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| Reflective Color Sensor Assembly OPB780Z Features: * * * * * * High-resolution conversion of light intensity to frequency Selectable color output frequency Communicates directly with a microcontroller Sensor power supply operation (2.7 V to 5.5 V) LED power separate input Includes LED, Sensor and interface cable Description: The OPB780Z color sensor uses a light-to-frequency converter that combines 64 configurable silicon photodiodes (on a 144 um center and measuring 120 um x 120 um each), with a white LED in a small, lightweight package that makes it ideal for using in miniature applications. The output is a square wave (50% duty cycle) with a frequency directly proportional to reflected light intensity (irradiance). The light-to-frequency converter reads an 8 x 8 array of photodiodes that consists of four groups of 16 photodiodes each, segregated by color: 16 photodiodes with red filters, 16 photodiodes with green filters, 16 photodiodes with blue filters and 16 clear photodiodes with no filters. Each color's group of 16 photodiodes is interdigitated to minimize the effect of non-uniformity of the incident irradiance. Each color's group is also connected in parallel. The type of photodiode used during operation is pin-selectable. The output of the device is designed to drive a standard TTL or CMOS logic input over short distances. The internal photodiode used by the device is controlled by two logic inputs, S2 and S3. See page 4 for more information. A 10 " [25.4 cm] Flat Flexible Cable (FFC) is included for easy hook-up. The FFC is designed to interface with an AVX (ELCO) part number 04 6249 0080 00 800 connector. For more information, contact your local representative or OPTEK. Applications: * * * * * Photographic equipment Colormetry Chemical analyzers Display contrast controls High resolution digital measurement of light intensity Block Diagram Light Photodiode Array S2 6 S3 4 Current-to-Frequency Out Converter 3 RoHS Ordering Information OPB780Z KA3128 OPB780 with 10" Long Flat Flex Cable 10" Long Flat Flex Cable OPTEK reserves the right to make changes at any time in order to improve design and to supply the best product possible. OPTEK Technology Inc. -- 1645 Wallace Drive, Carrollton, Texas 75006 Phone: (972) 323-2200 or (800) 341-4747 FAX: (972) 323-2396 sensors@optekinc.com www.optekinc.com Issue A.3 04/07 Page 1 of 6 Reflective Color Sensor Assembly OPB780Z Absolute Maximum Ratings1, 2 (TA = 25 C unless otherwise noted) Operating Temperature Storage Temperature TOPR = -30 C to +85 C TSTG = -30 C to +85 C LED--Absolute Maximum Ratings1, 2 (TA = 25 C unless otherwise noted) Reverse Voltage Forward Current Power Dissipation Peak Forward Current VR = 5 V IF = 30 mA PD = 120 mW IFP = 100 mA Sensor--Absolute Maximum Ratings1, 2 (over operating free-air temperature range unless otherwise noted) Supply Voltage(VDD) Input Voltage (all inputs, VI) 6V -0.3 V to VDD + 0.3 V Notes: (1) Stresses beyond those linked under "absolute maximum rating" may cause permanent damage to device. These are only stress ratings, and functional operating of the device at these (or any other) conditions beyond those indicated in the Recommended Operating Conditions table shown above may affect the device's reliability. (2) All voltage values are with respect to GND. SO S1 OE 7,8 Gnd S3 S2 Out VDD Cap (0.1f) 6 4 3 1,2 5 LED DO NOT LOOK DIRECTLY AT LED WITH UNSHIELDED EYES OR DAMAGE TO RETINA MAY OCCUR. Pin Name VDD OUT S2 LED Anode S3 GND Pin # 1, 2 3 4 5 6 7, 8 Description Supply voltage Output Frequency (FO) Photodiode type selection input LED input Photodiode type selection input Power supply ground OPTEK reserves the right to make changes at any time in order to improve design and to supply the best product possible. Issue A.3 04/07 Page 2 of 6 OPTEK Technology Inc. -- 1645 Wallace Drive, Carrollton, Texas 75006 Phone: (972) 323-2200 or (800) 341-4747 FAX: (972) 323-2396 sensors@optekinc.com www.optekinc.com Reflective Color Sensor Assembly OPB780Z LED Electro-Optical Characteristics of LED1 (TA = 25C unless otherwise noted) (See OVLAW4CB6 for more info.) SYMBOL IV (1) PARAMETER Luminous Intensity Forward Voltage Reverse Current MIN 2.8 - TYP 1.0 3.4 - MAX 3.9 10 UNITS cd V A IF = 20 mA IF = 5 mA VR = 5 V TEST CONDITIONS VF IR Sensor Recommended Operating Conditions1 SYMBOL VDD VIH VIL TA PARAMETER Supply Voltage High-Level Input Voltage Low-Level Input Voltage Operating Free-Air Temperature Range MIN 2.7 2.0 0.0 -40 TYP 5 MAX 5.5 VDD 0.8 +70 UNITS V V V C VDD = 2.7 V to 5.5 V VDD = 2.7 V to 5.5 V RECOMMENDED CONDITIONS - Sensor Electrical Characteristics1 (TA = 25 C, VDD = 5 V unless otherwise noted) SYMBOL VOH VOL IIH IIL IDD tr, tf PARAMETER High-Level Output Voltage 3 Low-Level Output Voltage High-Level Input Current Low-Level Input Current Supply Current Full-Scale Frequency 2 3 MIN - TYP 4.5 0.25 2 600 200 100 MAX 5 5 3 - UNITS V V mA kHz ppm/C sec. Power on IOH = -4 mA IOL = 4 mA TEST CONDITIONS - 700 nm, -25 C TA 70 C / 200 ppm/ C - Temperature Coefficient of Output Frequency Typical Temperature Rise Time Typical Temperature Fall Time Notes: (1) All voltage values are with respect to GND. (2) Full-scale frequency is the maximum operating frequency of the device without saturation. (3) Output interface of device is designed to drive a standard TTL or CMOS logic input over short distances. If lines greater than 12 inches are used on output, a buffer or line driver is recommended. OPTEK reserves the right to make changes at any time in order to improve design and to supply the best product possible. OPTEK Technology Inc. -- 1645 Wallace Drive, Carrollton, Texas 75006 Phone: (972) 323-2200 or (800) 341-4747 FAX: (972) 323-2396 sensors@optekinc.com www.optekinc.com Issue A.3 04/07 Page 3 of 6 Reflective Color Sensor Assembly OPB780Z Coupled Characteristics1 (VDD = 5 V, TA = 25 C, IF = 5mA) RED SYMBOL PARAMETER S2=L/S3=L GREEN S2=H/S3=H BLUE S2=L/S3=H CLEAR S2=H/S3=L PARAMETER IF = 5 mA, D = 0.225 inch, with red target IF = 5 mA, D = 0.225 inch, with green target IF = 5 mA, D = 0.225 inch, with blue target IF = 5 mA, D = 0.225 inch, with white target TYPICAL 16.0 K kHz Output Frequency See note(9) 4.0 K 2.2 K 35.7 K Notes: (1) All voltage values are with respect to GND. 3.5 K 7.5 K 3.4 K 35.8 K 2.7 K 5.2 K 9.5 K 39.3 K 23.9 K 19.9 K 16.1 K 126.0 K OPB780Z Sensor Typical Electro-Optical Characteristics Curves Spectral Response with Hoya CM230 Filter (not included) Relative Responsivity Relative Responsivity 1.0 0.9 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0.1 0.0 300 No rmalized to Clear @ 530 nm TA = 25 C Spectral Response Photodiode Spectral Responsivity 1.0 0.9 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0.1 0.0 300 500 700 900 1100 No rmalized to Clear @ 680 nm TA = 25 C 500 700 900 1100 p Wavelength (nm) p Wavelength (nm) OPTEK reserves the right to make changes at any time in order to improve design and to supply the best product possible. Issue A.3 04/07 Page 4 of 6 OPTEK Technology Inc. -- 1645 Wallace Drive, Carrollton, Texas 75006 Phone: (972) 323-2200 or (800) 341-4747 FAX: (972) 323-2396 sensors@optekinc.com www.optekinc.com Reflective Color Sensor Assembly OPB780Z OPB780Z Sensor & LED - Typical Electro-Optical Characteristics Curves Sensor Radiation Diagram 0 TA = 25 10 20 30 Forward Current vs Chromaticity Coordinate 0.35 TA = 25 C 0.34 40 1.0 0.9 0.8 0.7 1 mA 0.33 Y 5 mA 20 mA 50 mA 100 mA 0.30 0.31 X 0.32 0.33 0.34 50 60 70 80 90 0.5 0.3 0.1 0.2 0.4 0.6 0.32 0.31 0.30 0.29 Spectrum LED Spectrum 1.2 Relative Emission Intensity (a.u.) 1.0 0.8 0.6 0.4 0.2 0.0 350 TA = 25 C IF = 20 mA Ambient Temperature vs Chromaticity Coordinate 0.35 IFP = 20 mA 0.34 0.33 Y 0.32 50 C 0.31 85 C 25 C -30 C 0 C 450 550 650 Wavelength p (nm ) 750 0.30 0.29 0.30 0.31 X 0.32 0.33 0.34 LED Directivity Relative Luminosity (a.u.) TA = 25 C IF = 20 mA Radiation Angle OPTEK reserves the right to make changes at any time in order to improve design and to supply the best product possible. OPTEK Technology Inc. -- 1645 Wallace Drive, Carrollton, Texas 75006 Phone: (972) 323-2200 or (800) 341-4747 FAX: (972) 323-2396 sensors@optekinc.com www.optekinc.com Issue A.3 04/07 Page 5 of 6 Reflective Color Sensor Assembly OPB780Z OPB780Z LED - Typical Electro-Optical Characteristics Curves Forward Voltage vs Forward Current Forward Current IFP (mA) TA = 25o C 100 Forward Current vs Relative Luminousity Relative Lum inousity (a.u.) 4.0 3.5 3.0 2.5 2.0 1.5 1.0 0.5 0.0 0 20 40 60 80 100 120 TA = 25o C 1000 10 1 2.5 3.0 3.5 4.0 4.5 5.0 Forward Voltage VF (V) Forward Current IFP (mA) Ambient Temperature vs Forward Voltage 5.4 Duty Ratio vs Allowable Forward Current 1000 Allowable Forward Current IFP (mA) Forward Voltage VF (V) TA = 25 C o 5.0 4.6 4.2 3.8 3.4 3.0 2.6 -40 -20 IFP = 60 mA IFP = 20 mA IFP = 5 mA 100 10 1 10 100 0 20 40 60 80 100 Duty Ratio (%) Ambient Temperature TA (oC) Ambient Temperature vs Relative Luminosity 10.0 Ambient Temperature vs Allowable Forward Current 40 Allowable Forward Current IF (mA) Relative Luminosity (a.u.) IFP = 20 mA 30 1.0 20 10 0.1 -40 0 0 20 40 60 80 100 Am bient Tem perature TA (oC) -20 0 20 40 60 80 100 Ambient Temperature TA (C) OPTEK reserves the right to make changes at any time in order to improve design and to supply the best product possible. Issue A.3 04/07 Page 6 of 6 OPTEK Technology Inc. -- 1645 Wallace Drive, Carrollton, Texas 75006 Phone: (972) 323-2200 or (800) 341-4747 FAX: (972) 323-2396 sensors@optekinc.com www.optekinc.com |
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