TSL250R, TSL251R, TSL252R LIGHTTOVOLTAGE OPTICAL SENSORS TAOS028A – MAY 2001 Monolithic Silicon IC Containing PACKAGE (FRONT VIEW) Photodiode, Operational Amplifier, and Feedback Components Converts Light Intensity to a Voltage High Irradiance Responsivity, Typically 137 mV/(W/cm2) at p = 635 nm (TSL250R) Compact 3-Lead Clear Plastic Package Single Voltage Supply Operation Low Dark (Offset) Voltage....10mV Max Low Supply Current......1.1 mA Typical Wide Supply-Voltage Range.... 2.7 V to 5.5 V Replacements for TSL250, TSL251, and TSL252 1 2 GND VDD 3 OUT Description The TSL250R, TSL251R, and TSL252R are light-to-voltage optical sensors, each combining a photodiode and a transimpedance amplifier (feedback resistor = 16 MΩ, 8 MΩ, and 2.8 MΩ respectively) on a single monolithic IC. Output voltage is directly proportional to the light intensity (irradiance) on the photodiode. These devices have improved amplifier offset-voltage stability and low power consumption and are supplied in a 3-lead clear plastic sidelooker package with an integral lens Functional Block Diagram – Voltage Output + Terminal Functions TERMINAL NAME DESCRIPTION NO. GND 1 Ground (substrate). All voltages are referenced to GND. OUT 3 Output voltage VDD 2 Supply voltage www.taosinc.com Copyright 2001, TAOS Inc. Texas Advanced Optoelectronic Solutions Inc. 800 Jupiter Road, Suite 205 Plano, TX 75074 (972) 673-0759 1 TSL250R, TSL251R, TSL252R LIGHTTOVOLTAGE OPTICAL SENSORS TAOS028A – MAY 2001 Absolute Maximum Ratings over operating free-air temperature range (unless otherwise noted)† Supply voltage, VDD (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 V Output current, IO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±10 mA Duration of short-circuit current at (or below) 25°C (see Note 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 s Operating free-air temperature range, TA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –25°C to 85°C Storage temperature range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –25°C to 85°C Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 240°C † Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. NOTES: 1. All voltages are with respect to GND. 2. Output may be shorted to supply. Recommended Operating Conditions MIN Supply voltage, VDD Operating free-air temperature, TA NOM MAX UNIT 2.7 5.5 V 0 70 °C Electrical Characteristics at VDD = 5 V, TA = 25°C, λp = 635 nm, RL = 10 kΩ (unless otherwise noted) (see Notes 3, 4, and 5) PARAMETER TEST CONDITIONS TSL250R MAX MIN TYP MAX MIN TYP MAX 0 4 10 0 4 10 0 4 10 3.0 3.3 3.0 3.3 1.5 2 1.5 2 Dark voltage Ee = 0 VOM Maximum output voltage VDD = 4.5 V 3.0 3.3 Ee = 14.6 µW/cm2 1.5 2 Output Out ut voltage αvo Ne IDD Temperature coefficient of output voltage g (VO) Irradiance responsivity Supply y current 1.6 mV/°C %/°C 1.6 mV/°C 0.08 %/°C µW/cm2, Ee = 196 TA = 0°C to 70°C λp = 635 nm, See Notes 5 and 7 137 λp = 880 nm, See Notes 6 and 7 127 Ee = 14.6 µW/cm2 1.1 52 mV/°C %/°C mV/(µW/cm mV/( W/cm2) µW/cm2 48 9.4 1.7 1.1 1.7 mA 1.1 1.7 Measurements are made with RL = 10 kΩ between output and ground. Optical measurements are made using small-angle incident radiation from an LED optical source. The input irradiance Ee is supplied by an AlInGaP LED with peak wavelength λp = 635 nm The input irradiance Ee is supplied by a GaAlAs LED with peak wavelength λp = 880 nm Irradiance responsivity is characterized over the range VO = 0.05 to 2.9 V. The best-fit straight line of Output Voltage VO versus irradiance Ee over this range will typically have a positive extrapolated VO value for Ee = 0. Copyright 2001, TAOS Inc. 2 1.6 0.08 10.2 Ee = 196 µW/cm2 NOTES: 3. 4. 5. 6. 7. V 2.5 0.08 Ee = 38.5 µW/cm2, TA = 0°C to 70°C Ee = 38.5 mV V 2.5 µW/cm2 Ee = 14.6 µW/cm2, TA = 0°C to 70°C UNIT 2.5 Ee = 38.5 µW/cm2 Ee = 196 TSL252R TYP VD VO TSL251R MIN www.taosinc.com TSL250R, TSL251R, TSL252R LIGHTTOVOLTAGE OPTICAL SENSORS TAOS028A – MAY 2001 Dynamic Characteristics at TA = 25°C (see Figure 1) TSL250R PARAMETER TEST CONDITIONS MIN TYP TSL251R MAX MIN TYP TSL252R MAX MIN TYP MAX UNIT tr Output pulse rise time VDD = 5 V, λp = 635 nm 260 70 7 µs tf Output pulse fall time VDD = 5 V, λp = 635 nm 260 70 7 µs Vn Output noise voltage VDD = 5 V, f = 1000 Hz Ee = 0, 0.8 0.7 0.6 µV/√Hz PARAMETER MEASUREMENT INFORMATION VDD Pulse Generator Ee 2 Input LED (see Note A) – 3 tf tr Output + 90% RL TSL25xR 1 Output (see Note B) 10% 90% 10% VOLTAGE WAVEFORM TEST CIRCUIT NOTES: A. The input irradiance is supplied by a pulsed AlInGaP light-emitting diode with the following characteristics: λp = 635 nm, tr < 1 µs, tf < 1 µs. B. The output waveform is monitored on an oscilloscope with the following characteristics: tr < 100 ns, Zi ≥ 1 MΩ, Ci ≤ 20 pF. Figure 1. Switching Times www.taosinc.com Copyright 2001, TAOS Inc. 3 TSL250R, TSL251R, TSL252R LIGHTTOVOLTAGE OPTICAL SENSORS TAOS028A – MAY 2001 TYPICAL CHARACTERISTICS OUTPUT VOLTAGE vs IRRADIANCE PHOTODIODE SPECTRAL RESPONSIVITY 1.2 TA = 25°C Normalized to 635 nm TSL251R 1 Relative Responsivity VO – Output Voltage – V 10 V = 5 V DD λp = 635 nm RL = 10 k TA = 25°C 1 TSL250R TSL252R 0.1 0.8 0.6 0.4 0.2 0.01 0.1 1 10 Ee – Irradiance – µW/cm2 0 300 100 500 Figure 2 SUPPLY CURRENT vs OUTPUT VOLTAGE 1.6 VDD = 5 V RL = 10 k TA = 25°C RL = 10 kΩ TA = 25°C 4 I DD – Supply Current – mA VOM – Maximum Output Voltage – V 5 3 2 1 1.4 1.2 1 0.8 3 4 4.5 3.5 VDD – Supply Voltage – V 5 5.5 0.6 0 1 Figure 4 Copyright 2001, TAOS Inc. 4 1100 Figure 3 MAXIMUM OUTPUT VOLTAGE vs SUPPLY VOLTAGE 0 2.5 700 900 λ – Wavelength – nm 2 3 VO – Output Voltage – V 4 Figure 5 www.taosinc.com TSL250R, TSL251R, TSL252R LIGHTTOVOLTAGE OPTICAL SENSORS TAOS028A – MAY 2001 TYPICAL CHARACTERISTICS NORMALIZED OUTPUT VOLTAGE vs ANGULAR DISPLACEMENT 1 TSL252R TSL251R TSL250R 0.6 Optical Axis VO – Normalized Output Voltage 0.8 0.4 0.2 0 80° 60° 40° 20° 0° 20° 40° θ – Angular Displacement 60° 80° Figure 6 www.taosinc.com Copyright 2001, TAOS Inc. 5 TSL250R, TSL251R, TSL252R LIGHTTOVOLTAGE OPTICAL SENSORS TAOS028A – MAY 2001 MECHANICAL INFORMATION The device is supplied in a clear plastic three-lead package. The integrated photodiode active area is typically 1,0 mm2 (0.0016 in2) for TSL250R, 0,5 mm2 (0.00078 in2) for the TSL251R, and 0,26 mm2 (0.0004 in2) for the TSL252R. 0.072 (1,84) 0.057 (1,44) 0.189 (4,80) 0.173 (4,40) 0.165 (4,20) 0.150 (3,80) 0.032 (0,80) 0.016 (0,40) 0.071 (1,80) R 0.035 (0,90) 0.071 (1,8) 0.110 (2,80) 0.016 (0,40) 0.189 (4,80) 0.173 (4,40) 0.029 (0,75) 0.079 (2,00) 0.039 (1,00) 0.027 (0,70) 0.102 (2,6) 0.026 (0,65) 0.630 (16,00) 0.531 (13,50) 0.018 (0,45) 0.018 (0,45) 0.079 (2,00) 0.079 (2,00) Figure 7. Package Configuration NOTES: A. B. C. D. E. All linear dimensions are in inches (millimeters). This drawing is subject to change without notice. All dimensions apply before solder dip. Package body is a clear nonfilled optically transparent material Index of refraction of clear plastic is 1.55. Copyright 2001, TAOS Inc. 6 www.taosinc.com TSL250R, TSL251R, TSL252R LIGHTTOVOLTAGE OPTICAL SENSORS TAOS028A – MAY 2001 PRODUCTION DATA — information in this document is current at publication date. Products conform to specifications in accordance with the terms of Texas Advanced Optoelectronic Solutions, Inc. standard warranty. Production processing does not necessarily include testing of all parameters. NOTICE Texas Advanced Optoelectronic Solutions, Inc. (TAOS) reserves the right to make changes to the products contained in this document to improve performance or for any other purpose, or to discontinue them without notice. Customers are advised to contact TAOS to obtain the latest product information before placing orders or designing TAOS products into systems. TAOS assumes no responsibility for the use of any products or circuits described in this document or customer product design, conveys no license, either expressed or implied, under any patent or other right, and makes no representation that the circuits are free of patent infringement. TAOS further makes no claim as to the suitability of its products for any particular purpose, nor does TAOS assume any liability arising out of the use of any product or circuit, and specifically disclaims any and all liability, including without limitation consequential or incidental damages. TEXAS ADVANCED OPTOELECTRONIC SOLUTIONS, INC. PRODUCTS ARE NOT DESIGNED OR INTENDED FOR USE IN CRITICAL APPLICATIONS IN WHICH THE FAILURE OR MALFUNCTION OF THE TAOS PRODUCT MAY RESULT IN PERSONAL INJURY OR DEATH. USE OF TAOS PRODUCTS IN LIFE SUPPORT SYSTEMS IS EXPRESSLY UNAUTHORIZED AND ANY SUCH USE BY A CUSTOMER IS COMPLETELY AT THE CUSTOMER’S RISK. TAOS, the TAOS logo, and Texas Advanced Optoelectronic Solutions are trademarks of Texas Advanced Optoelectronic Solutions Incorporated. www.taosinc.com Copyright 2001, TAOS Inc. 7 TSL250R, TSL251R, TSL252R LIGHTTOVOLTAGE OPTICAL SENSORS TAOS028A – MAY 2001 Copyright 2001, TAOS Inc. 8 www.taosinc.com