Rainbow Electronics MAX9635 User Manual
19-5284; Rev 0; 8/10
ABRIDGED
EVALUATION
AVAILABLE
KIT
Ambient Light Sensor with ADC
General Description
The MAX9635 ambient light sensor features an I2C digital output that is ideal for a number of portable applications 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 supply 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.
Industry’s Lowest-Power
Features
S Wide 0.045 Lux to 188,000 Lux Range
S Small, 2mm x 2mm x 0.6mm UTDFN-Opto
S VCC = 1.7V to 3.6V
S ICC = 0.65µA Operating Current
S -40 NC to +85NC Temperature Range
Ordering Information
PART PIN-PACKAGE TEMP RANGE
MAX9635EDT+ 6 UTDFN-Opto-EP*
+Denotes a lead(Pb)-free/RoHS-compliant package.
*EP = Exposed pad.
-40NC to +85NC
MAX9635
Applications
Tablet PCs/Notebook Computers
TVs/Projectors/Displays
Digital Lighting Management
Portable Devices
Cellular Phones/Smartphones
Security Systems
Block Diagram
V
CC
VISIBLE +IR
PHOTODIODE
MAX9635
IR
PHOTODIODE
16-BIT
ADC
16-BIT
ADC
6-BIT RANGE
CDR, TIM
CONTROL
DIGITAL
SIGNAL
PROCESSING
2
I
GND
SDA
SCL
C
AO
INT
N
_______________________________________________________________ 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.
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