MAX9635_11 Datasheet, PDF (1/20 Pages) Maxim Integrated Products – Industry’s Lowest-Power Ambient Light Sensor with ADC

19-5284; Rev 1; 2/11
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Industry’s Lowest-Power
Ambient Light Sensor with ADC
General Description
The MAX9635 ambient light sensor features an I2C digi-
tal output that is ideal for a number of portable applica-
tions 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
OTDFN package.
Applications
Tablet PCs/Notebook Computers
TVs/Projectors/Displays
Digital Lighting Management
Portable Devices
Cellular Phones/Smartphones
Security Systems
Features
S Wide 0.045 Lux to 188,000 Lux Range
S Small, 2mm x 2mm x 0.6mm OTDFN
S V_CC = 1.7V to 3.6V
S I_CC = 0.65µA Operating Current
S -40­NC to +85NC Temperature Range
Ordering Information
PART
PIN-PACKAGE
TEMP RANGE
MAX9635EDT+
6 OTDFN-EP*
-40NC to +85NC
+Denotes a lead(Pb)-free/RoHS-compliant package.
*EP = Exposed pad.
Block Diagram
VISIBLE +IR
PHOTODIODE
MAX9635
IR
PHOTODIODE
16-BIT
ADC
6-BIT RANGE ^DIGITAL
CDR, TIM
SIGNAL
CONTROL ^PROCESSING
16-BIT
ADC
V_CC
SDA
SCL
I2C
AO
INT
N
GND
________________________________________________________________ Maxim Integrated Products   1
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.