ISL29009

® ISL29009 Data Sheet July 1, 2008 FN6484.0 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. 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 Simplified Block Diagram VDD 1 Pinout ISL29009 (6 LD ODFN) TOP VIEW IOUT 6 VDD 1 GND 2 NC 3 THERMAL PAD* 6 IOUT 5 NC 4 EN LIGHT DATA PROCESS CURRENT AMPLIFIER OUTPUT CURRENT α √LIGHT INTENSITY GND 2 PHOTODIODE ARRAY EN 4 *THERMAL PAD CAN BE CONNECTED TO GND OR ELECTRICALLY ISOLATED Ordering Information PART NUMBER (Note) ISL29009IROZ-T7* TEMP. RANGE (°C) -40 to +85 PACKAGE (Pb-free) 6 Ld ODFN PKG. DWG. # L6.2x2.1 Pin Descriptions PIN NUMBER 1 2 3 4 5 6 PIN NAME VDD GND NC EN NC IOUT DESCRIPTION Supply, 1.8V to 3.3V Ground No connect Active LO enable No connect Current output *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 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) 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 Information 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 PARAMETER E VDD IDD VDD = 3V, TA = +25°C, EN = 0, RL = 100kΩ at IOUT pin, green LED light, unless otherwise specified. DESCRIPTION CONDITION MIN TYP 0.3 to 10k 1.8 E = 1000 lux E = 100 lux E = 0 lux 9 3 0.25 250 1.8 4.6 5.7 2 10 E = 1000 lux RL = 100kΩ, E = 300 lux from 0 Lux RL = 100kΩ, E = 1000 lux from 0 Lux VDD - 0.2 70 20 2410 1290 600 280 75 5 0.5 VDD - 0.5 V EN = 0V V EN = 3V 1 1 6.8 5 350 3.3 14 MAX UNIT lux V µA µA µA nA µA µA nA % V µs µs µs µs µs µs µs µs V V nA nA Range of Input Light Intensity Power Supply Range Supply Current ISD IOUT1 IOUT2 IDARK ΔIOUT VO-MAX tR Supply Current when Shut Down Light-to-Current Accuracy Light-to-Current Accuracy Dark Current Output in the Absence of Light Output Current Variation Over Three Light Sources: Fluorescent, Incandescent and Halogen IOUT Max Output Compliance Voltage at 95% of Nominal Output IOUT Rise Time (Note 1) EN = VDD E = 100 lux E = 1000 lux E = 0 lux, RL = 10MΩ tF IOUT Fall Time (Note 1) RL = 100kΩ, E = 300 lux to 0 Lux RL = 100kΩ, E = 1000 lux to 0 Lux tD IOUT Delay Time for Rising Edge (Note 1) RL = 100kΩ, E = 300 lux from 0 Lux RL = 100kΩ, E = 1000 lux from 0 Lux tS IOUT Delay Time for Falling Edge (Note 1) RL = 100kΩ, E = 300 lux to 0 Lux RL = 100kΩ, E = 1000 lux to 0 Lux VLO VHI ILO IHI Maximum Voltage at EN pin to Enable Minimum Voltage at EN pin to Disable Input Current at EN pin Input Current at EN pin 2 FN6484.0 July 1, 2008 ISL29009 Electrical Specifications PARAMETER tEN tDIS NOTE: 1. Switching time measurement is based on Figures 1 and 2. Enable Time Disable Time VDD = 3V, TA = +25°C, EN = 0, RL = 100kΩ at IOUT pin, green LED light, unless otherwise specified. (Continued) DESCRIPTION CONDITION RL = 100kΩ, E = 100 lux RL = 100kΩ, E = 100 lux MIN TYP 20 200 MAX UNIT µs µs POWER SUPPLY OR SOURCE METER VDD INPUT LIGHT 10% FUNCTION GENERATOR ISL29009 RL OUTPUT VOUT 90% tR tS 90% 10% tF% tD FIGURE 1. TEST CIRCUIT FOR RISE/FALL TIME MEASUREMENT FIGURE 2. TIMING DIAGRAM Typical Performance Curves 1.2 NORMALIZED RESPONSE 1.0 0.8 0.6 0.4 0.2 0.0 -0.2 400 600 800 WAVELENGTH (nm) 1.0k LIGHT SENSOR RESPONSE NORMALIZED LIGHT INTENSITY HUMAN EYE RESPONSE 1.2 FLUORESCENT 1.0 0.8 0.6 0.4 WLED 0.2 0 300 INCANDESCENT SUN HALOGEN 400 500 600 700 800 WAVELENGTH (nm) 900 1000 1100 FIGURE 3. SPECTRAL RESPONSE RADIATION PATTERN 20° LUMINOSITY 30° ANGLE 40° 50° 60° 70° 80° 90° 10° 0° 10° 20° FIGURE 4. SPECTRUM OF LIGHT SOURCES 30° 40° 50° 60° 70° 80° 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) 100 HALOGEN 10 7 6 OUTPUT CURRENT (µA) 5 4 3 2 INCANDESCENT 1 0.01 0.1 0 0 100 200 300 400 500 600 700 800 900 1000 LIGHT INTENSITY (Lux) FLUORESCENT HALOGEN OUTPUT CURRENT (µA) 1 FLUORESCENT 0.1 INCANDESCENT 1 10 100 1000 10000 LIGHT INTENSITY (LUX) FIGURE 6. OUTPUT CURRENT vs LIGHT INTENSITY FIGURE 7. OUTPUT CURRENT vs LIGHT INTENSITY 2.0 1.8 OUTPUT CURRENT (µA) OUTPUT CURRENT (µA) 1.6 1.4 1.2 1.0 0.8 0.6 0.4 0.2 0 0 10 20 30 40 50 60 70 80 90 100 INCANDESCENT FLUORESCENT HALOGEN 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0.1 0 0 1 INCANDESCENT 2 3 4 5 6 7 8 9 10 FLUORESCENT HALOGEN LIGHT INTENSITY (LUX) LIGHT INTENSITY (LUX) FIGURE 8. OUTPUT CURRENT vs LIGHT INTENSITY FIGURE 9. OUTPUT CURRENT vs LIGHT INTENSITY 1000 FALL TIME DELAY TIME BEFORE RISING RISE TIME 10 30 EQUIVALENT INPUT LIGHT (LUX) 25 OUTPUT CURRENT (nA) 20 15 10 5 0 0.000 -50 -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 TEMPERATURE (°C) 0.005 0.025 TRANSIENT TIME ( ms) 100 1 DELAY TIME BEFORE FALLING 0.1 0.01 1 10 100 LUX CHANGE FROM 0 LUX (LUX) 1000 -5 FIGURE 10. TRANSIENT TIME vs LUX CHANGE FROM 0 LUX FIGURE 11. OUTPUT CURRENT vs TEMPERATURE AT 0 LUX 4 FN6484.0 July 1, 2008 ISL29009 Typical Performance Curves (Continued) 0.35 NORMALIZED OUTPUT CURRENT 0.30 SUPPLY CURRENT (µA) 0.25 0.20 0.15 0.10 0.05 0.00 -50 -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 TEMPERATURE (°C) 1.20 1.15 1.10 1.05 1.00 0.95 0.90 0.85 0.80 -50 -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 TEMPERATURE (°C) 1000 Lux 300 Lux VDD = 3V FLUORESCENT LIGHT FIGURE 12. SUPPLY CURRENT vs TEMPERATURE AT 0 LUX FIGURE 13. NORMALIZED OUTPUT CURRENT vs TEMPERATURE 12 1000 Lux 10 8 6 4 300 Lux 2 0 -50 -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 TEMPERATURE (°C) NORMALIZED OUTPUT CURRENT VDD = 3V FLUORESCENT LIGHT 1.010 FLUORESCENT LIGHT 1000 Lux 1.005 SUPPLY CURRENT (µA) 1.000 0.995 0.990 1.5 2.0 2.5 3.0 SUPPLY VOLTAGE (V) 3.5 4.0 FIGURE 14. SUPPLY CURRENT vs TEMPERATURE FIGURE 15. NORMALIZED OUTPUT CURRENT vs SUPPLY VOLTAGE 8.6 8.5 SUPPLY CURRENT 8.4 8.3 8.2 8.1 8.0 1.5 VOUT 0V 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 2.0 2.5 3.0 SUPPLY VOLTAGE (V) 3.5 4.0 FIGURE 16. SUPPLY CURRENT vs SUPPLY VOLTAGE FIGURE 17. TRANSIENT RESPONSE OF ISL29009 TO CHANGE IN LIGHT INTENSITY 5 FN6484.0 July 1, 2008 ISL29009 Application Information 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). 1.8 μ A I OUT = ---------------------- E 100lux (EQ. 1) 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. 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. 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: 1.8 μ A V OUT = I OUT × R L = ---------------------- E × R L 100lux (EQ. 2) 2.10mm 29009 SENSOR OFFSET 2.00mm 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 1 . 30 REF (4X) 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) BASE PLANE ( 6X 0 . 30 ) SIDE VIEW SEATING PLANE 0.08 C C ( 6X 0 . 55 ) C (1 . 95) 0 . 00 MIN. 0 . 05 MAX. DETAIL "X" 0 . 2 REF 5 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