 25°C. Excessive humidity will degrade MTTF.
ST
−40 80 °C 1
For information on ESD and cover glass care and cleanliness, please download the Image Sensor Handling and Best Practices Application Note (AN52561/D) from
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.
For information on soldering recommendations, please download the Soldering and Mounting Techniques Reference Manual (SOLDERRM/D) from
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.
For quality and reliability information, please download the Quality & Reliability Handbook (HBD851/D) from
www.onsemi.com.
For information on device numbering and ordering codes, please download the Device Nomenclature technical note (TND310/D) from www.onsemi.com
.
For information on Standard terms and Conditions of Sale, please download Terms and Conditions
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.
from
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MECHANICAL INFORMATION
Completed Assembly
KAC−12040
Notes:
1. See Ordering Information for marking code.
2. No materials to interfere with clearance through package holes.
3. Imaging Array is centered at the package center.
4. Length dimensions in mm units.
Figure 27. Completed Assembly (1 of 5)
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KAC−12040
Figure 28. Completed Assembly (2 of 5)
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KAC−12040
Figure 29. Completed Assembly (3 of 5)
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KAC−12040
Figure 30. Completed Assembly (4 of 5)
Figure 31. Completed Assembly (5 of 5)
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KAC−12040
P
al
MAR (Multi-Layer Anti-Reflective Coating) Cover Glass
Notes:
1. Units: IN [MM]
2. A-Zone Dust/Scratch Spec: 10 mm Maximum
3. Index of Refraction: 1.5231
Figure 32. MAR Cover Glass Specification
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