ISL29101
®
Data Sheet
July 1, 2008
FN6510.0
Small, Low Power, Voltage-Output
Ambient Light Photo Detect IC
Features
• 0.5 lux to 10,000 lux range
• 1.8V to 3.3V supply range
• Low supply current
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.
• 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)
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.
Applications
• Display and keypad dimming for:
- Mobile devices: smart phone, PDA, GPS
- Computing devices: notebook PC, webpod
Ordering Information
PART NUMBER
(Note 2)
TEMP.
RANGE (°C)
PACKAGE
(Pb-free)
PKG.
DWG. #
- Consumer devices: LCD-TV, digital picture frame, digital
camera
ISL29101IROZ-T7
(Note 1)
-40 to +85 6 Ld ODFN
Tape and Reel
L6.2x2.1
• Industrial and medical light sensing
Pinout
ISL29101IROZ-EVALZ Evaluation Board
ISL29101
(6 LD ODFN)
TOP VIEW
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.
VDD
GND
NC
1
2
3
6
5
4
VOUT
NC
THERMAL
PAD*
REXT
*THERMAL PAD CAN BE CONNECTED TO GND OR
ELECTRICALLY ISOLATED
Simplified Block Diagram
VDD
1
Pin Descriptions
VOUT
PIN
NAME
VDD
GND
NC
DESCRIPTION
-
6
CURRENT
AMPLIFIER
LIGHT DATA
PROCESS
+
1
Supply. 1.8V to 3.3V
OUTPUT CURRENT α LIGHT INTENSITY
2
Ground
3, 5
4
No Connect
PHOTODIODE
ARRAY
GND
2
REXT
Connected to an external resistor to GND
setting the light-to-voltage proportionality
constant.
4
REXT
6
VOUT
Voltage Output
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
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1
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