DATASHEET

ISL29009
Data Sheet
July 1, 2008
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.
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
VDD
1
ISL29009
(6 LD ODFN)
TOP VIEW
LIGHT DATA
PROCESS
IOUT
6
CURRENT
AMPLIFIER
6 IOUT
VDD 1
GND 2
OUTPUT CURRENT α √LIGHT INTENSITY
THERMAL
PAD*
NC 3
GND
2
FN6484.0
PHOTODIODE
ARRAY
EN
4
Ordering Information
PART
NUMBER
(Note)
TEMP.
RANGE (°C)
ISL29009IROZ-T7*
-40 to +85
4 EN
*THERMAL PAD CAN BE CONNECTED TO GND OR
ELECTRICALLY ISOLATED
Pin Descriptions
PACKAGE
(Pb-free)
6 Ld ODFN
PIN NUMBER
PIN NAME
PKG. DWG. #
1
VDD
Supply, 1.8V to 3.3V
L6.2x2.1
2
GND
Ground
3
NC
No connect
4
EN
Active LO enable
5
NC
No connect
6
IOUT
*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
5 NC
DESCRIPTION
Current output
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 2008. 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.
ISL29009
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
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
VDD = 3V, TA = +25°C, EN = 0, RL = 100kΩ at IOUT pin, green LED light, unless otherwise specified.
PARAMETER
DESCRIPTION
E
Range of Input Light Intensity
VDD
Power Supply Range
IDD
Supply Current
CONDITION
MIN
TYP
0.3 to 10k
1.8
µA
E = 0 lux
0.25
µA
Light-to-Current Accuracy
E = 100 lux
1.8
IOUT2
Light-to-Current Accuracy
E = 1000 lux
IDARK
Dark Current Output in the Absence of Light
E = 0 lux, RL = 10MΩ
ΔIOUT
Output Current Variation Over Three Light Sources:
Fluorescent, Incandescent and Halogen
VO-MAX
IOUT Max Output Compliance Voltage at 95% of
Nominal Output
E = 1000 lux
tR
IOUT Rise Time (Note 1)
IOUT Delay Time for Falling Edge (Note 1)
14
µA
IOUT1
tS
V
3
250
IOUT Delay Time for Rising Edge (Note 1)
3.3
E = 100 lux
EN = VDD
tD
lux
9
Supply Current when Shut Down
IOUT Fall Time (Note 1)
UNIT
E = 1000 lux
ISD
tF
MAX
4.6
350
nA
µA
5.7
6.8
µA
2
5
nA
10
%
VDD - 0.2
V
RL = 100kΩ, E = 300 lux
from 0 Lux
70
µs
RL = 100kΩ, E = 1000 lux
from 0 Lux
20
µs
RL = 100kΩ, E = 300 lux to
0 Lux
2410
µs
RL = 100kΩ, E = 1000 lux to
0 Lux
1290
µs
RL = 100kΩ, E = 300 lux
from 0 Lux
600
µs
RL = 100kΩ, E = 1000 lux
from 0 Lux
280
µs
RL = 100kΩ, E = 300 lux to
0 Lux
75
µs
RL = 100kΩ, E = 1000 lux to
0 Lux
5
µs
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
2
FN6484.0
July 1, 2008
ISL29009
Electrical Specifications
VDD = 3V, TA = +25°C, EN = 0, RL = 100kΩ at IOUT pin, green LED light, unless otherwise specified.
(Continued)
PARAMETER
DESCRIPTION
CONDITION
MIN
TYP
MAX
UNIT
tEN
Enable Time
RL = 100kΩ, E = 100 lux
20
µs
tDIS
Disable Time
RL = 100kΩ, E = 100 lux
200
µs
NOTE:
1. Switching time measurement is based on Figures 1 and 2.
POWER SUPPLY
OR
SOURCE METER
INPUT
LIGHT
VDD
10%
90%
tR
ISL29009
FUNCTION
GENERATOR
tS
VOUT
tF%
90%
10%
RL
OUTPUT
tD
FIGURE 2. TIMING DIAGRAM
FIGURE 1. TEST CIRCUIT FOR RISE/FALL TIME
MEASUREMENT
Typical Performance Curves
1.2
1.2
NORMALIZED LIGHT INTENSITY
NORMALIZED RESPONSE
HUMAN EYE RESPONSE
1.0
0.8
0.6
LIGHT SENSOR RESPONSE
0.4
0.2
0.0
600
800
WAVELENGTH (nm)
INCANDESCENT
0.8
SUN
HALOGEN
0.6
0.4
WLED
0.2
0
300
-0.2
400
FLUORESCENT
1.0
1.0k
400
500
600
700
800
WAVELENGTH (nm)
900
1000
1100
FIGURE 4. SPECTRUM OF LIGHT SOURCES
FIGURE 3. SPECTRAL RESPONSE
RADIATION PATTERN
20°
LUMINOSITY
30°
ANGLE 40°
10°
0°
10°
20°
30°
40°
50°
50°
60°
60°
70°
70°
80°
80°
90°
0.2 0.4
0.6 0.8
RELATIVE SENSITIVITY
90°
1.0
FIGURE 5. RADIATION PATTERN
3
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July 1, 2008
ISL29009
Typical Performance Curves (Continued)
7
6
HALOGEN
OUTPUT CURRENT (µA)
OUTPUT CURRENT (µA)
100
10
1
FLUORESCENT
0.1
INCANDESCENT
HALOGEN
5
4
3
2
FLUORESCENT
INCANDESCENT
1
0.01
0.1
1
10
100
1000
0
10000
0
100 200 300 400 500 600 700 800 900 1000
LIGHT INTENSITY (Lux)
LIGHT INTENSITY (LUX)
FIGURE 7. OUTPUT CURRENT vs LIGHT INTENSITY
FIGURE 6. OUTPUT CURRENT vs LIGHT INTENSITY
2.0
0.8
0.7
HALOGEN
1.6
OUTPUT CURRENT (µA)
OUTPUT CURRENT (µA)
1.8
1.4
1.2
1.0
0.8
FLUORESCENT
0.6
INCANDESCENT
0.4
0
10
20
30
40
50
60
70
80
90
0.3
0.2
FLUORESCENT
INCANDESCENT
0
1
2
3
4
5
6
7
8
10
9
LIGHT INTENSITY (LUX)
FIGURE 8. OUTPUT CURRENT vs LIGHT INTENSITY
FIGURE 9. OUTPUT CURRENT vs LIGHT INTENSITY
30
1000
FALL TIME
DELAY TIME BEFORE RISING
25
OUTPUT CURRENT (nA)
100
RISE TIME
10
1
DELAY TIME BEFORE FALLING
0.1
20
15
10
10
100
LUX CHANGE FROM 0 LUX (LUX)
1000
FIGURE 10. TRANSIENT TIME vs LUX CHANGE FROM 0 LUX
4
0.005
5
0
1
0.025
-5
0.000
EQUIVALENT INPUT LIGHT (LUX)
TRANSIENT TIME ( ms)
0.4
0
100
LIGHT INTENSITY (LUX)
0.01
HALOGEN
0.5
0.1
0.2
0
0.6
-50 -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90
TEMPERATURE (°C)
FIGURE 11. OUTPUT CURRENT vs TEMPERATURE AT 0 LUX
FN6484.0
July 1, 2008
ISL29009
Typical Performance Curves (Continued)
1.20
NORMALIZED OUTPUT CURRENT
0.35
SUPPLY CURRENT (µA)
0.30
0.25
0.20
0.15
0.10
0.05
1.05
1000 Lux
1.00
300 Lux
0.95
0.90
0.85
FIGURE 13. NORMALIZED OUTPUT CURRENT vs
TEMPERATURE
1.010
VDD = 3V
FLUORESCENT LIGHT
10
NORMALIZED OUTPUT CURRENT
12
SUPPLY CURRENT (µA)
1.10
0.80
-50 -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90
TEMPERATURE (°C)
0.00
-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
1000 Lux
8
6
4
300 Lux
2
0
-50 -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90
TEMPERATURE (°C)
FLUORESCENT LIGHT
1000 Lux
1.005
1.000
0.995
0.990
1.5
2.0
2.5
3.0
SUPPLY VOLTAGE (V)
3.5
4.0
FIGURE 15. NORMALIZED OUTPUT CURRENT vs SUPPLY
VOLTAGE
FIGURE 14. SUPPLY CURRENT vs TEMPERATURE
8.6
SUPPLY CURRENT
8.5
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
8.4
8.3
8.2
VOUT
0V
8.1
8.0
1.5
2.0
2.5
3.0
SUPPLY VOLTAGE (V)
3.5
4.0
FIGURE 16. SUPPLY CURRENT vs SUPPLY VOLTAGE
5
FIGURE 17. TRANSIENT RESPONSE OF ISL29009 TO
CHANGE IN LIGHT INTENSITY
FN6484.0
July 1, 2008
ISL29009
Application Information
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.
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).
1.8μA
I OUT = ----------------------- E
100lux
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.
(EQ. 1)
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:
1.8μA
V OUT = I OUT × R L = ----------------------- E × R L
100lux
(EQ. 2)
2.10mm
2.00mm
SENSOR OFFSET
29009
0.46mm
0.19mm
0.39mm
FIGURE 18. 6 LD ODFN SENSOR LOCATION OUTLINE
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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.
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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
(4X)
1 . 30 REF
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)
C
BASE PLANE
( 6X 0 . 30 )
SEATING PLANE
0.08 C
SIDE VIEW
( 6X 0 . 55 )
C
0 . 2 REF
5
(1 . 95)
0 . 00 MIN.
0 . 05 MAX.
DETAIL "X"
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
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