Rainbow Electronics MAX44000 - 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.
MAX44000
Ambient and Infrared Proximity Sensor
General Description
The MAX44000 combines a wide-dynamic range ambient
light sensor with an integrated infrared proximity sensor. The
IC is a perfect solution for touch-screen portable devices.
The IC can consume as low as 11µA (time averaged) in
ambient light sensing plus proximity sensing, including
external IR LED current.
The on-chip ambient sensor has the ability to make wide
dynamic range 0.03 lux to 65,535 lux measurements. An
on-chip IR proximity detector is matched with an inte-
grated IR LED driver. All readings are available on an
I
2 C communication bus. A programmable interrupt pin
minimizes the need to poll the device for data, freeing
up microcontroller resources, reducing system software
overhead, and ultimately, reducing power consumption.
The IC is designed to drive an external IR LED and can
operate from a V
DD of 1.7V to 3.6V. It consumes just 5µA
operating current when only the ambient light sensor is
enabled and 7µA when the proximity receiver and driver
are enabled.
Applications
Smartphones
Accessories
Industrial Sensors
Presence Detection
Features
S Tiny, 2mm x 2mm x 0.6mm UTDFN-Opto Package
S
V
DD
= 1.7V to 3.6V
S Low-Power Operation
5µA in Ambient Mode
7µA in Ambient Plus Proximity Mode
70µA in Ambient Plus Proximity Mode,
Including 100mA LED Current
S
Excellent Light Source Matching
Programmable Green and IR Channel Gains
S Integrated Single-Pulse IR LED Driver
10mA to 110mA Programmable Range
Internal Ambient Cancellation
S -40NC to +105NC Temperature Range
19-5859; Rev 0; 10/11
Typical Application Circuit appears at end of data sheet.
Simplified Block Diagram
+Denotes a lead(Pb)-free/RoHS-compliant package.
*EP = Exposed pad.
Ordering Information
14-/8-BIT
IR LED
DRV
VIS + IR
(ALS)
IR (ALS)
IR (PRX)
V LED
V DD
I 2 C
14-BIT
ALS
PGA
AMBIENT
CANCELLATION
ALS
PGA SDA
SCL
INT
V DD
MAX44000
GND
MICROCONTROLLER
GND
PRX
PGA
PART TEMP RANGE PIN-PACKAGE
MAX44000GDT+ -40NC to +105NC 6 OTDFN-EP*