MLX75307 Datasheet Summary old 586 DownloadLink 5497

MLX75307
Automotive CMOS camera
Features and Benefits
Application Examples
Panoramic aspect ratio
High sensitivity in low light conditions
Wide temperature range
High input dynamic range snapshot shutter
High output dynamic range
Plastic overmolded package
Single 3.3V power supply
Automotive AEC-Q100, RoHS compliant
Optical area in the middle of the device
HDR mode for tunnels and application fusion
Lane departure warning or lane keeping
High beam and spot beam assist
Night vision
Traffic jam assist
Road sign and pedestrian recognition
Advanced cruise control
Intersection traffic light monitoring
Industrial applications
Surveillance, security
Near infra-red imaging
High temperature imaging
Ordering Information
Part No.
Temperature Code
MLX75307
K (-40°C to 125°C)
MLX75307
K (-40°C to 125°C)
Other versions available.
Package Code
MG (MQFP52)
UC (wafer)
1 Functional Diagram
Digital video out
2 General Description
Light in
The automotive graded MLX75307 is our 3rd
generation fully integrated CMOS image sensor.
Its panoramic resolution and large pixel size make
it optimal for front vision applications including
night operation with high absolute sensitivity and
outstanding SNR. Its snapshot shutter with high
dynamic range allows for capture of fast moving
scenes in presence of bright light sources and
dark shadows. Its wide operation temperature
range of -40 till 125°C allow for a positioning just
under the roof behind the windshield. The cavity
overmolded plastic package gives direct access to
the silicon surface for optimal lens positioning. The
sensor is intended to be used with an external
microcontroller, DSP or ASIC.
The MLX75307 has been characterized according
to the EMVA1288 standard. Melexis is a member
of the European Machine Vision Association 1288
standardization committee. The EMVA1288
standard can be downloaded for free from
emva.org.
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Rev 000
Short Product Information Sheet
Oct/08
MLX75307
Automotive CMOS camera
3 Unique Features
Unique features
Automotive overmolded plastic package.
Large pixel
Fail safe operation
Optical area centered in the plastic package
Novel black pixel reference
Flexible operation
Characterized according to EMVA1288.
Special features
Single voltage supply
Excellent SNR and low light sensitivity
Panoramic VGA (the panoramic aspect ratio is more suited for automotive front vision applications)
Figure 1: Comparison between panoramic VGA and standard VGA
4 Introduction
The MLX75307 is the 3rd generation of the Melexis fully integrated CMOS image sensor for automotive. Its
panoramic resolution and large pixel make it optimal for front vision applications including night operation
featuring high absolute sensitivity and outstanding SNR. Its snapshot shutter (i.e. non-rolling) with high
dynamic range allows for acquisition of fast moving scenes in presence of bright light sources and dark
shadows. Its wide operation temperature ranges from -40 to +125°C electrical (-40 to +105°C for complying
with optical specifications) allows for a positioning just under the roof behind the windshield. The cavity
overmolded plastic package gives direct access to the silicon surface for optimal lens positioning. The sensor
is intended to be used with an external microcontroller, DSP or ASIC for control and image processing.
With respect to response function, several options are possible. The main operation mode provides a mainly
linear response function with 10 bits linear unsigned binary representation. In order to enhance the low light
levels response, the 10 bits response can be extended to a 12:10 companding response, virtually behaving
as a 12 bits response. Further, it is possible to set a programmable low light level in pixel gain (skimming,
increase of low light sensitivity). Finally, in order to accommodate extreme in scene contrasts, it is possible to
select a piecewise linear response function with compression of high light levels (multiple slopes response).
Readout is performed over a digital parallel interface. Reduction of the number of readout rows provides a
linear decrease in readout time. Reduction of the read out number of columns must respect a minimum row
time, otherwise the line break will automatically be increased. Generally in readout the sensor is master over
the digital output bus. However, in a line trigger mode, it is possible to request the transmission of individual
lines only.
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MLX75307
Automotive CMOS camera
The digital part controls the integration sequence, the readout sequence and the operation mode of the
sensor. The digital control part also manages the data interfaces. There is a bi-directional serial configuration
interface, permitting to read from and write to a bench of registers. While the serial configuration interface is a
“slave”, the digital data output interface is generally “master” over the data bus.
The sensor features several operation modes. All operation modes are based on a global shutter
synchronous timing scheme. As an extension of the global shutter mode it is possible to set shorter exposure
times in up to 3 smaller sub-windows. Exposure time can overlap the readout time with some restrictions. It is
the user responsibility to set appropriate trigger delays in order not to over-trigger the device. The sensor can
be run with an external self trigger in a free running mode (without automatic adjustment of the exposure
settings) or with an external frame trigger.
The MLX75307 has been characterized according to the EMVA1288 standard.
Melexis is a member of the European Machine Vision Association (EMVA) 1288
standardization committee. The EMVA1288 standard can be downloaded for
free from emva.org or standard1288.org. The goal of the EMVA1288 standard is
to define test hardware, test algorithms, formulas and test conditions for image
sensors intended to be used in image processing applications. The clear advantage is to speak the same
language in all datasheets to make the device evaluation and comparison easier. Another goal is to
summarize the physical model of imagers.
5 Summary of General Specifications
Parameter
Noise equivalent illumination
Symbol
Saturation with non-linear
response
Programmable integration time
DSNU
Test Conditions
At 550nm, 10ms integration
time, flushed reset mode
Min
At 550nm
(100000)
TA,elec
160E-9
In 10 bit representation, ambient
temperature, 5ms integration
time
In 10 bit representation, ambient
temperature, 5ms integration
time
At 880nm
99.4
PRNU
Global shutter efficiency
Full well capacity
Responsivity non-skimming
Responsivity skimming
Total QE
At 630nm
30
At 630nm
100
At 630nm, including geometrical 38
fill factor
Typ
Max
(0.02)
Units
Lux
Lux
1E-3
100E-3 s
2
DN
3
%
%
Electrons
DN/nJ/cm2
DN/nJ/cm2
%
80000
43
150
42
SNR linear
Saturation signal over read
noise at 10ms integration time
56
dB
SNR in-scene non-linear
Intra-scene saturation
illumination at 1ms integration
time
102
dB
Supply voltage
V
3.0
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Rev 000
3.3
3.6
V
Short Product Information Sheet
Oct/08
MLX75307
Automotive CMOS camera
Power consumption
Ptot
TA,elec
With 20pF load, 50MHz,
maximum toggling, minimum
integration time, maximum area,
LVDS coding mode
600
Regular use
Resolution
Pixel size
Typical frame rate
Interleaved integration and
readout at 7ms integration time
1ms integration time, standard
mode
Analog gain
Spectral range
Dynamic range (maximum intra
scene)
-3
400
Dynamic range (maximum
multi-scene)
Production electrical test
Production optical test
1000
mW
500
mW
750x400
10x10
140
um*um
fps
130
fps
0
+27
1000
110
dB
nm
dB
190
dB
100% at 3 temperatures
100% at 3 temperatures
Table 1: General specifications, all values preliminary until measured
6 Summary of Operating Conditions
o
o
This table is valid for the temperature range TA,elec = -40 C to 125 C.
Parameter
Analog power supply
voltage
Digital power supply
IO power supply voltage
Input clock frequency
Illumination power
Symbol
VDDA
VDDD
VDDIO
Fclk
Pillum
Min
3.0
3.0
3.0
10
<1
Typ
3.3
3.3
3.3
50
Max
MIN(VDDIO;3.6)
MIN(VDDIO;3.6)
3.6
50.1
>100000
Units
V
V
V
MHz
Lux
Table 2: Operating conditions
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Short Product Information Sheet
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MLX75307
Automotive CMOS camera
ANNEX A: Package Information MQFP52
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Short Product Information Sheet
Oct/08
MLX75307
Automotive CMOS camera
Disclaimer
Devices sold by Melexis are covered by the warranty and patent indemnification provisions appearing in its
Term of Sale. Melexis makes no warranty, express, statutory, implied, or by description regarding the
information set forth herein or regarding the freedom of the described devices from patent infringement.
Melexis reserves the right to change specifications and prices at any time and without notice. Therefore, prior
to designing this product into a system, it is necessary to check with Melexis for current information. This
product is intended for use in normal commercial applications. Applications requiring extended temperature
range, unusual environmental requirements, or high reliability applications, such as military, medical lifesupport or life-sustaining equipment are specifically not recommended without additional processing by
Melexis for each application.
The information furnished by Melexis is believed to be correct and accurate. However, Melexis shall not be
liable to recipient or any third party for any damages, including but not limited to personal injury, property
damage, loss of profits, loss of use, interrupt of business or indirect, special incidental or consequential
damages, of any kind, in connection with or arising out of the furnishing, performance or use of the technical
data herein. No obligation or liability to recipient or any third party shall arise or flow out of Melexis’ rendering
of technical or other services.
All trademark herein are property of their respective owner.
© 2008 Melexis NV. All rights reserved.
For the latest version of this document, go to our website at
www.melexis.com
Or for additional information contact Melexis Direct:
[email protected]
Europe, Africa, Asia:
America:
Phone: +32 1367 0495
E-mail: [email protected]
Phone: +1 603 223 2362
E-mail: [email protected]
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Oct/08