ISL29101_14 Datasheet, PDF (1/7 Pages) Intersil Corporation – Small, Low Power, Voltage-Output Ambient Light Photo Detect IC

Data Sheet
November 5, 2012
ISL29101
FN6510.1
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.
Ordering Information
PART NUMBER
(Notes 2, 3)
TEMP. PACKAGE PKG.
RANGE (°C) (Pb-free) DWG. #
ISL29101IROZ-T7 (Note 1) -40 to +85 6 Ld ODFN L6.2x2.1
ISL29101IROZ-T7A (Note 1) -40 to +85 6 Ld ODFN 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
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.
3. For Moisture Sensitivity Level (MSL), please see device
information page for ISL29101. For more information on MSL
please see tech brief TB477.
Simplified Block Diagram
VDD
1
LIGHT DATA
PROCESS
CURRENT
AMPLIFIER
-
+
OUTPUT CURRENT α LIGHT INTENSITY
VOUT
6
GND
2
PHOTODIODE
ARRAY
4 REXT
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, digital
camera
• Industrial and medical light sensing
Pinout
ISL29101
(6 LD ODFN)
TOP VIEW
VDD 1
6 VOUT
GND 2
NC 3
THERMAL
PAD*
5 NC
4 REXT
*THERMAL PAD CAN BE CONNECTED TO GND OR
ELECTRICALLY ISOLATED
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
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
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