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EVALUATION KIT AVAILABLE
AVAILAB
LE
MAX44009
Industry’s Lowest-Power
Ambient Light Sensor with ADC
General Description
The MAX44009 ambient light sensor features an I 2 C
digital output that is ideal for a number of portable appli-
cations such as smartphones, notebooks, and industrial
sensors. At less than 1μA operating current, it is the
lowest power ambient light sensor in the industry and
features an ultra-wide 22-bit dynamic range from 0.045
lux to 188,000 lux.
Low-light operation allows easy operation in dark-glass
applications.
The on-chip photodiode’s spectral response is optimized
to mimic the human eye’s perception of ambient light
and incorporates IR and UV blocking capability. The
adaptive gain block automatically selects the correct lux
range to optimize the counts/lux.
The IC is designed to operate from a 1.7V to 3.6V sup-
ply voltage range and consumes only 0.65μA in full
operation. It is available in a small, 2mm x 2mm x 0.6mm
UTDFN-Opto package.
Applications
Features
S Wide 0.045 Lux to 188,000 Lux Range
S Small, 2mm x 2mm x 0.6mm UTDFN-Opto
S V CC = 1.7V to 3.6V
S I CC = 0.65μA Operating Current
S -40 N C to +85 N C Temperature Range
S Device Address Options
1001 010x and 1001 011x
Ordering Information
Tablet PCs/Notebook Computers
TVs/Projectors/Displays
PART
MAX44009EDT+
PIN-PACKAGE
6 UTDFN-Opto-EP*
TEMP RANGE
-40 N C to +85 N C
Digital Lighting Management
Portable Devices
Cellular Phones/Smartphones
Security Systems Functional
Diagrams
+ Denotes a lead(Pb)-free/RoHS-compliant package.
* EP = Exposed pad.
Block Diagram
V CC
16-BIT
SDA
VISIBLE +IR
PHOTODIODE
MAX44009
ADC
6-BIT RANGE
CDR, TIM
CONTROL
DIGITAL
SIGNAL
PROCESSING
I 2 C
SCL
AO
INT
IR
16-BIT
ADC
N
PHOTODIODE
Pin Configurations appear at end of data sheet.
Functional Diagrams continued at end of data sheet.
UCSP is a trademark of Maxim Integrated Products, Inc.
GND
For pricing, delivery, and ordering information, please contact Maxim Direct
at 1-888-629-4642, or visit Maxim’s website at www.maxim integrated .com.
19-5719; Rev 0; 1/11
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