ISL29009 ® Data Sheet July 1, 2008 Non-Linear Output Current, Low Power Ambient Light Photo Detect IC The ISL29009 is a light-to-current silicon optical sensor combining a photodiode and current amplifiers on a single monolithic IC. Similar to human eyes, the photodiode has peak sensitivity at 550nm and spans from 400nm to 700nm, rejecting UV light and IR light. The input luminance range is from 0.3 lux to 10,000 lux. The integrated non-linear current amplifier boosts and converts the photodiode signal in a square root fashion, extending the light input dynamic range while maintaining excellent sensitivity at dim conditions with low lux levels. The device consumes minimal power over a wide range of ambient lux levels because the current consumption ramps at a square root fashion. A dark current compensation circuit aids the photodiode to minimize temperature dependent leakage currents in the absence of light, improving the light sensitivity at low lux levels. In addition, the ISL29009 has an EN pin that can be used for a polling scheme extending portables’ battery life. The ISL29009 is housed in an ultra compact 2mmx2.1mm ODFN plastic case surface mount package. Operation is rated from -40°C to +85°C. Simplified Block Diagram Features • Non-linear current output • 0.3 lux to 10,000 lux range • Dark current compensation • Temperature compensated • Human eye response • 1.8V to 3.3V supply range • Low supply current • Fast response time • 6 Ld ODFN: 2mmx2.1mmx0.7mm • Pb-free (RoHS compliant) Applications • Display and keypad dimming for: - Mobile devices: smart phone, PDA, GPS - Computing devices: notebook PC, webpod - Consumer devices: LCD-TV, digital picture frame, digital camera • Industrial and medical light sensing Pinout VDD 1 ISL29009 (6 LD ODFN) TOP VIEW LIGHT DATA PROCESS IOUT 6 CURRENT AMPLIFIER 6 IOUT VDD 1 GND 2 OUTPUT CURRENT α √LIGHT INTENSITY THERMAL PAD* NC 3 GND 2 FN6484.0 PHOTODIODE ARRAY EN 4 Ordering Information PART NUMBER (Note) TEMP. RANGE (°C) ISL29009IROZ-T7* -40 to +85 4 EN *THERMAL PAD CAN BE CONNECTED TO GND OR ELECTRICALLY ISOLATED Pin Descriptions PACKAGE (Pb-free) 6 Ld ODFN PIN NUMBER PIN NAME PKG. DWG. # 1 VDD Supply, 1.8V to 3.3V L6.2x2.1 2 GND Ground 3 NC No connect 4 EN Active LO enable 5 NC No connect 6 IOUT *Please refer to TB347 for details on reel specifications. NOTE: These Intersil Pb-free plastic packaged products employ special Pb-free material sets; molding compounds/die attach materials and NiPdAu plate - e4 termination finish, which is RoHS compliant and compatible with both SnPb and Pb-free soldering operations. Intersil Pb-free products are MSL classified at Pb-free peak reflow temperatures that meet or exceed the Pb-free requirements of IPC/JEDEC J STD-020. 1 5 NC DESCRIPTION Current output CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures. 1-888-INTERSIL or 1-888-468-3774 | Intersil (and design) is a registered trademark of Intersil Americas Inc. Copyright © Intersil Americas Inc. 2008. All Rights Reserved. All other trademarks mentioned are the property of their respective owners. ISL29009 Absolute Maximum Ratings (TA = +25°C) Thermal Information Supply Voltage between VDD and GND . . . . . . . . . . . . . . . . . . 3.6V Pin Voltage (IOUT and EN) . . . . . . . . . . . . . . . . . . . . . -0.2V to VDD Maximum Continuous Output Current . . . . . . . . . . . . . . . . . . . . 6mA Operating Temperature . . . . . . . . . . . . . . . . . . . . . . .-40°C to +85°C ESD Rating Human Body Model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2kV Machine Model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .200V Thermal Resistance θJA (°C/W) 6 Ld ODFN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90 Maximum Die Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . +90°C Storage Temperature . . . . . . . . . . . . . . . . . . . . . . . .-40°C to +100°C Operating Temperature . . . . . . . . . . . . . . . . . . . . . . .-40°C to +85°C Pb-free reflow profile . . . . . . . . . . . . . . . . . . . . . . . . . .see link below http://www.intersil.com/data/tb/TB477.pdf CAUTION: Do not operate at or near the maximum ratings listed for extended periods of time. Exposure to such conditions may adversely impact product reliability and result in failures not covered by warranty. IMPORTANT NOTE: All parameters having Min/Max specifications are guaranteed. Typical values are for information purposes only. Unless otherwise noted, all tests are at the specified temperature and are pulsed tests, therefore: TJ = TC = TA Electrical Specifications VDD = 3V, TA = +25°C, EN = 0, RL = 100kΩ at IOUT pin, green LED light, unless otherwise specified. PARAMETER DESCRIPTION E Range of Input Light Intensity VDD Power Supply Range IDD Supply Current CONDITION MIN TYP 0.3 to 10k 1.8 µA E = 0 lux 0.25 µA Light-to-Current Accuracy E = 100 lux 1.8 IOUT2 Light-to-Current Accuracy E = 1000 lux IDARK Dark Current Output in the Absence of Light E = 0 lux, RL = 10MΩ ΔIOUT Output Current Variation Over Three Light Sources: Fluorescent, Incandescent and Halogen VO-MAX IOUT Max Output Compliance Voltage at 95% of Nominal Output E = 1000 lux tR IOUT Rise Time (Note 1) IOUT Delay Time for Falling Edge (Note 1) 14 µA IOUT1 tS V 3 250 IOUT Delay Time for Rising Edge (Note 1) 3.3 E = 100 lux EN = VDD tD lux 9 Supply Current when Shut Down IOUT Fall Time (Note 1) UNIT E = 1000 lux ISD tF MAX 4.6 350 nA µA 5.7 6.8 µA 2 5 nA 10 % VDD - 0.2 V RL = 100kΩ, E = 300 lux from 0 Lux 70 µs RL = 100kΩ, E = 1000 lux from 0 Lux 20 µs RL = 100kΩ, E = 300 lux to 0 Lux 2410 µs RL = 100kΩ, E = 1000 lux to 0 Lux 1290 µs RL = 100kΩ, E = 300 lux from 0 Lux 600 µs RL = 100kΩ, E = 1000 lux from 0 Lux 280 µs RL = 100kΩ, E = 300 lux to 0 Lux 75 µs RL = 100kΩ, E = 1000 lux to 0 Lux 5 µs VLO Maximum Voltage at EN pin to Enable 0.5 V VHI Minimum Voltage at EN pin to Disable VDD - 0.5 V ILO Input Current at EN pin V EN = 0V 1 nA IHI Input Current at EN pin V EN = 3V 1 nA 2 FN6484.0 July 1, 2008 ISL29009 Electrical Specifications VDD = 3V, TA = +25°C, EN = 0, RL = 100kΩ at IOUT pin, green LED light, unless otherwise specified. (Continued) PARAMETER DESCRIPTION CONDITION MIN TYP MAX UNIT tEN Enable Time RL = 100kΩ, E = 100 lux 20 µs tDIS Disable Time RL = 100kΩ, E = 100 lux 200 µs NOTE: 1. Switching time measurement is based on Figures 1 and 2. POWER SUPPLY OR SOURCE METER INPUT LIGHT VDD 10% 90% tR ISL29009 FUNCTION GENERATOR tS VOUT tF% 90% 10% RL OUTPUT tD FIGURE 2. TIMING DIAGRAM FIGURE 1. TEST CIRCUIT FOR RISE/FALL TIME MEASUREMENT Typical Performance Curves 1.2 1.2 NORMALIZED LIGHT INTENSITY NORMALIZED RESPONSE HUMAN EYE RESPONSE 1.0 0.8 0.6 LIGHT SENSOR RESPONSE 0.4 0.2 0.0 600 800 WAVELENGTH (nm) INCANDESCENT 0.8 SUN HALOGEN 0.6 0.4 WLED 0.2 0 300 -0.2 400 FLUORESCENT 1.0 1.0k 400 500 600 700 800 WAVELENGTH (nm) 900 1000 1100 FIGURE 4. SPECTRUM OF LIGHT SOURCES FIGURE 3. SPECTRAL RESPONSE RADIATION PATTERN 20° LUMINOSITY 30° ANGLE 40° 10° 0° 10° 20° 30° 40° 50° 50° 60° 60° 70° 70° 80° 80° 90° 0.2 0.4 0.6 0.8 RELATIVE SENSITIVITY 90° 1.0 FIGURE 5. RADIATION PATTERN 3 FN6484.0 July 1, 2008 ISL29009 Typical Performance Curves (Continued) 7 6 HALOGEN OUTPUT CURRENT (µA) OUTPUT CURRENT (µA) 100 10 1 FLUORESCENT 0.1 INCANDESCENT HALOGEN 5 4 3 2 FLUORESCENT INCANDESCENT 1 0.01 0.1 1 10 100 1000 0 10000 0 100 200 300 400 500 600 700 800 900 1000 LIGHT INTENSITY (Lux) LIGHT INTENSITY (LUX) FIGURE 7. OUTPUT CURRENT vs LIGHT INTENSITY FIGURE 6. OUTPUT CURRENT vs LIGHT INTENSITY 2.0 0.8 0.7 HALOGEN 1.6 OUTPUT CURRENT (µA) OUTPUT CURRENT (µA) 1.8 1.4 1.2 1.0 0.8 FLUORESCENT 0.6 INCANDESCENT 0.4 0 10 20 30 40 50 60 70 80 90 0.3 0.2 FLUORESCENT INCANDESCENT 0 1 2 3 4 5 6 7 8 10 9 LIGHT INTENSITY (LUX) FIGURE 8. OUTPUT CURRENT vs LIGHT INTENSITY FIGURE 9. OUTPUT CURRENT vs LIGHT INTENSITY 30 1000 FALL TIME DELAY TIME BEFORE RISING 25 OUTPUT CURRENT (nA) 100 RISE TIME 10 1 DELAY TIME BEFORE FALLING 0.1 20 15 10 10 100 LUX CHANGE FROM 0 LUX (LUX) 1000 FIGURE 10. TRANSIENT TIME vs LUX CHANGE FROM 0 LUX 4 0.005 5 0 1 0.025 -5 0.000 EQUIVALENT INPUT LIGHT (LUX) TRANSIENT TIME ( ms) 0.4 0 100 LIGHT INTENSITY (LUX) 0.01 HALOGEN 0.5 0.1 0.2 0 0.6 -50 -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 TEMPERATURE (°C) FIGURE 11. OUTPUT CURRENT vs TEMPERATURE AT 0 LUX FN6484.0 July 1, 2008 ISL29009 Typical Performance Curves (Continued) 1.20 NORMALIZED OUTPUT CURRENT 0.35 SUPPLY CURRENT (µA) 0.30 0.25 0.20 0.15 0.10 0.05 1.05 1000 Lux 1.00 300 Lux 0.95 0.90 0.85 FIGURE 13. NORMALIZED OUTPUT CURRENT vs TEMPERATURE 1.010 VDD = 3V FLUORESCENT LIGHT 10 NORMALIZED OUTPUT CURRENT 12 SUPPLY CURRENT (µA) 1.10 0.80 -50 -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 TEMPERATURE (°C) 0.00 -50 -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 TEMPERATURE (°C) FIGURE 12. SUPPLY CURRENT vs TEMPERATURE AT 0 LUX VDD = 3V FLUORESCENT LIGHT 1.15 1000 Lux 8 6 4 300 Lux 2 0 -50 -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 TEMPERATURE (°C) FLUORESCENT LIGHT 1000 Lux 1.005 1.000 0.995 0.990 1.5 2.0 2.5 3.0 SUPPLY VOLTAGE (V) 3.5 4.0 FIGURE 15. NORMALIZED OUTPUT CURRENT vs SUPPLY VOLTAGE FIGURE 14. SUPPLY CURRENT vs TEMPERATURE 8.6 SUPPLY CURRENT 8.5 FLUORESCENT LIGHT 1000 Lux LIGHT INTENSITY VDD = 3V, RL = 100kΩ LIGHT INTENSITY RISES FROM 0 LUX TO 300 LUX AND FALLS FROM 300 LUX TO 0 LUX WITH WHITE LED 8.4 8.3 8.2 VOUT 0V 8.1 8.0 1.5 2.0 2.5 3.0 SUPPLY VOLTAGE (V) 3.5 4.0 FIGURE 16. SUPPLY CURRENT vs SUPPLY VOLTAGE 5 FIGURE 17. TRANSIENT RESPONSE OF ISL29009 TO CHANGE IN LIGHT INTENSITY FN6484.0 July 1, 2008 ISL29009 Application Information Here, VOUT is the output voltage and RL is the value of the load resistor added. The compliance of the ISL29009's output circuit may result in premature saturation of the output current and voltage when an excessively large RL is used. The output compliance voltage is 200mV below the supply voltage as listed in VO-MAX of the “Electrical Specifications” table on page 2. Light-to-Current and Voltage Conversion The ISL29009 has responsiveness that is a square-root function of the light intensity intercepted by the photodiode in lux. Because the photodiode has a responsivity that resembles the human eye, conversion rate is independent of the light source (fluorescent light, incandescent light or direct sunlight). 1.8μA I OUT = ----------------------- E 100lux Optical Sensor Location Outline The green area in Figure 18 shows the optical sensor location outline of ISL29009. Along the pin-out direction, the center line (CL) of the sensor coincides with that of the packaging. The sensor width in this direction is 0.39mm. Perpendicular to the pin-out direction, the CL of the sensor has an 0.19mm offset from the CL of packaging away from pin-1. The sensor width in this direction is 0.46mm. (EQ. 1) Here, IOUT is the output current in µA, and E is the input light in lux. A load resistor RL is added to convert IOUT into VOUT. The output voltage can be expressed in Equation 2: 1.8μA V OUT = I OUT × R L = ----------------------- E × R L 100lux (EQ. 2) 2.10mm 2.00mm SENSOR OFFSET 29009 0.46mm 0.19mm 0.39mm FIGURE 18. 6 LD ODFN SENSOR LOCATION OUTLINE All Intersil U.S. products are manufactured, assembled and tested utilizing ISO9000 quality systems. Intersil Corporation’s quality certifications can be viewed at www.intersil.com/design/quality Intersil products are sold by description only. Intersil Corporation reserves the right to make changes in circuit design, software and/or specifications at any time without notice. Accordingly, the reader is cautioned to verify that data sheets are current before placing orders. Information furnished by Intersil is believed to be accurate and reliable. However, no responsibility is assumed by Intersil or its subsidiaries for its use; nor for any infringements of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Intersil or its subsidiaries. For information regarding Intersil Corporation and its products, see www.intersil.com 6 FN6484.0 July 1, 2008 ISL29009 Package Outline Drawing L6.2x2.1 6 LEAD OPTICAL DUAL FLAT NO-LEAD PLASTIC PACKAGE (ODFN) Rev 0, 9/06 2.10 A 6 PIN 1 INDEX AREA B 1 6 PIN 1 INDEX AREA 0.65 2.00 1 . 35 (4X) 1 . 30 REF 0.10 6X 0 . 30 ± 0 . 05 0 . 65 TOP VIEW 0.10 M C A B 6X 0 . 35 ± 0 . 05 BOTTOM VIEW (0 . 65) MAX 0.75 SEE DETAIL "X" 0.10 C (0 . 65) (1 . 35) C BASE PLANE ( 6X 0 . 30 ) SEATING PLANE 0.08 C SIDE VIEW ( 6X 0 . 55 ) C 0 . 2 REF 5 (1 . 95) 0 . 00 MIN. 0 . 05 MAX. DETAIL "X" TYPICAL RECOMMENDED LAND PATTERN NOTES: 1. Dimensions are in millimeters. Dimensions in ( ) for Reference Only. 2. Dimensioning and tolerancing conform to AMSE Y14.5m-1994. 3. Unless otherwise specified, tolerance : Decimal ± 0.05 4. Dimension b applies to the metallized terminal and is measured between 0.15mm and 0.30mm from the terminal tip. 5. Tiebar shown (if present) is a non-functional feature. 6. The configuration of the pin #1 identifier is optional, but must be located within the zone indicated. The pin #1 identifier may be either a mold or mark feature. 7 FN6484.0 July 1, 2008