Distance linear image sensor
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- Rosamond Thornton
- 6 years ago
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1 Measures the distance to an object by TOF (time-of-flight) method The distance image sensor is designed to measure the distance to an object by TOF method. When used in combination with a pulse modulated light source, this sensor outputs phase difference information on the timing that the light is emitted and received. The sensor signals are arithmetically processed by an external signal processing circuit or a PC to obtain distance data. We provide an evaluation kit for this product. Contact us for detailed information. Features High-speed charge transfer Wide dynamic range, low noise by non-destructive readout Operates with minimal detection errors even under fluctuating background light (charge drain function) Real-time distance measurement Applications Obstacle detection (self-driving, robots, etc.) Security (intrusion detection, etc.) Shape recognition (logistics, robots, etc.) Motion capture Structure Parameter Specification Unit Image size mm Pixel pitch 22 μm Pixel height 50 μm Number of pixels 80 pixels Number of effective pixels 64 pixels Package 22-pin PWB - Window material AR-coated glass - Note: This product is not hermetically sealed. Absolute maximum ratings Parameter Symbol Condition alue Unit Analog supply voltage dd(a) Ta=25 C -0.3 to +6 Digital supply voltage dd(d) Ta=25 C -0.3 to +6 Pixel amplifier sf Analog input terminal Pixel reset r voltage Photosensitive area pg Ta=25 C -0.3 to dd(a) Pixel reset pulse Signal sampling pulse Digital input terminal Master clock pulse voltage Signal readout trigger pulse trig Ta=25 C -0.3 to dd(d) Output signal synchronous pulse dclk Charge transfer clock pulse voltage TX1, TX2, TX3 Ta=25 C -0.3 to dd(a) Operating temperature Topr No dew condensation* 1-25 to +85 C Storage temperature Tstg No dew condensation* 1-40 to +100 C Reflow soldering condition* 2 Tsol Peak temperature 260 C max., twice (see P.8) - *1: When there is a temperature difference between a product and the surrounding area in high humidity environment, dew condensation may occur on the product surface. Dew condensation on the product may cause deterioration in characteristics and reliability. *2: JEDEC level 3 Note: Exceeding the absolute maximum ratings even momentarily may cause a drop in product quality. Always be sure to use the product within the absolute maximum ratings. 1
2 Recommended terminal voltage (Ta=25 C) Parameter Symbol Min. Typ. Max. Unit Analog supply voltage dd(a) Digital supply voltage dd(d) Pixel amplifier sf dd(a) Pixel reset r dd(a) Bias voltage Photosensitive pg area Pixel reset pulse voltage High level Low level - - dd(d) 0.2 Signal sampling pulse voltage High level Low level - - dd(d) 0.2 Master clock pulse voltage High level Low level - - dd(d) 0.2 Signal readout trigger pulse High level trig voltage Low level - - dd(d) 0.2 Output signal synchronous pulse High level dd(d) dclk voltage Low level - - dd(d) 0.2 Electrical characteristics [Ta=25 C, dd(a)=dd(d)=5 ] Parameter Symbol Condition Min. Typ. Max. Unit Clock pulse frequency 1 M - 5 M Hz ideo data rate R - - Hz Current consumption Icc Dark state ma Electrical and optical characteristics [Ta=25 C, dd(a)=dd(d)=5, sf=5, r=4.25, MCLK=5 MHz] Parameter Symbol Min. Typ. Max. Unit Spectral response range λ 440 to 1000 nm Peak sensitivity wavelength λp nm Photosensitivity* 3 S /W s m 2 Dark output d /s Random noise RN m rms Dark output voltage* 4 or Saturation output voltage sat Sensitivity ratio* 5 SR Photoresponse nonuniformity* 6 PRNU - - ±10 % *3: Monochromatic wavelength light source (λ=805 nm) *4: Output value right after reset in dark state *5: Output ratio of out1 (TX1=3, TX2=TX3=0 ) to out2 (TX2=3, TX1=TX3=0 ) *6: Photoresponse nonuniformity (PRNU) is the output nonuniformity that occurs when the entire photosensitive area is uniformly illuminated by light which is 50% of the saturation exposure level. PRNU is measured using 64 pixels excluding 8 pixels each at both ends, and is defi ned as follow: PRNU= X/X 100 (%) X: average of the output of all pixels, X: difference between the maximum or minimum output and X 2
3 Spectral response (typical example) 1.0 (Typ. Ta=25 C) Relative sensitivity Wavelength (nm) KMPDB0375EB Block diagram GND GND GND GND GND dd(a) GND r sf pg TX3 TX2 TX out1 12 out2 Buffer amplifier trig dd(d) 11 GND 9 dclk KMPDC0624EA Basic connection example out 1 Buffer amplifier out 2 Buffer amplifier KMPDC0486EA 3
4 Timing chart t0 thp() t8 t1 thp() t2 t7 trig out1 out2 t3 t4 t6 t5 Output ch Output ch dclk TX1, 2, 3 t9 t10 t11 TX enable TX enable Light tpi(tx) thp(tx1) TX1 thp(tx2) TX2 TX3 tlp(tx1) tlp(tx2) thp(tx3) tlp(tx3) KMPDC0625EA KMPDC0625EA tr() t tr() tf() tf(dclk) tr(dclk) tr() tf() tr(trig) tf(trig) dclk td(dclk) td(vout) trig out1 out2 tr(vout) 0.1 tf(vout) t0 KMPDC0432EA 4
5 Calculation method of frame rate Frame rate=1/(time per frame) =1/(Integration time + Readout time) It is necessary to be changed by the required distance accuracy and usage environment factors such as fl uctuating background light. 1 Readout time= Clock pulse frequency Number of horizontal pixels =Time per clock (Readout time per pixel) Number of horizontal pixels Calculation example of readout time (clock pulse frequency=5 MHz, number of horizontal pixels=80) 1 Readout time= [Hz] 80 =200 [ns] 80 =0.016 [ms] When operating in non-destructive readout mode: Time per frame=integration time + (Readout time Non-destructive readout count) 5
6 Parameter Symbol Min. Typ. Max. Unit Master clock pulse duty ratio % Master clock pulse rise and fall times tr(), t 0-20 ns Pixel reset pulse high period thp() μs Pixel reset pulse rise and fall times tr(), tf() 0-20 ns Signal sampling pulse high period thp(phic) μs Signal sampling pulse rise and fall times tr(phic), tf(phic) 0-20 ns Signal readout trigger pulse rise and fall times tr(trig), tf(trig) 0-20 ns Time from rising edge of master clock pulse to pixel reset pulse t ns Time from rising edge of pixel reset pulse to rising edge of signal sampling pulse t μs Time from falling edge of signal sampling pulse to rising edge of signal readout trigger pulse t μs Time from rising edge of master clock pulse to rising 1/4 1/ 1/2 1/ t3 - edge of signal readout trigger pulse s Time from rising edge of signal readout trigger pulse 1/4 1/ 1/2 1/ t4 - to rising edge of master clock pulse s Time from rising edge of master clock pulse to falling 1/4 1/ 1/2 1/ t5 - edge of signal readout trigger pulse s Time from falling edge of signal readout trigger pulse 1/4 1/ 1/2 1/ t6 - to rising edge of master clock pulse s Time from rising edge of master clock pulse (after reading signals from all pixels) to rising edge of output t7 1/ - - s signal sampling pulse Time from rising edge of master clock pulse (after reading signals from all pixels) to rising edge of pixel t8 1/ - - s reset pulse Time from rising edge of master clock pulse to falling edge of output signal synchronous pulse* 7 td(dclk) ns Output signal synchronous pulse output voltage rise time (10 to 90%)* 7 tr(dclk) ns Output signal synchronous pulse output voltage fall time (10 to 90%)* 7 tf(dclk) ns Settling time of output signal 1, 2 (10 to 90%)* 7 * 8 tr(out), tf(out) ns Time from rising edge of master clock pulse to output signal 1, 2 (output 50%)* 7 td(out) ns Charge transfer clock pulse interval tpi(tx) ns Charge transfer clock pulse (TX1) high period thp(tx1) ns Charge transfer clock pulse (TX1) low period tlp(tx1) - tpi(tx) - thp(tx2) - - ns thp(tx3) Charge transfer clock pulse (TX2) high period thp(tx2) ns Charge transfer clock pulse (TX2) low period tlp(tx2) - tpi(tx) - thp(tx1) - - ns thp(tx3) Charge transfer clock pulse (TX3) high period thp(tx3) ns Charge transfer clock pulse (TX3) low period tlp(tx3) - tpi(tx) - thp(tx1) - - ns thp(tx2) Charge transfer clock pulse voltage rise time tr(tx) ns Charge transfer clock pulse voltage fall time tf(tx) ns Charge transfer clock High level TX1, TX2, TX3 pulse voltage Low level Time from the rising edge of the signal readout trigger pulse to the start of TX operation t9 1/ - - s Time from the end of TX operation to the rising edge of the output signal synchronous pulse t10 1/ - - s Time from the end of TX operation to the rising edge of the pixel reset pulse t11 1/ - - s *7: Load capacitance CL=3 pf *8: Output voltage=0.1 6
7 Input terminal capacitance (Ta=25 C, dd=5 ) Parameter Symbol Min. Typ. Max. Unit Charge transfer clock pulse internal load capacitance CLTX pf Dimensional outline (unit: mm) Recommended land pattern (unit: mm) Hole ϕ Photosensitive area P0.8 4= Photosensitive surface Glass 6.1 P0.8 4= P0.8 5= P0.8 5=4.0 (22 ) 0.4 KMPDC0626EA Electrode (22 ) 0.4 Tolerance unless otherwise noted: ±0.2 KMPDA0570EB 7
8 Pin connections Pin no. Symbol I/O Description 1 r I Bias voltage (pixel reset) 2 TX3 I Charge transfer clock pulse 3 3 TX2 I Charge transfer clock pulse 2 4 TX1 I Charge transfer clock pulse 1 5 I Pixel reset pulse 6 I Signal sampling pulse 7 I Master clock pulse 8 trig I Signal readout trigger pulse 9 dclk O Output signal synchronous pulse 10 dd(d) I Digital supply voltage 11 GND I Ground 12 out2 O Output signal 2 13 out1 O Output signal 1 14 GND I Ground 15 dd(a) I Analog supply voltage 16 pg I Bias voltage (photosensitive area) 17 sf I Bias voltage (pixel amplifier) 18 GND I Ground 19 GND I Ground 20 GND I Ground 21 GND I Ground 22 GND I Ground Note: Connect an impedance converting buffer amplifier to out1/out2 terminals so as to minimize the current flow. Measured example of temperature profile with our hot-air reflow oven for product testing 300 C 260 C max. 230 C Temperature 190 C 170 C Preheat 60 to 120 s Soldering 40 s max. Time KMPDB0381EA This product supports lead-free soldering. After unpacking, store it in an environment at a temperature of 30 C or less and a humidity of 60% or less, and perform soldering within 168 hours. The effect that the product receives during reflow soldering varies depending on the circuit board and reflow oven that are used. When you set reflow soldering conditions, check that problems do not occur in the product by testing out the conditions in advance. 8
9 Related information Precautions Disclaimer Surface mount type products Image sensors Evaluation kit for distance linear image sensor () An evaluation kit [110 mm (H) 70 mm ()] for understanding the operating principle of Hamamatsu s distance linear image sensor is available. Contact us for detailed information. Information described in this material is current as of April Product specifications are subject to change without prior notice due to improvements or other reasons. This document has been carefully prepared and the information contained is believed to be accurate. In rare cases, however, there may be inaccuracies such as text errors. Before using these products, always contact us for the delivery specification sheet to check the latest specifications. The product warranty is valid for one year after delivery and is limited to product repair or replacement for defects discovered and reported to us within that one year period. However, even if within the warranty period we accept absolutely no liability for any loss caused by natural disasters or improper product use. Copying or reprinting the contents described in this material in whole or in part is prohibited without our prior permission. HAMAMATSU PHOTONICS K.K., Solid State Division Ichino-cho, Higashi-ku, Hamamatsu City, Japan, Telephone: (81) , Fax: (81) U.S.A.: Hamamatsu Corporation: 360 Foothill Road, Bridgewater, N.J , U.S.A., Telephone: (1) , Fax: (1) , usa@hamamatsu.com Germany: Hamamatsu Photonics Deutschland GmbH: Arzbergerstr. 10, D Herrsching am Ammersee, Germany, Telephone: (49) , Fax: (49) , info@hamamatsu.de France: Hamamatsu Photonics France S.A.R.L.: 19, Rue du Saule Trapu, Parc du Moulin de Massy, Massy Cedex, France, Telephone: 33-(1) , Fax: 33-(1) , infos@hamamatsu.fr United Kingdom: Hamamatsu Photonics UK Limited: 2 Howard Court, 10 Tewin Road, Welwyn Garden City, Hertfordshire AL7 1BW, United Kingdom, Telephone: (44) , Fax: (44) , info@hamamatsu.co.uk North Europe: Hamamatsu Photonics Norden AB: Torshamnsgatan Kista, Sweden, Telephone: (46) , Fax: (46) , info@hamamatsu.se Italy: Hamamatsu Photonics Italia S.r.l.: Strada della Moia, 1 int. 6, Arese (Milano), Italy, Telephone: (39) , Fax: (39) , info@hamamatsu.it China: Hamamatsu Photonics (China) Co., Ltd.: B1201, Jiaming Center, No.27 Dongsanhuan Beilu, Chaoyang District, Beijing , China, Telephone: (86) , Fax: (86) , hpc@hamamatsu.com.cn Taiwan: Hamamatsu Photonics Taiwan Co., Ltd.: 8F-3, No. 158, Section2, Gongdao 5th Road, East District, Hsinchu, 300, Taiwan R.O.C. Telephone: (886) , Fax: (886) , info@hamamatsu.com.tw Cat. No. KMPD1183E03 Apr DN 9
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