DATASHEET Low Power, <100 Lux Optimized, Analog Output Ambient Light Sensor ISL76671 The ISL76671 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 the human eye, the photodiode array has peak sensitivity at 550nm and spans the wavelength range 400nm to 600nm, rejecting UV and IR light. The input luminance range is from 0.01 lux to 100 lux. Features • Square root voltage output • 0.01 lux to 100 lux range • 1.8V to 3V supply range • Close to human eye spectral response • Fast response time The integrated non-linear current amplifier boosts and converts the photodiode signal into a square root output format, extending dynamic range while maintaining excellent sensitivity in dimly lit conditions. As such, the part is ideal for measuring incident daylight when mounted behind heavily smoked bezels used around displays or behind mirrors. • Internal temperature compensation The device consumes minimum power. 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. The output gain has been optimized to require a relatively low value external bias resistor that falls within recommended automotive EMI limits. The built-in 1µA op amp gives the ISL76671 an output voltage driving advantage for heavier loads that can drive an ADC directly. • Pb-free (RoHS compliant) The ISL76671 is housed in an ultra compact 2mmx2.1mm ODFN plastic surface mount package. Operation is rated from -40°C to +105°C, Grade 2 per AEC-Q100. • Good IR rejection • Low supply current • Operating temperature range -40°C to +105°C • 6 Ld ODFN: 2mmx2.1mmx0.7mm • AEC-Q100 Qualified Applications • Display backlight control - central info display and instrumentation • Anti-glare mirror systems - specified to operate behind Bezel mounting VDD 1 VOUT LIGHT DATA PROCESS GND 2 CURRENT AMPLIFIER OUTPUT CURRENT a LIGHT INTENSITY + 6 PHOTODIODE ARRAY 4 REXT FIGURE 1. SIMPLIFIED BLOCK DIAGRAM April 20, 2015 FN7716.3 1 CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures. 1-888-INTERSIL or 1-888-468-3774 | Copyright Intersil Americas LLC 2011, 2013, 2015. All Rights Reserved Intersil (and design) is a trademark owned by Intersil Corporation or one of its subsidiaries. All other trademarks mentioned are the property of their respective owners. ISL76671 Pin Configuration ISL76671 (6 LD ODFN) TOP VIEW 6 VOUT VDD 1 GND 2 PAD NC 3 5 NC 4 REXT Pin Descriptions PIN NUMBER PIN NAME PIN DESCRIPTION 1 VDD Voltage Supply (1.8V to 3V). 2 GND Ground 3, 5 NC 4 REXT Connected to an external resistor to GND, setting the light-to-voltage scaling constant. A REXT value of 100kΩis recommended. 6 VOUT Voltage Output. - PAD Thermal Pad. The thermal pad can be connected to GND or electrically isolated. No connect Ordering Information PACKAGE Tape and Reel (RoHS Compliant) PART NUMBER (Notes 1, 2, 3) PKG. DWG. # ISL76671AROZ-T7 6 Ld ODFN (Tape and Reel) L6.2X2.1 ISL76671AROZ-T7A 6 Ld ODFN (Tape and Reel) L6.2X2.1 ISL76671EVAL1Z Evaluation Board 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 Pb-free 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 ISL76671. For more information on MSL please see techbrief TB477. Submit Document Feedback 2 FN7716.3 April 20, 2015 ISL76671 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 (Tested per AEC-Q100-002) . . . . . . . . . . . . . . .2.5kV Machine Model (Tested per AEC-Q100-003) . . . . . . . . . . . . . . . . . . . 250V Charged Device Model (Tested per AEC-Q100-011). . . . . . . . . . . . . . 1kV Latch-up (Tested per AEC-Q100-004, Class II, Level A) . . . . . . . . . . 100mA Thermal Resistance (Typical) JA (°C/W) JC (°C/W) 6 Ld ODFN (Notes 4, 5) . . . . . . . . . . . . . . . . 88 7.94 Maximum Die Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .+105°C Storage Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .-40°C to +105°C Operating Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . .-40°C to +105°C Pb-Free Reflow Profile (*) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . see TB477 *Peak temperature during solder reflow +260°C max 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. NOTES: 4. JA 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. 5. For JC, the “case temp” location is the center of the exposed metal pad on the package underside. Electrical Specifications Unless otherwise noted, all parameter limits are established over the recommended operating conditions: VDD = 3V, TA = -40°C to +105°C, REXT = 100kΩ, no load at VOUT, and green LED light. (Typical values are at TA = +25°C). Boldface limits apply across the operating temperature range, -40°C to +105°C. PARAMETER E DESCRIPTION TEST CONDITIONS MIN (Note 6) Range of Input Light Intensity for Square Root Relationship to be Held VDD Operating Supply Voltage IDD Supply Current TYP 0.01 - 100 1.8 E = 0 lux, -40°C to +60°C 0.7 E = 0 lux, -40°C to +105°C VOUT Light-to-Voltage Accuracy Voltage Output in the Absence of Light Output Voltage Variation Over Three Light Sources: Fluorescent, Incandescent and Halogen PSRR Power Supply Rejection Ratio VO-CMPL Maximum Output Compliance Voltage at 95% of Nominal Output VO-MAX Maximum Output Voltage Swing tR Rise Time Lux 3 V 2 µA 5 µA 35 µA 23 E = 10 lux 0.65 V E = 50 lux 1.35 V E = 0 lux, -40°C to +60°C 1.4 1.85 0.95 E = 0 lux, -40°C to +105°C VOUT UNITS E = 100 lux E = 100 lux VDARK MAX (Note 6) E = 100 lux 2.3 V 20 mV 120 mV 10 % 0.12 mV/V VDD - 0.7V V VDD E = 0 lux to 100 lux 95 V µs tF Fall Time E = 100 lux to 0 lux 155 µs tD Delay Time for Rising Edge E = 0 lux to 100 lux 350 µs tS Delay Time for Falling Edge E = 100 lux to 0 lux 250 µs ISC Short Circuit Current of Op Amp ±12 mA SR Slew Rate of Op Amp 13 V/ms VOS Offset Voltage of Op Amp ±0.9 mV NOTE: 6. Parameters with MIN and/or MAX limits are 100% tested at +25°C, unless otherwise specified. Temperature limits established by characterization and are not production tested. Submit Document Feedback 3 FN7716.3 April 20, 2015 ISL76671 POWER SUPPLY OR SOURCE METER INPUT LIGHT VDD 10% ISL76671 FUNCTION GENERATOR 90% tR tS 90% VOUT 10% tF% OUTPUT REXT tD FIGURE 2. TEST CIRCUIT FOR RISE/FALL TIME MEASUREMENT FIGURE 3. TIMING DIAGRAM Typical Performance Curves VDD = 3V, TA = +25°C, REXT = 100kΩ, no load at VOUT, green LED light, unless otherwise specified. 1.0 HUMAN EYE RESPONSE 0.9 1.0 0.8 0.6 LIGHT SENSOR RESPONSE 0.4 0.2 0.0 -0.2 300 400 600 800 1.0k FLUORESCENT 0.8 NORMALIZED INTENSITY NORMALIZED RESPONSE 1.2 0.7 0.6 HALOGEN 0.5 INCAND SUN 0.4 0.3 0.2 0.1 0 350 1.1k 550 750 950 WAVELENGTH (nm) WAVELENGTH (nm) FIGURE 4. SPECTRAL RESPONSE FIGURE 5. SPECTRUM OF FOUR LIGHT SOURCES NORMALIZED BY LUMINOUS INTENSITY (LUX) 3.25 RADIATION PATTERN 20° 0° 10° 3.05 20° 2.85 2.65 30° 40° VDD (V) LUMINOSITY 30° ANGLE 40° 10° 50° 50° 60° 60° 70° 70° 2.45 2.05 1.85 1.65 80° 80° 90° 0.2 0.4 0.6 0.8 RELATIVE SENSITIVITY FIGURE 6. RADIATION PATTERN Submit Document Feedback 4 90° 1.0 VOUT + 0.7V 2.25 LOW LUX LIMIT 1.45 1.25 0.00001 0.0001 0.001 0.01 0.1 1 10 100 1000 LUX FIGURE 7. VDD OPERATING RANGE (WHITE LED) FN7716.3 April 20, 2015 ISL76671 Typical Performance Curves VDD = 3V, TA = +25°C, REXT = 100kΩ, no load at VOUT, green LED light, unless otherwise 2.0 0.45 1.8 0.40 1.6 OUTPUT VOLTAGE (V) OUTPUT VOLTAGE (V) specified. 1.4 1.2 1.0 0.8 0.6 0.4 0.35 0.30 0.25 0.20 0.15 0.10 0.05 0.2 0 0.01 0.1 1 10 100 0 0.001 1000 0.01 120 3.0 100 2.5 80 60 40 20 -40 -20 0 20 40 60 80 100 1.5 1.0 0.5 0 -60 120 -40 -20 0 20 40 60 80 100 120 TEMPERATURE (° C ) FIGURE 10. OUTPUT VOLTAGE vs TEMPERATURE AT 0 LUX FIGURE 11. SUPPLY CURRENT vs TEMPERATURE AT 0 LUX 1.001 7.80 10 LUX SUPPLY CURRENT (µA) NORMALIZED OUTPUT VOLTAGE 10 2.0 TEMPERATURE ( °C ) 0.999 0.997 50 LUX 0.995 0.993 1.0 FIGURE 9. OUTPUT VOLTAGE vs LIGHT INTENSITY 0.01 LUX TO 5 LUX SUPPLY CURRENT (µA) OUTPUT VOLTAGE (mV) FIGURE 8. OUTPUT VOLTAGE vs LIGHT INTENSITY 0.1 LUX TO 100 LUX 0 -60 0.1 LIGHT INTENSITY (LUX) LIGHT INTENSITY (LUX) 1.8 2.0 2.2 2.4 2.6 2.8 3.0 3.2 SUPPLY VOLTAGE (V) FIGURE 12. NORMALIZED OUTPUT VOLTAGE vs SUPPLY VOLTAGE Submit Document Feedback 5 7.78 7.76 10 LUX 7.74 7.72 7.70 7.68 1.8 2.0 2.2 2.4 2.6 2.8 3.0 3.2 SUPPLY VOLTAGE (V) FIGURE 13. SUPPLY CURRENT vs SUPPLY VOLTAGE FN7716.3 April 20, 2015 ISL76671 Typical Performance Curves VDD = 3V, TA = +25°C, REXT = 100kΩ, no load at VOUT, green LED light, unless otherwise 16.95 23.50 16.90 23.45 16.85 SUPPLY CURRENT (µA) SUPPLY CURRENT (µA) specified. 50 LUX 16.80 16.75 16.70 16.65 1.8 2.0 2.2 2.4 2.6 2.8 3.0 3.2 100 LUX 23.40 23.35 23.30 23.25 23.20 2.2 2.4 SUPPLY VOLTAGE (V) FIGURE 14. SUPPLY CURRENT vs SUPPLY VOLTAGE 3.0 3.2 30 1.05 SUPPLY CURRENT (µA) NORMALIZED OUTPUT VOLTAGE 2.8 FIGURE 15. SUPPLY CURRENT vs SUPPLY VOLTAGE 1.10 10 LUX 1.00 100 50 LUX LUX 0.95 0.90 0.85 -60 2.6 SUPPLY VOLTAGE (V) 50 LUX -40 -20 0 20 40 60 80 100 120 25 20 100 LUX 15 10 LUX 10 50 LUX 5 0 -60 -40 -20 FIGURE 16. NORMALIZED OUTPUT VOLTAGE vs TEMPERATURE 0 20 40 60 80 100 120 TEMPERATURE (°C) TEMPERATURE (° C ) FIGURE 17. SUPPLY CURRENT vs TEMPERATURE FREQUENCY = 100Hz FREQUENCY = 100Hz ISL76671 OUTPUT (V) LIGHT SOURCE LIGHT SOURCE ISL76671 OUTPUT (V) 100µs/DIV 100µs/DIV FIGURE 18. DELAY TIME vs LUX CHANGE FROM 0 LUX FIGURE 19. DELAY TIME vs LUX CHANGE TO 0 LUX Submit Document Feedback 6 FN7716.3 April 20, 2015 ISL76671 Application Information Optical Sensor Location Outline Light-to-Voltage Conversion The ISL76671 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). 18A V OUT = ----------------------- E R EXT 100lux The green area in Figure 20 shows the optical sensor location outline of ISL76671. 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. (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 ISL76671's output circuit may result in premature saturation when an excessively large REXT is used. A REXT value of 100kΩ is recommended for automotive applications. The output compliance voltage is 700mV below the supply voltage as listed in VO-MAX of the “Electrical Specifications” table on page 3. SENSOR OFFSET 2.10mm 2.00mm 0.46mm 0.19mm 0.39mm FIGURE 20. 6 LD ODFN SENSOR LOCATION OUTLINE Submit Document Feedback 7 FN7716.3 April 20, 2015 ISL76671 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 revision. DATE REVISION April 20, 2015 FN7716.3 CHANGE Changed AEC Q100 to AEC-Q100 Updated ordering information on page 2 by adding T7A part and Evaluation Board. Updated ESD Ratings in “Absolute Maximum Ratings (TA = +25°C)” on page 3 as follows: From: Human Body Model (Tested per JESD22-A114E). . . . . . . . . .. 3kV Machine Model (Tested per JESD22-A115C) . . . . . . . . . . . . . . . . . . 300V Charged Device Model (Tested per JESD22-C101E). . . . . . . . . . . . . . 1kV Latch Up (Tested per JESD78C) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100mA To: Human Body Model (Tested per AEC-Q100-002) . . . . . . . . . . . . . . 2.5kV Machine Model (Tested per AEC-Q100-003). . . . . . . . . . . . . . . . . . . 250V Charged Device Model (Tested per AEC-Q100-011) . . . . . . . . . . . . . 1kV Latch-up (Tested per AEC-Q100-004, Class II, Level A) . . . . . . . . . . 100mA Updated POD L6.2x2.1 to current rev with changes as follows: Changed Note 5 From: Tiebar shown (if present) is a non-functional feature. To: Tiebar shown (if present) is a non-functional feature and maybe located on any of the 4 sides (or ends). Updated Arrows to correct arrow type Updated datasheet with current Intersil standards. December 23, 2013 FN7716.2 Page 8 - 2nd line of the disclaimer changed from: "Intersil products are manufactured, assembled and tested utilizing ISO9001 quality systems as noted" to: "Intersil Automotive Qualified products are manufactured, assembled and tested utilizing TS16949 quality systems as noted" December 12, 2011 FN7716.1 “Thermal Information” on page 3, changed from: Pb-Free Reflow Profile (*) ...... see TB487 *Peak temperature during solder reflow +235°C max To Pb-Free Reflow Profile (*) ...... see TB477 *Peak temperature during solder reflow +260°C max “Electrical Specifications” on page 3: Added Min value of 1.4V and Max value of 2.3V for VOUT where e = 100 lux October 19, 2011 FN7716.0 Initial Release About Intersil Intersil Corporation is a leading provider of innovative power management and precision analog solutions. The company's products address some of the largest markets within the industrial and infrastructure, mobile computing and high-end consumer markets. For the most updated datasheet, application notes, related documentation and related parts, please see the respective product information page found at www.intersil.com. You may report errors or suggestions for improving this datasheet by visiting www.intersil.com/ask. Reliability reports are also available from our website at www.intersil.com/support For additional products, see www.intersil.com/en/products.html Intersil Automotive Qualified products are manufactured, assembled and tested utilizing TS16949 quality systems as noted in the quality certifications found at www.intersil.com/en/support/qualandreliability.html 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 Submit Document Feedback 8 FN7716.3 April 20, 2015 ISL76671 Package Outline Drawing L6.2x2.1 6 LEAD OPTICAL DUAL FLAT NO-LEAD PLASTIC PACKAGE (ODFN) Rev 4, 2/15 2.10 A B 6 PIN 1 INDEX AREA 1 6 PIN #1 INDEX AREA 0.65 1.35 2.00 1.30 REF 4 6x0.30 ±0.05 (4X) 0.10 0.10 M C A B 0.65 6x0.35 ±0.05 TOP VIEW BOTTOM VIEW 2.50 PACKAGE OUTLINE 2.10 SEE DETAIL "X" 0.65 (4x0.65) 0.10 C MAX 0.75 C BASE PLANE SEATING PLANE 0.08 C SIDE VIEW (1.35) 0.2 REF (6x0.30) 5 C (6x0.20) (6x0.55) 0.00 MIN. 0.05 MAX. 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 and maybe located on any of the 4 sides (or ends). 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. Submit Document Feedback 9 FN7716.3 April 20, 2015