Rainbow Electronics MAX9635 - Manual

________________________________________________________________ _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.
Industry’s Lowest-Power
Ambient Light Sensor with ADC MAX9635
19-5284; Rev 0; 8/10
General Description
The MAX9635 ambient light sensor features an I 2 C 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
UTDFN-Opto 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_UTDFN-Opto
S V CC _=_1.7V_to_3.6V
S I CC _=_0.65µA_Operating_Current
S -40 NC_to_+85NC_Temperature_Range
Ordering Information
+Denotes a lead(Pb)-free/RoHS-compliant package.
*EP = Exposed pad.
Block Diagram
EVALUATION
_KIT
AVAILABLE
PART PIN-PACKAGE TEMP_RANGE
MAX9635EDT+ 6 UTDFN-Opto-EP* -40NC to +85NC
DIGITAL
SIGNAL
PROCESSING
6-BIT RANGE
CDR, TIM
CONTROL
VISIBLE +IR
PHOTODIODE
IR
PHOTODIODE
I 2 C
V CC
MAX9635
N
GND
AO
SCL
SDA
INT
16-BIT
ADC
16-BIT
ADC
ABRIDGED