MLX75307BA 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. Page 1 of 6 Rev 000 Short Product Information Sheet Dec/08 MLX75307BA 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. Page 2 of 6 Rev 000 Short Product Information Sheet Dec/08 MLX75307BA 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 Resolution Symbol Test Conditions Noise equivalent illumination At 550nm, 10ms integration time, flushed reset mode Saturation with non-linear response Programmable integration time DSNU At 550nm Global shutter efficiency Full well capacity Responsivity non-skimming Responsivity skimming Total QE (100000) At 630nm 30 At 630nm 100 At 630nm, including geometrical 38 fill factor SNR linear Saturation signal over read noise at 10ms integration time Intra-scene saturation illumination at 1ms integration time SNR in-scene non-linear V Units pixels Lux Lux 1E-3 100E-3 s 2 DN 3 % % Electrons DN/nJ/cm2 DN/nJ/cm2 % 80000 43 150 42 56 dB 102 dB 3.0 Page 3 of 6 Rev 000 Typ Max 750x400 (0.02) 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 Supply voltage Min 3.3 3.6 V Short Product Information Sheet Dec/08 MLX75307BA 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 Page 4 of 6 Rev 000 Short Product Information Sheet Dec/08 MLX75307BA Automotive CMOS camera ANNEX A: Package Information MQFP52 14x14mm body 16x16mm including leads Page 5 of 6 Rev 000 Short Product Information Sheet Dec/08 MLX75307BA 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] ISO/TS 16949 and ISO14001 Certified Page 6 of 6 Rev 000 Short Product Information Sheet Dec/08