Specifications

65Sensors: Featured Products
Featured Products
Save Power, Reduce System Cost and
Complexity with an Integrated Ambient
Light Sensor
MAX44009
The MAX44009 is a highly integrated ambient light sensor with a digital
output. Its 1µA current consumption saves power in the system. The
integrated ADC and an I
2
C communication channel reduce cost by eliminating
external components. Space is also conserved, as this integrated solution
has a 2mm x 2mm footprint. The added functionality of an adaptive gain
block makes it easier to integrate this component into a system.
Benefits
• Minimizes power requirements
◦ Ultra-low 1µA operating current
consumption
◦ V
CC
is 1.7V to 3.6V and eliminates
the need for different supply rails
• Adaptable for a wide variety of
applications
◦ Wide 0.03lx to 130,000lx sense range
◦ Adjustable conversion time provides
flexibility
• High integration simplifies system
design
◦ 6-bit adaptive gain control for
autoranging reduces design
complexity
◦ Optical filters provide an optical
response similar to the human eye,
and block IR and UV light
DIGITAL
ENGINE
6-BIT RANGE
CDR, TIM
CONTROL
VISIBLE +IR
PHOTODIODE
IR
PHOTODIODE
I
2
C
V
CC
N
GND
AO
SCL
SDA
INT
16-BIT
ADC
16-BIT
ADC
MAX44009
Typical operating circuit for the 22-bit MAX44009 integrated ambient light sensor.