1
®
FN6510.0
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. All Rights Reserved.
All other trademarks mentioned are the property of their respective owners.
ISL29101
Small, Low Power, Voltage-Output
Ambient Light Photo Detect IC
The ISL29101 is a low power ambient Light-to-Voltage
optical sensor combining a photodiode array, a current
amplifier and a micropower operational amplifier on a single
monolithic IC. Similar to the human eye, the photodiode
array has a peak response at 550nm and spans from 400nm
to 600nm, rejecting UV light and IR light. The output voltage
is proportional to the visible light intensity from 0.5 lux up to
10,000 lux. However , the input luminance range can go up to
30,000 lux with some compromise in linearity.
A dark current compensation circuit aids the photodiode array
to minimize temperature dependent leakage currents in the
absence of light, improving the light sensity at low lux levels.
Housed in an ultra-compact surface mount 2mmx2.1mm
ODFN clear plastic package, this device is excellent for
power saving control functions in cell phones, PDAs, and
other handheld applications.
Simplified Block Diagram
Features
• 0.5 lux to 10,000 lux range
• 1.8V to 3.3V supply range
• Low supply current
• Fast response time
• Excellent linearity of output voltage vs light intensity
• Close to human eye response
• Good IR rejection
• Internal temperature compensation
• Operating temperature range -40°C to +85°C
• Ultra-compact surface mount package
• 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, digit al
camera
• Industrial and medical light sensing
Pinout ISL29101
(6 LD ODFN)
TOP VIEW
Ordering Information
PART NUMBER
(Note 2) TEMP.
RANGE (°C) PACKAGE
(Pb-free) PKG.
DWG. #
ISL29101IROZ-T7
(Note 1) -40 to +85 6 Ld ODFN
Tape and Reel L6.2x2.1
ISL29101IROZ-EVALZ 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 opera t ions.
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
GND
REXT
VOUT
1
2
4
6
LIGHT DATA
PROCESS
CURRENT
AMPLIFIER
OUTPUT CURRENT α LIGHT INTENSITY
PHOTODIODE
ARRAY
+
-
Pin Descriptions
PIN NAME DESCRIPTION
1 VDD Supply. 1.8V to 3.3V
2 GND Ground
3, 5 NC No Connect
4 REXT Connected to an external resistor to GND
setting the light-to-voltage proportionality
constant.
6 VOUT Voltage Output
1
2
3
6
5
4
VDD
GND
NC
VOUT
NC
REXT
THERMAL
PAD*
*THERMAL PAD CAN BE CONNECTED TO GND OR
ELECTRICALLY ISOLATED
Data Sheet July 1, 2008
2FN6510.0
July 1, 2008
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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3000V
Machine Model. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .300V
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, REXT = 100kΩ, no load at VOUT, green LED light, unless otherwise specified.
PARAMETER DESCRIPTION CONDITION MIN TYP MAX UNIT
E Range of Input Light Intensity 0.5 to 10k lux
VDD Power Supply Range 1.8 3.3 V
IDD Supply Current E = 1000 lux 23 35 µA
E = 100 lux 3.5 µA
E = 0 lux 0.65 µA
VOUT0 Light-to-Voltage Accuracy E = 100 lux 165 mV
VOUT1 Light-to-Voltage Accuracy E = 1000 lux 1.15 1.65 2.13 V
VDARK Voltage Output in the Absence of Light E = 0 lux, RL = 10MΩ125mV
ΔVOUT Output Voltage Variation Over Three Light Sources:
Fluorescent, Incandescent and Halogen E = 1000 lux 20 %
PSRR Power Supply Rejection Ratio E = 100 lux, VDD = 1.8V to
3.3V 2.5 mV/V
VO-MAX Maximum Output Compliance Voltage at 95% of
Nominal Output VDD - 0.7V V
tRISRC and ISNK Rise Time (Note 3) E = 300 lux from 0 lux 104 µs
E = 1000 lux from 0 lux 27 µs
tFISRC and ISNK Fall Time (Note 3) E = 300 lux to 0 lux 562 µs
E = 1000 lux to 0 lux 233 µs
tDISRC and ISNK Delay Time for Rising Edge (Note 3) E = 300 lux from 0 lux 504 µs
E = 1000 lux from 0 lux 209 µs
tSISRC and ISNK Delay Time for Falling Edge (Note 3) E = 300 lux to 0 lux 30 µs
E = 1000 lux to 0 lux 18 µs
ISC Short Circuit Current of Op Amp ±11 mA
SR Slew Rate of Op Amp ±10 V/ms
VOS Offset Voltage of Op Amp ±1.2 mV
NOTE:
3. Switching time measurement is based on Figures 1 and 2.
ISL29101
3FN6510.0
July 1, 2008
FIGURE 1. TEST CIRCUIT FOR RISE/F ALL TIME
MEASUREMENT FIGURE 2. TIMING DIAGRAM
ISL29101
FUNCTION
GENERATOR
VDD
VOUT
POWER SUPPL Y
OR
SOURCE METER
REXT
INPUT
LIGHT
OUTPUT
10% 90% trtf%
10%
90%
tD
tS
Typical Performance Curves
FIGURE 3. SPECTRAL RESPONSE FIGURE 4. SPECTRUM OF LIGHT SOURCES
FIGURE 5. RADIATION PATTERN FIGURE 6. OUTPUT VOLTAGE vs LIGHT SENSITIVITY
NORMALIZED RESPONSE
ISL29101 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)
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 0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
1.8
2.0
1000 2000 3000 4000 5000 6000 7000 8000 9000 10000
LIGHT INTENSITY (LUX)
OUTPUT VOLTAGE (V)
FLUORESCENT
HALOGEN
INCANDESCENT
0
VDD = 3V
REXT = 10kΩ
ISL29101
4FN6510.0
July 1, 2008
FIGURE 7. OUTPUT VOLTAGE vs LIGHT SENSITIVITY FIGURE 8. OUTPUT VOLTAGE vs LIGHT INTENSITY
FIGURE 9. TRANSIENT TIME vs LUX CHANGE FROM 0 LUX FIGURE 10. OUTPUT VOLTAGE vs TEMPERATURE AT 0 LUX
FIGURE 11. SUPPLY CURRENT vs TEMPERATURE AT 0 LUX FIGURE 12. NORMALIZED OUTPUT VOLTAGE vs
TEMPERATURE
Typical Performance Curves (Continued)
0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
1.8
2.0
0 100 200 300 400 500 600 700 800 900 1000
LIGHT INTENSITY (LUX)
OUTPUT VOLTAGE (V)
FLUORESCENT
HALOGEN
INCANDESCENT
VDD = 3V
REXT = 100kΩ
0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
1.8
2.0
LIGHT INTENSITY (LUX)
OUTPUT VOLTAGE (V)
0102030405060708090100
FLUORESCENT
INCANDESCENT
HALOGEN
VDD = 3V
REXT = 1MΩ
0.01
0.10
1.00
10.00
100.00
1101001k
LUX CHANGE FROM 0 LUX (LUX)
TRANSIENT TIME (ms)
FALL TIME
DELAY TIME BEFORE FALLING
RISE TIME
DELAY TIME BEFORE
BEFORE RISING
-0.013
0
0.013
0.026
0.039
0.052
0.065
0.078
0.091
0.104
0.117
EQUIVALENT LIGHT INTENSITY (LUX)
-2
0
2
4
6
8
10
12
14
16
18
-50 -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 100
TEMPERATURE (°C)
OUTPUT VOLTAGE (mV)
VDD = 3V
REXT = 10MΩ
LIGHT INTENSITY = 0 LUX
VDD = 3V
REXT = 10MΩ
0.4
0.6
0.8
1.0
1.2
1.4
-50 -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 100
TEMPERATURE (°C)
SUPPLY CURRENT (µA)
VDD = 3V
REXT = 10MΩ
LIGHT INTENSITY = 0 LUX
NO LOAD
0.97
0.98
0.99
1.00
1.01
1.02
1.03
-50 -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 100
TEMPERATURE (°C)
NORMALIZED OUTPUT
VOLTAGE VARIATION
VDD = 3V
FLUORESCENT LIGHT
300 LUX
1000 LUX
ISL29101
5FN6510.0
July 1, 2008
FIGURE 13. SUPPLY CURRENT vs TEMPERATURE FIGURE 14. NORMALIZED O UTPUT VOL TAGE vs SUPPLY
VOLTAGE
FIGURE 15. SUPPLY CURRENT vs SUPPLY VOLTAGE FIGURE 16. TRANSIENT RESPONSE OF ISL29101 TO
CHANGE IN LIGHT INTENSITY
Typical Performance Curves (Continued)
0
4
6
8
10
12
14
16
18
20
22
-50 -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 100
TEMPERATURE (°C)
SUPPLY CURRENT (µA)
1100 LUX
300 LUX
VDD = 3V
FLUORESCENT LIGHT NO LOAD
REXT = 100kΩ0.97
0.98
0.99
1.00
1.01
1.02
1.5 2.0 2.5 3.0 3.5 4.0
SUPPLY VOLTAGE (V)
NORMALIZED OUTPUT VOLTAGE
REXT = 100kΩ
VDD = 3
FLUORESCENT LIGHT INTENSITY = 1100 LUX
20.0
20.5
21.0
21.5
22.0
22.5
23.0
1.5 2.0 2.5 3.0 3.5 4.0
SUPPLY VOLTAGE (V)
SUPPLY CURRENT
NO LOAD
VDD = 3
FLUORESCENT LIGHT INTENSITY = 1100 LUX
LIGHT INTENSITY
V
DD
= 3V, R
EXT
= 100k
Ω
LIGHT INTENSITY RISES FROM 0 LUX TO 300 LUX
AND FALLS FROM 300 LUX TO 0 LUX WITH
WHITE LED
V
OUT
0V
ISL29101
6
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 lice nse is gran t ed by i mpli catio n or other wise u nder an y p a tent or patent rights of Intersil or its subsidiari es.
For information regarding Intersil Corporation and its products, see www.intersil.com
FN6510.0
July 1, 2008
Application Information
Light-to-Voltage Conversion
The ISL29101 has responsiveness that is a linear 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, VOUT is the output voltage and E is the light in tensity.
REXT is the value of the external resistor, which is used to
set the light-to-voltage scaling constant. The compliance of
the ISL29101’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 2.
Optical Sensor Location Outline
The green area in Figure 17 shows the optical sensor
location outline of ISL29101. 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.
VOUT 1.6μA100lux)ER
EXT
••⁄(=(EQ. 1)
FIGURE 17. 6 LD ODFN SENSOR LOCATION OUTLINE
2.10mm
2.00mm
0.39mm
0.46mm
0.19mm
SENSOR OFFSET
29101
ISL29101
7FN6510.0
July 1, 2008
ISL29101
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 . Th e pin #1 identifier may be
Unless otherwise specified, tol erance : Decim al ± 0.05
Tiebar shown (if present) is a non-functional feature.
The configuration of the pin #1 identifier is optio nal, but must be
between 0.15mm an d 0.3 0m m from the te rminal 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
