FN6484 Rev 0.00 Page 1 of 7
July 1, 2008
FN6484
Rev 0.00
July 1, 2008
ISL29009
Non-Linear Output Current, Low Power Ambient Light Photo Detect IC
DATASHEET
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
ISL29009
(6 LD ODFN)
TOP VIEW
Ordering Information
PART
NUMBER
(Note)
TEMP.
RANGE (°C)
PACKAGE
(Pb-free) PKG. DWG. #
ISL29009IROZ-T7* -40 to +85 6 Ld ODFN L6.2x2.1
*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.
VDD
IOUT
1
2
LIGHT DATA
PROCESS
CURRENT
AMPLIFIER
OUTPUT CURRENT LIGHT INTENSITY
PHOTODIODE
ARRAY
4
GND EN
6
Pin Descriptions
PIN NUMBER PIN NAME DESCRIPTION
1 VDD Supply, 1.8V to 3.3V
2 GND Ground
3 NC No connect
4EN
Active LO enable
5 NC No connect
6 IOUT Current output
1
2
3
6
5
4
VDD
GND
NC
IOUT
NC
EN
*THERMAL PAD CAN BE CONNECTED TO GND OR
THERMAL
PAD*
ELECTRICALLY ISOLATED
ISL29009
FN6484 Rev 0.00 Page 2 of 7
July 1, 2008
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 JA (°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 pulse d tests, therefore: TJ = TC = TA
Electrical Specifications VDD = 3V, TA = +25°C, EN = 0, RL = 100kat IOUT pin, green LED light, unless otherwise specified.
PARAMETER DESCRIPTION CONDITION MIN TYP MAX UNIT
E Range of Input Light Intensity 0.3 to 10k lux
VDD Power Supply Range 1.8 3.3 V
IDD Supply Current E = 1000 lux 9 14 µA
E = 100 lux 3 µA
E = 0 lux 0.25 µA
ISD Supply Current when Shut Down EN = VDD 250 350 nA
IOUT1 Light-to-Current Accuracy E = 100 lux 1.8 µA
IOUT2 Light-to-Current Accuracy E = 1000 lux 4.6 5.7 6.8 µA
IDARK Dark Current Output in the Absence of Light E = 0 lux, RL = 10M25nA
IOUT Output Current Variation Over Three Light Sources:
Fluorescent, Incandescent and Halogen
10 %
VO-MAX IOUT Max Output Compliance Voltage at 95% of
Nominal Output
E = 1000 lux VDD - 0.2 V
tRIOUT Rise Time (Note 1) RL = 100k, E = 300 lux
from 0 Lux
70 µs
RL = 100k, E = 1000 lux
from 0 Lux
20 µs
tFIOUT Fall Time (Note 1) RL = 100k, E = 300 lux to
0 Lux
2410 µs
RL = 100k, E = 1000 lux to
0 Lux
1290 µs
tDIOUT Delay Time for Rising Edge (Note 1) RL = 100k, E = 300 lux
from 0 Lux
600 µs
RL = 100k, E = 1000 lux
from 0 Lux
280 µs
tSIOUT Delay Time for Falling Edge (Note 1) RL = 100k, E = 300 lux to
0 Lux
75 µs
RL = 100k, E = 1000 lux to
0 Lux
5µs
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
ISL29009
FN6484 Rev 0.00 Page 3 of 7
July 1, 2008
tEN Enable Time RL = 100k, E = 100 lux 20 µs
tDIS Disable Time RL = 100k, E = 100 lux 200 µs
NOTE:
1. Switching time measurement is based on Figures 1 and 2.
Electrical Specifications VDD = 3V, TA = +25°C, EN = 0, RL = 100kat IOUT pin, green LED light, unless otherwise specified.
(Continued)
PARAMETER DESCRIPTION CONDITION MIN TYP MAX UNIT
FIGURE 1. TEST CIRCUIT FOR RISE/FALL TIME
MEASUREMENT
FIGURE 2. TIMING DIAGRAM
ISL29009
FUNCTION
GENERATOR
VDD
RL
VOUT
POWER SUPPLY
OR
SOURCE METER
INPUT
LIGHT
OUTPUT
10% 90%
tR
tF%
10%
90%
tD
tS
Typical Performance Curves
FIGURE 3. SPECTRAL RESPONSE FIGURE 4. SPECTRUM OF LIGHT SOURCES
FIGURE 5. RADIATION PATTERN
-0.2
0.0
0.2
0.4
0.6
0.8
1.0
1.2
400 600 800 1.0k
WAVELENGTH (nm)
NORMALIZED RESPONSE
LIGHT SENSOR RESPONSE
HUMAN EYE RESPONSE
0
0.2
0.4
0.6
0.8
1.0
1.2
300 400 500 600 700 800 900 1000 1100
WAVELENGTH (nm)
NORMALIZED LIGHT INTENSITY
SUN
HALOGEN
INCANDESCENT
WLED
FLUORESCENT
RADIATION PATTERN
LUMINOSITY
ANGLE
RELATIVE SENSITIVITY
90°
80°
70°
60°
50°
40°
30°
20° 10° 0° 10° 20°
30°
40°
50°
60°
70°
80°
90°
0.2 0.4 0.6 0.8 1.0
ISL29009
FN6484 Rev 0.00 Page 4 of 7
July 1, 2008
FIGURE 6. OUTPUT CURRENT vs LIGHT INTENSITY FIGURE 7. OUTPUT CURRENT vs LIGHT INTENSITY
FIGURE 8. OUTPUT CURRENT vs LIGHT INTENSITY FIGURE 9. OUTPUT CURRENT vs LIGHT INTENSITY
FIGURE 10. TRANSIENT TIME vs LUX CHANGE FROM 0 LUX FIGURE 11. OUTPUT CURRENT vs TEMPERATURE AT 0 LUX
Typical Performance Curves (Continued)
0.01
0.1
1
10
100
0.1 1 10 100 1000 10000
LIGHT INTENSITY (LUX)
OUTPUT CURRENT (µA)
HALOGEN
FLUORESCENT
INCANDESCENT
0
1
2
3
4
5
6
7
0 100 200 300 400 500 600 700 800 900 1000
LIGHT INTENSITY (Lux)
OUTPUT CURRENT (µA)
HALOGEN
FLUORESCENT
INCANDESCENT
0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
1.8
2.0
0 102030405060708090100
LIGHT INTENSITY (LUX)
OUTPUT CURRENT (µA)
HALOGEN
FLUORESCENT
INCANDESCENT
0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0246810
LIGHT INTENSITY (LUX)
OUTPUT CURRENT (µA)
13579
HALOGEN
FLUORESCENT
INCANDESCENT
0.01
0.1
1
10
100
1000
1 10 100 1000
LUX CHANGE FROM 0 LUX (LUX)
TRANSIENT TIME ( ms)
FALL TIME
DELAY TIME BEFORE FALLING
RISE TIME
DELAY TIME BEFORE RISING
-5
0
5
10
15
20
25
30
-50 -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90
TEMPERATURE (°C)
OUTPUT CURRENT (nA)
0.000
0.005
0.025
EQUIVALENT INPUT LIGHT (LUX)
ISL29009
FN6484 Rev 0.00 Page 5 of 7
July 1, 2008
FIGURE 12. SUPPLY CURRENT vs TEMPERATURE AT 0 LUX FIGURE 13. NORMALIZED OUTPUT CURRENT vs
TEMPERATURE
FIGURE 14. SUPPLY CURRENT vs TEMPERATURE FIGURE 15. NORMALIZED OUTPUT CURRENT vs SUPPLY
VOLTAGE
FIGURE 16. SUPPLY CURRENT vs SUPPLY VOLTAGE FIGURE 17. TRANSIENT RESPONSE OF ISL29009 TO
CHANGE IN LIGHT INTENSITY
Typical Performance Curves (Continued)
0.00
0.05
0.10
0.15
0.20
0.25
0.30
0.35
-50 -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90
TEMPERATURE (°C)
SUPPLY CURRENT (µA)
0.80
0.85
0.90
0.95
1.00
1.05
1.10
1.15
1.20
-50 -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90
TEMPERATURE (°C)
NORMALIZED OUTPUT CURRENT
FLUORESCENT LIGHT
VDD = 3V
300 Lux
1000 Lux
0
2
4
6
8
10
12
-50 -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90
TEMPERATURE (°C)
SUPPLY CURRENT (µA)
FLUORESCENT LIGHT
VDD = 3V
300 Lux
1000 Lux
0.990
0.995
1.000
1.005
1.010
1.5 2.0 2.5 3.0 3.5 4.0
SUPPLY VOLTAGE (V)
NORMALIZED OUTPUT CURRENT
FLUORESCENT LIGHT
1000 Lux
8.0
8.1
8.2
8.3
8.4
8.5
8.6
1.5 2.0 2.5 3.0 3.5 4.0
SUPPLY VOLTAGE (V)
SUPPLY CURRENT
FLUORESCENT LIGHT
1000 Lux
LIGHT INTENSITY
VDD = 3V, RL = 100k
LIGHT INTENSITY RISES FROM 0 LUX TO 300 LUX
AND FALLS FROM 300 LUX TO 0 LUX WITH WHITE LED
VOUT
0V
FN6484 Rev 0.00 Page 6 of 7
July 1, 2008
ISL29009
Intersil products are manufactured, assembled and tested utilizing ISO9001 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 may modify the circuit design and/or specifications of products at any time without notice, provided that such
modification does not, in Intersil's sole judgment, affect the form, fit or function of the product. Accordingly, the reader is cautioned to verify that datasheets 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
For additional products, see www.intersil.com/en/products.html
© Copyright Intersil Americas LLC 2008. All Rights Reserved.
All trademarks and registered trademarks are the property of their respective owners.
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).
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:
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.
IOUT
1.8A
100lux
-----------------------E=(EQ. 1)
VOUT IOUT RL
1.8A
100lux
-----------------------ER
L
== (EQ. 2)
FIGURE 18. 6 LD ODFN SENSOR LOCATION OUTLINE
2.10mm
2.00mm
0.39mm
0.46mm
0.19mm
SENSOR OFFSET
29009
ISL29009
FN6484 Rev 0.00 Page 7 of 7
July 1, 2008
Package Outline Drawing
L6.2x2.1
6 LEAD OPTICAL DUAL FLAT NO-LEAD PLASTIC PACKAGE (ODFN)
Rev 0, 9/06
located within the zone indicated. The pin #1 identifier may be
Unless otherwise specified, tolerance : Decimal ± 0.05
Tiebar shown (if present) is a non-functional feature.
The configuration of the pin #1 identifier is optional, but must be
between 0.15mm and 0.30mm from the terminal tip.
Dimension b applies to the metallized terminal and is measured
Dimensions in ( ) for Reference Only.
Dimensioning and tolerancing conform to AMSE Y14.5m-1994.
6.
either a mold or mark feature.
3.
5.
4.
2.
Dimensions are in millimeters.1.
NOTES:
(4X) 0.10
INDEX AREA
PIN 1
A
2.10
B
2.00
C
SEATING PLANE
BASE PLANE
0.08
0.10
SEE DETAIL "X"
C
C
0 . 00 MIN.
DETAIL "X"
0 . 05 MAX.
0 . 2 REF
C5
SIDE VIEW
TYPICAL RECOMMENDED LAND PATTERN
( 6X 0 . 30 )
( 6X 0 . 55 )
6
TOP VIEW
(0 . 65)
(1 . 95)
(0 . 65) (1 . 35)
BOTTOM VIEW
6X 0 . 35 ± 0 . 05
B0.10 MAC
1
1 . 35 1 . 30 REF
INDEX AREA
PIN 1
6
0.65
0 . 65
MAX 0.75
6X 0 . 30 ± 0 . 05