ISL29102 ® Data Sheet July 15, 2010 Low Power Ambient Light-to-Voltage Non-Linear Converter Features • Square Root Voltage Output The ISL29102 is a low cost light-to-voltage silicon optical sensor combining a photodiode array, a non-linear current amplifier and a micro-power op amp on a single monolithic IC. Similar to human eyes, the photodiode array has peak sensitivity at 550nm and spans from 400nm to 600nm, 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 minimizes the effect of temperature dependent leakage currents in the absence of light, improving the light sensitivity at low lux levels while maintaining excellent sensitivity at low lux levels. The built-in 1µA op amp gives the ISL29102 an output voltage driving advantage for heavier loads. The ISL29102 is housed in an ultra compact 2mmx2.1mm ODFN plastic case surface mount package. Operation is rated from -40°C to +85°C. Ordering Information PART NUMBER (Notes 2, 3) PACKAGE (Pb-Free) ISL29102IROZ-T7 (Note 1) 6 Ld ODFN (Tape and Reel) ISL29102IROZ-EVALZ Evaluation Board FN6483.1 PKG. DWG. # L6.2x2.1 • 0.3 lux to 10,000 lux Range • 1.8V to 3.3V Supply Range • Close to Human Eye Spectral Response • Fast Response Time • Internal Temperature Compensation • Good IR Rejection • Low Supply Current • Operating Temperature Range -40°C to +85°C • 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 Related Literature • See AN1422, “Light Sensor Applications” Simplified Block Diagram VDD 1 NOTES: 1. Please refer to TB347 for details on reel specifications. 2. 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 Pbfree peak reflow temperatures that meet or exceed the Pb-free requirements of IPC/JEDEC J STD-020. 3. For Moisture Sensitivity Level (MSL), please see device information page for ISL29102. For more information on MSL please see techbrief TB363. 1 LIGHT DATA PROCESS GND 2 CURRENT AMPLIFIER + VOUT 6 OUTPUT CURRENT α √LIGHT INTENSITY PHOTODIODE ARRAY 4 REXT 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, 2010. All Rights Reserved. All other trademarks mentioned are the property of their respective owners. ISL29102 Pinout ISL29102 (6 LD ODFN) TOP VIEW VDD 1 GND 2 6 VOUT PD NC 3 5 NC 4 REXT Pin Descriptions PIN NUMBER PIN NAME 1 VDD Supply (1.8V to 3.3V). 2 GND Ground 3 NC 4 REXT 5 NC 6 VOUT - PD 2 PIN DESCRIPTION No connect Connected to an external resistor to GND setting the light-to-voltage scaling constant. No connect Voltage Output. Thermal Pad. Thermal pad can be connected to GND or electrically isolated. FN6483.1 July 15, 2010 ISL29102 Absolute Maximum Ratings (TA = +25°C) Thermal Information Supply Voltage Between VDD and GND . . . . . . . . . . . . . . . . . . 3.6V REXT . . . . . . . . . . . . . . . . . . . . . . . . (-0.5V + GND) to (0.5V + VDD) VOUT . . . . . . . . . . . . . . . . . . . . . . . . (-0.5V + GND) to (0.5V + VDD) VOUT Short Circuit Current . . . . . . . . . . . . . . . . . . . . . . . . . . <10mA ESD Rating Human Body Model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3kV Machine Model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .300V Thermal Resistance (Typical) θJA (°C/W) 6 Lead ODFN (Note 4) . . . . . . . . . . . . . . . . . . . . . . . 88 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. NOTE: 4. θJA is measured in free air with the component mounted on a high effective thermal conductivity test board with “direct attach” features. See Tech Brief TB379. 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, REXT = 100kΩ, no load at VOUT, green LED light, unless otherwise specified. PARAMETER E DESCRIPTION CONDITION Range of Input Light Intensity for Square Root Relationship to be Held VDD Operating Supply Voltage IDD Supply Current 1.8 µA E = 1,000 lux 10 VDARK Voltage Output in the absence of light E = 0 lux, REXT = 10MΩ ΔVOUT Output Voltage Variation Over Three Light Sources: Fluorescent, Incandescent and Halogen PSRR Power Supply Rejection Ratio tF tD tS Fall Time Delay Time for Rising Edge Delay Time for Falling Edge V 3.5 E = 1000 lux Rise Time 3.3 E = 100 lux Light-to-Voltage Accuracy Maximum Output Voltage Swing Lux µA VOUT1 VO-MAX UNIT 0.65 E = 100 lux Maximum Output Compliance Voltage at 95% of Nominal Output MAX E = 0 lux Light-to-Voltage Accuracy VO-CMPL TYP 0.3 - 10k VOUT0 tR MIN E = 100 lux, VDD = 1.8V to 3.6V 15 0.185 0.460 µA V 0.580 0.680 V 20 50 mV 10 % 2.5 mV/V VDD - 0.7V V VDD V E = 0 lux to 300 lux 68 µs E = 0 lux to 1000 lux 68 µs E = 300 lux to 0 lux 1830 µs E = 1000 lux to 0 lux 970 us E = 0 lux to 300 lux 352 µs E = 0 lux to 1000 lux 145 µs E = 300 lux to 0 lux 22 µs E = 1000 lux to 0 lux 22 µs ISC Short Circuit Current of Op Amp ±11 mA SR Slew Rate of Op Amp ±10 V/ms Offset Voltage of Op Amp ±1.2 mV VOS 3 FN6483.1 July 15, 2010 ISL29102 POWER SUPPLY OR SOURCE METER INPUT LIGHT VDD 10% ISL29102 FUNCTION GENERATOR 90% tR tS tF% 90% VOUT 10% OUTPUT REXT tD FIGURE 2. TIMING DIAGRAM FIGURE 1. TEST CIRCUIT FOR RISE/FALL TIME MEASUREMENT Typical Performance Curves 1.2 HUMAN EYE RESPONSE NORMALIZED LIGHT INTENSITY NORMALIZED RESPONSE 1.2 1.0 0.8 0.6 LIGHT SENSOR RESPONSE 0.4 0.2 0.0 -0.2 300 400 600 800 1.0k 1.0 SUN 0.8 HALOGEN 0.6 INCANDESCENT FLUORESCENT 0.4 0.2 0 300 1.1k 400 500 600 700 800 900 1000 1100 WAVELENGTH (nm) WAVELENGTH (nm) FIGURE 4. SPECTRUM OF LIGHT SOURCES FIGURE 3. SPECTRAL RESPONSE RADIATION PATTERN LUMINOSITY 30° ANGLE 40° 20° 10° 0° 10° 20° 30° 40° 50° 50° 60° 60° 70° 70° 80° 90° 80° 0.2 0.4 0.6 0.8 RELATIVE SENSITIVITY 90° 1.0 FIGURE 5. RADIATION PATTERN 4 FN6483.1 July 15, 2010 ISL29102 Typical Performance Curves (Continued) 0.7 4.000 VDD = 3V OUTPUT VOLTAGE (V) OUTPUT VOLTAGE (V) 0.400 0.040 FLUORESCENT 0.004 VDD = 3V 0.6 HALOGEN REXT = 40kΩ INCANDESCENT REXT = 100kΩ HALOGEN 0.5 0.4 0.3 0.2 FLUORESCENT INCANDESCENT 0.1 4x10-4 0.1 1 10 100 1000 0.0 10000 0 100 200 300 400 500 600 700 800 900 1000 LIGHT INTENSITY (Lux) LIGHT INTENSITY (LUX) FIGURE 7. OUTPUT VOLTAGE vs LIGHT INTENSITY FIGURE 6. OUTPUT VOLTAGE vs LIGHT INTENSITY 0.8 1.8 VDD = 3V 1.6 REXT = 1MΩ 1.4 1.2 1.0 0.8 FLUORESCENT 0.6 INCANDESCENT 0.4 REXT = 1MΩ 0.6 HALOGEN 0.5 0.4 0.3 0.2 FLUORESCENT INCANDESCENT 0.1 0.2 0 VDD = 3V 0.7 HALOGEN OUTPUT VOLTAGE (V) OUTPUT VOLTAGE (V) 2.0 0 10 20 30 40 50 60 70 80 90 0 100 0 1 2 LIGHT INTENSITY (LUX) 6 7 8 9 10 FIGURE 9. OUTPUT VOLTAGE vs LIGHT INTENSITY 0.30 1000.00 0.25 100.00 OUTPUT VOLTAGE (V) DELAY TIME BEFORE RISING 10.00 1.00 RISE TIME 0.1 10 100 1000 LUX CHANGE FROM/TO 0 LUX (LUX) FIGURE 10. TRANSIENT TIME vs LUX CHANGE FROM/TO 0 LUX 5 0.025 REXT = 10MΩ 0.20 0.15 0.10 0.005 0.05 0.00 DELAY TIME BEFORE FALLING 1 VDD = 3V -0.05 0.000 -50 -40 -30 -20 -10 0 EQUIVALENT INPUT LIGHT (LUX) FALL TIME TRANSIENT TIME (ms) 5 LIGHT INTENSITY (LUX) FIGURE 8. OUTPUT VOLTAGE vs LIGHT INTENSITY 0.01 4 3 10 20 30 40 50 60 70 80 90 TEMPERATURE (°C) FIGURE 11. OUTPUT VOLTAGE vs TEMPERATURE AT 0 LUX FN6483.1 July 15, 2010 ISL29102 Typical Performance Curves (Continued) 1.20 1.10 NORMALIZED OUTPUT VOLTAGE VDD = 3V SUPPLY CURRENT (µA) REXT = 10MΩ 1.00 NO LOAD 0.90 0.80 1000 Lux 1.00 300 Lux 0.95 0.90 0.85 1.010 VDD = 3V FLUORESCENT LIGHT 1000 Lux 7 9 5 300 Lux 3 REXT = 100kΩ NO LOAD 1 -50 -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 TEMPERATURE (°C) NORMALIZED OUTPUT VOLTAGE SUPPLY CURRENT (µA) 1.05 FIGURE 13. NORMALIZED OUTPUT VOLTAGE vs TEMPERATURE 13 11 1.10 0.80 -50 -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 TEMPERATURE (°C) -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 FLUORESCENT LIGHT 1000 Lux 1.005 1.000 0.995 VDD = 3V REXT = 100kΩ 0.990 1.5 2.0 2.5 3.0 SUPPLY VOLTAGE (V) 3.5 4.0 FIGURE 15. NORMALIZED OUTPUT VOLTAGE vs SUPPLY VOLTAGE FIGURE 14. SUPPLY CURRENT vs TEMPERATURE 9.6 SUPPLY CURRENT FLUORESCENT LIGHT 1000 Lux LIGHT INTENSITY VDD = 3V, REXT = 100kΩ LIGHT INTENSITY RISES FROM 0 LUX TO 300 LUX AND FALLS FROM 300 LUX TO 0 LUX WITH WHITE LED 9.4 9.2 VOUT 0V REXT = 100kΩ NO LOAD 9.0 1.5 2.0 2.5 3.0 SUPPLY VOLTAGE (V) 3.5 FIGURE 16. SUPPLY CURRENT vs SUPPLY VOLTAGE 6 4.0 FIGURE 17. TRANSIENT RESPONSE OF ISL29102 TO CHANGE IN LIGHT INTENSITY FN6483.1 July 15, 2010 ISL29102 Application Information Light-to-Voltage Conversion The ISL29102 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 V OUT = ----------------------- E × R EXT 100lux (EQ. 1) In Equation 1, VOUT is the output voltage, E is the light intensity and REXT is the value of the external resistor. The REXT is used to set the light-to-voltage scaling constant. The compliance of the ISL29102's output circuit may result in premature saturation when an excessively large REXT is used. The output compliance voltage is 700mV below the supply voltage as listed in VO-MAX of the “Electrical Specifications” table on page 3. Optical Sensor Location Outline The green area in Figure 18 shows the optical sensor location outline of ISL29102. Along the pinout 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 pinout 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. 2.00mm SENSOR OFFSET 2.10mm 0.46mm 0.19mm 0.39mm FIGURE 18. 6 LD ODFN SENSOR LOCATION OUTLINE 7 FN6483.1 July 15, 2010 ISL29102 Revision History The revision history provided is for informational purposes only and is believed to be accurate, but not warranted. Please go to web to make sure you have the latest Rev. DATE REVISION CHANGE 12/12/08 FN6483.1 Added MSL Note 3 to “Ordering Information” to page 1. Corrected Eval board name from ISL29102IROZEVALZ to ISL29102IROZ-EVALZ in “Ordering Information” on page 1. Added “Related Literature” on page 1 per new data sheet standards. Updated Theta JA in “Thermal Information” on page 3 from 90C/W to 88C/W per ASYD in Intrepid. Added Note 4. Revised VO-MAX spec in “Electrical Specifications” table on page 3 from: Description: Maximum Output Compliance voltage at 95% of nominal output TYP: VDD - 0.7V To: Description: Maximum Output Voltage Swing TYP: removed (was VDD - 0.7V) MAX: added "VDD" Added new spec to “Electrical Specifications” table on page 3 as follows: VO-CMPL Description: Maximum Output Compliance voltage at 95% of nominal output TYP: VDD - 0.7V Updated package outline drawing L6.2x2.1 on page 9 to most recent revision. Changes to POD were: Changing the way we dimension the solder pad recommendation on the PODs. Changes inc: Bottom View: Added dimension callouts for solder pad Land Pattern: Added package outline and package outline dimensions. Added lead width of 6x0.30±0.05 and note 4 callout to bottom view Increased the size of the pin 1 shaded area Added “Revision History” on page 8 & “Products” on page 8 per new data sheet standards. 7/1/08 FN6483.0 Initial release. Products Intersil Corporation is a leader in the design and manufacture of high-performance analog semiconductors. The Company's products address some of the industry's fastest growing markets, such as, flat panel displays, cell phones, handheld products, and notebooks. Intersil's product families address power management and analog signal processing functions. Go to www.intersil.com/products for a complete list of Intersil product families. *For a complete listing of Applications, Related Documentation and Related Parts, please see the respective device information page on intersil.com: ISL29102 To report errors or suggestions for this datasheet, please go to www.intersil.com/askourstaff FITs are available from our website at http://rel.intersil.com/reports/search.php 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 8 FN6483.1 July 15, 2010 ISL29102 Package Outline Drawing L6.2x2.1 6 LEAD OPTICAL DUAL FLAT NO-LEAD PLASTIC PACKAGE (ODFN) Rev 2, 6/10 2.10 A 6 PIN #1 INDEX AREA B 6 PIN 1 INDEX AREA 1 0.65 1.35 2.00 1.30 REF 4 6X 0.30±0.05 (4X) 0.10 0.10 M C A B 0.65 TOP VIEW 6x0.35 ± 0.05 BOTTOM VIEW 2.50 PACKAGE OUTLINE 2.10 SEE DETAIL "X" 0.65 0.10 C (4x0.65) C BASE PLANE SEATING PLANE 0.08 C SIDE VIEW (1.35) (6x0.30) C (6x0.20) 0 . 2 REF 5 0 . 00 MIN. 0 . 05 MAX. (6x0.55) TYPICAL RECOMMENDED LAND PATTERN DETAIL "X" NOTES: 1. Dimensions are in millimeters. Dimensions in ( ) for Reference Only. 2. Dimensioning and tolerancing conform to ASME Y14.5m-1994. 3. Unless otherwise specified, tolerance : Decimal ± 0.05 4. Dimension 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. 9 FN6483.1 July 15, 2010