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ISL29102
Data Sheet July 15, 2010 FN6483.1
Low Power Ambient Light-to-Voltage Non-Linear Converter
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 1A 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 -40C to +85C.
Features
* Square Root Voltage Output * 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 -40C to +85C * 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
Ordering Information
PART NUMBER (Notes 2, 3) ISL29102IROZ-T7 (Note 1) ISL29102IROZ-EVALZ 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. PACKAGE (Pb-Free) 6 Ld ODFN (Tape and Reel) Evaluation Board PKG. DWG. # L6.2x2.1
Related Literature
* See AN1422, "Light Sensor Applications"
Simplified Block Diagram
VDD 1 VOUT 6
LIGHT DATA PROCESS
CURRENT AMPLIFIER
OUTPUT CURRENT LIGHT INTENSITY
+
GND 2
PHOTODIODE ARRAY
4 REXT
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 (c) 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 NC 3 PD 6 VOUT 5 NC 4 REXT
Pin Descriptions
PIN NUMBER 1 2 3 4 5 6 PIN NAME VDD GND NC REXT NC VOUT PD Supply (1.8V to 3.3V). Ground 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. PIN DESCRIPTION
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FN6483.1 July 15, 2010
ISL29102
Absolute Maximum Ratings (TA = +25C)
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 Information
Thermal Resistance (Typical) JA (C/W) 6 Lead ODFN (Note 4) . . . . . . . . . . . . . . . . . . . . . . . 88 Maximum Die Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . +90C Storage Temperature . . . . . . . . . . . . . . . . . . . . . . . .-40C to +100C Operating Temperature . . . . . . . . . . . . . . . . . . . . . . .-40C to +85C 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. 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.
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 = +25C, REXT = 100k, no load at VOUT, green LED light, unless otherwise specified. DESCRIPTION CONDITION MIN TYP 0.3 - 10k 1.8 E = 0 lux E = 100 lux E = 1,000 lux 0.65 3.5 10 0.185 0.460 0.580 20 10 0.680 50 15 3.3 MAX UNIT Lux V A A A V V mV %
Range of Input Light Intensity for Square Root Relationship to be Held Operating Supply Voltage Supply Current
VOUT0 VOUT1 VDARK VOUT
Light-to-Voltage Accuracy Light-to-Voltage Accuracy Voltage Output in the absence of light Output Voltage Variation Over Three Light Sources: Fluorescent, Incandescent and Halogen Power Supply Rejection Ratio Maximum Output Compliance Voltage at 95% of Nominal Output Maximum Output Voltage Swing Rise Time
E = 100 lux E = 1000 lux E = 0 lux, REXT = 10M
PSRR VO-CMPL VO-MAX tR
E = 100 lux, VDD = 1.8V to 3.6V
2.5 VDD - 0.7V VDD
mV/V V V s s s us s s s s mA V/ms mV
E = 0 lux to 300 lux E = 0 lux to 1000 lux
68 68 1830 970 352 145 22 22 11 10 1.2
tF
Fall Time
E = 300 lux to 0 lux E = 1000 lux to 0 lux
tD
Delay Time for Rising Edge
E = 0 lux to 300 lux E = 0 lux to 1000 lux
tS
Delay Time for Falling Edge
E = 300 lux to 0 lux E = 1000 lux to 0 lux
ISC SR VOS
Short Circuit Current of Op Amp Slew Rate of Op Amp Offset Voltage of Op Amp
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FN6483.1 July 15, 2010
ISL29102
POWER SUPPLY OR SOURCE METER VDD
INPUT LIGHT 10% 90%
tR
tS 90% 10% tF%
FUNCTION GENERATOR
ISL29102
VOUT OUTPUT
REXT 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 -0.2 300 400 600 800 1.0k 1.1k LIGHT SENSOR RESPONSE NORMALIZED LIGHT INTENSITY HUMAN EYE RESPONSE 1.2 1.0 0.8 0.6 0.4 0.2 0 300 SUN HALOGEN INCANDESCENT FLUORESCENT
400
500
600
700
800
900
1000
1100
WAVELENGTH (nm)
WAVELENGTH (nm)
FIGURE 3. SPECTRAL RESPONSE
FIGURE 4. SPECTRUM OF LIGHT SOURCES
RADIATION PATTERN 20 10 0 10 20
LUMINOSITY 30 ANGLE 40 50 60 70 80 90
30 40 50 60 70 80
0.2 0.4 0.6 0.8 RELATIVE SENSITIVITY
90 1.0
FIGURE 5. RADIATION PATTERN
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FN6483.1 July 15, 2010
ISL29102 Typical Performance Curves (Continued)
4.000 VDD = 3V OUTPUT VOLTAGE (V) 0.400 OUTPUT VOLTAGE (V) REXT = 40k HALOGEN 0.7 0.6 0.5 0.4 0.3 0.2 INCANDESCENT 0.1 4x10-4 0.1 1 10 100 1000 10000 0.0 0 100 200 300 400 500 600 700 800 900 1000 LIGHT INTENSITY (Lux) FLUORESCENT VDD = 3V REXT = 100k HALOGEN
0.040 FLUORESCENT 0.004 INCANDESCENT
LIGHT INTENSITY (LUX)
FIGURE 6. OUTPUT VOLTAGE vs LIGHT INTENSITY
FIGURE 7. OUTPUT VOLTAGE vs LIGHT INTENSITY
2.0 1.8 OUTPUT VOLTAGE (V) 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 VDD = 3V REXT = 1M HALOGEN OUTPUT VOLTAGE (V)
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 VDD = 3V REXT = 1M HALOGEN
LIGHT INTENSITY (LUX)
LIGHT INTENSITY (LUX)
FIGURE 8. OUTPUT VOLTAGE vs LIGHT INTENSITY
FIGURE 9. OUTPUT VOLTAGE vs LIGHT INTENSITY
1000.00 FALL TIME TRANSIENT TIME (ms) OUTPUT VOLTAGE (V) 100.00 10.00 1.00 RISE TIME 0.1 DELAY TIME BEFORE FALLING 0.01 1 10 100 1000
0.30 EQUIVALENT INPUT LIGHT (LUX) 0.25 DELAY TIME BEFORE RISING 0.20 0.15 0.10 0.05 0.00 -0.05 -50 -40 -30 -20 -10 0 0.000 10 20 30 40 50 60 70 80 90 0.005 VDD = 3V REXT = 10M 0.025
LUX CHANGE FROM/TO 0 LUX (LUX)
TEMPERATURE (C)
FIGURE 10. TRANSIENT TIME vs LUX CHANGE FROM/TO 0 LUX
FIGURE 11. OUTPUT VOLTAGE vs TEMPERATURE AT 0 LUX
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FN6483.1 July 15, 2010
ISL29102 Typical Performance Curves (Continued)
1.10 NORMALIZED OUTPUT VOLTAGE VDD = 3V SUPPLY CURRENT (A) REXT = 10M 1.00 NO LOAD 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
0.90
0.80 -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
FIGURE 13. NORMALIZED OUTPUT VOLTAGE vs TEMPERATURE
13 11 7 9 5 300 Lux 3 REXT = 100k NO LOAD 1 -50 -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 TEMPERATURE (C) 1000 Lux NORMALIZED OUTPUT VOLTAGE VDD = 3V FLUORESCENT LIGHT
1.010 FLUORESCENT LIGHT 1000 Lux 1.005
SUPPLY CURRENT (A)
1.000
0.995 VDD = 3V REXT = 100k 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 VOLTAGE vs SUPPLY VOLTAGE
9.6 FLUORESCENT LIGHT 1000 Lux SUPPLY CURRENT LIGHT INTENSITY VDD = 3V, REXT = 100k 9.4 LIGHT INTENSITY RISES FROM 0 LUX TO 300 LUX AND FALLS FROM 300 LUX TO 0 LUX WITH WHITE LED
9.2 REXT = 100k NO LOAD 9.0 1.5 2.0 2.5 3.0 SUPPLY VOLTAGE (V) 3.5 4.0 VOUT 0V
FIGURE 16. SUPPLY CURRENT vs SUPPLY VOLTAGE
FIGURE 17. TRANSIENT RESPONSE OF ISL29102 TO CHANGE IN LIGHT INTENSITY
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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).
1.8A V OUT = ---------------------- E x R EXT 100lux (EQ. 1)
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.
In Equation 1, VOUT is the output voltage, E is the light intensity and REXT is the value of the external resistor. The
2.10mm
2.00mm
SENSOR OFFSET
0.46mm
0.19mm
0.39mm
FIGURE 18. 6 LD ODFN SENSOR LOCATION OUTLINE
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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 12/12/08 REVISION FN6483.1 CHANGE 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 6x0.300.05 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 6 PIN 1 INDEX AREA 0.65 2.00 1.35 1.30 REF A B 1 6 PIN #1 INDEX AREA
4 6X 0.300.05 (4X) 0.10 0.65 TOP VIEW 6x0.35 0.05 BOTTOM VIEW 0.10 M C A B
PACKAGE OUTLINE
2.50 2.10 0.65 SEE DETAIL "X" 0.10 C C BASE PLANE SEATING PLANE 0.08 C SIDE VIEW (1.35)
(4x0.65)
(6x0.30)
(6x0.20) (6x0.55) TYPICAL RECOMMENDED LAND PATTERN
C
0 . 2 REF
5
0 . 00 MIN. 0 . 05 MAX. DETAIL "X"
NOTES: 1. 2. 3. 4. Dimensions are in millimeters. Dimensions in ( ) for Reference Only. Dimensioning and tolerancing conform to ASME Y14.5m-1994. Unless otherwise specified, tolerance : Decimal 0.05 Dimension applies to the metallized terminal and is measured between 0.15mm and 0.30mm from the terminal tip. 5. 6. Tiebar shown (if present) is a non-functional feature. 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.
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FN6483.1 July 15, 2010

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