Specifications

Sensors
Current, light, and proximity sensing
78 Maxim Industrial Solutions
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
MAX9635*
The MAX9635 is a highly integrated ambient-light sensor with 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, because
this integrated solution has a 2mm x 2mm footprint. The added func-
tionality of an adaptive gain block makes it easier to integrate this
component into a system.
Save power, reduce system cost and complexity with a 22-bit, integrated
ambient-light sensor
16-BIT
ADC
PHOTODIODE
WITH OPTICAL FILTER
AND IR/UV REJECTION
V
CC
GND
6-BIT
ADAPTIVE
GAIN
DIGITAL LOGIC
SIGNAL
PROCESSING
AND I
2
C
SDA
SCL
A0
INT
N
MAX9635*
+
-
Typical operating circuit for the 22-bit MAX9635 integrated ambient-light sensor.
*Future product—contact factory for availability.