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ISL29112 Datasheet

Analog Output Ambient Light Sensor

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DATASHEET
ISL29112
Low Power, <100 Lux Optimized, Analog Output Ambient Light Sensor
FN8836
Rev.1.00
May 8, 2017
The ISL29112 is a low cost, light-to-voltage silicon optical
sensor combining a photodiode array, a non-linear current
amplifier, and a micropower op amp on a single monolithic IC.
Similar to the human eye, the photodiode array has peak
sensitivity at 550nm and spans the wavelength range 400nm
to 600nm, rejecting UV and IR light. The input luminance range
is from 0.01 lux to 100 lux.
The integrated non-linear current amplifier boosts and
converts the photodiode signal into a square root output
format, extending dynamic range while maintaining excellent
sensitivity in dimly lit conditions. As such, the part is ideal for
measuring incident daylight when mounted behind heavily
smoked bezels used around displays or behind mirrors.
The device consumes minimum power. A dark current
compensation circuit minimizes the effect of temperature
dependent leakage currents in the absence of light, improving
the light sensitivity at low lux levels. The output gain has been
optimized to require a relatively low value external bias resistor
that falls within recommended automotive EMI limits. The
built-in 1µA op amp gives the ISL29112 an output voltage
driving advantage for heavier loads that can drive an ADC
directly.
The ISL29112 is housed in an ultra compact 2mmx2.1mm
ODFN plastic surface mount package. Operation is rated from
-40°C to +85°C.
Features
• Square root voltage output
• 0.01 lux to 100 lux range
• 1.8V to 3V supply range
• Close to human eye spectral response
• Fast response time
• Internal temperature compensation
• Good IR rejection
• Low supply current
• Operating temperature range -40°C to +85°C
• 6 Ld ODFN: 2mmx2.1mmx0.7mm
• Pb-free (RoHS compliant)
Applications
• Mobile devices: wearables, smart phone, PDA, GPS
• Computing devices: notebook PC, MacBook, tablets
• Consumer devices: LCD-TV, digital camera
• Industrial, home automation and medical light sensing
Related Literature
• For a full list of related documents, visit our website
- ISL29112 product page
VDD
1
LIGHT DATA
PROCESS
CURRENT
AMPLIFIER
OUTPUT CURRENT √LIGHT INTENSITY
GND
2
PHOTODIODE
ARRAY
FIGURE 1. SIMPLIFIED BLOCK DIAGRAM
VOUT
-6
+
4 REXT
FN8836 Rev.1.00
May 8, 2017
Page 1 of 9


Renesas Electronics Components Datasheet

ISL29112 Datasheet

Analog Output Ambient Light Sensor

No Preview Available !

ISL29112
Pin Configuration
ISL29112
(6 LD ODFN)
TOP VIEW
VDD 1
GND 2
NC 3
PAD
6 VOUT
5 NC
4 REXT
Pin Descriptions
PIN NUMBER
1
2
3, 5
4
PIN NAME
VDD
GND
NC
REXT
6 VOUT
- PAD
PIN DESCRIPTION
Voltage Supply (1.8V to 3V).
Ground
No connect
Connected to an external resistor to GND, setting the light-to-voltage scaling constant. A
REXT value of 100kΩis recommended.
Voltage Output.
Thermal Pad. The thermal pad can be connected to GND or electrically isolated.
Ordering Information
PART NUMBER
(Notes 1, 2, 3)
TAPE AND REEL
(UNITS)
PACKAGE
(RoHS Compliant)
PKG.
DWG. #
ISL29112IROZ-T7
3k 6 Ld ODFN
L6.2x2.1
ISL29112IROZ-T7A
250 6 Ld ODFN
L6.2x2.1
ISL29112IROZ-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), see product information page for ISL29112. For more information on MSL please see techbrief TB477.
FN8836 Rev.1.00
May 8, 2017
Page 2 of 9


Part Number ISL29112
Description Analog Output Ambient Light Sensor
Maker Renesas
Total Page 9 Pages
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