MAX44000

Ambient and Infrared Proximity Sensor

Industry's Lowest Power Integrated Ambient Light and Proximity Sensor Provides Reliable Measurements


Description

MAX44000 combines a wide-dynamic range ambient light sensor with an integrated infrared proximity sensor, making it a perfect solution for touch-screen portable devices.

MAX44000 consumes as little as 11µA (time averaged) in ambient light sensing plus proximity sensing, including external IR LED current.

The on-chip ambient light sensor is capable of wide dynamic range 0.03 lux to 65,535 lux measurements. An on-chip IR proximity detector is matched with an integrated IR LED driver. All readings are available on an I²C 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.

MAX44000 is designed to drive an external IR LED and can operate from a VDD 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.

MAX44000: Typical Applications Circuit MAX44000: Typical Applications Circuit Enlarge+

Key Features

  • Tiny, 2mm x 2mm x 0.6mm UTDFN-Opto Package
  • VDD = 1.7V to 3.6V
  • Low-Power Operation
    • 5µA in Ambient Mode
    • 7µA in Ambient Plus Proximity Mode
    • 70µA in Ambient Plus Proximity Mode, Including 100mA LED Current
  • Excellent Light-Source Matching
    • Programmable Green and IR Channel Gains
  • Integrated Single-Pulse IR LED Driver
    • 10mA to 110mA Programmable Range
    • Internal Ambient Cancellation
  • -40°C to +105°C Temperature Range

Applications/Uses

  • Accessories
  • Industrial Sensors
  • Presence Detection
  • Smartphones
Part Number Sensor Type ISUPPLY
(µA)
VSUPPLY
(V)
VSUPPLY
(V)
Output Type Dynamic Range
(lx)
ADC Conv. Time
(msec)
ADC Conv. Time
(msec)
Oper. Temp.
(°C)
Budgetary
Price
typ min max min max See Notes
MAX44000 
ALS
Proximity
7 1.7 3.6 I2C 0.03 to 65,535 1.56 100 -40 to +105 $1.65 @1k
See All Optical Sensors (6)
Pricing Notes:
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific and version-specific prices and delivery, please see the price and availability page or contact an authorized distributor.


MAX44000EVSYS: Evaluation System for the MAX44000
MAX44000PMB1: MAX44000PMB1 Peripheral Module
MAXPMBAE: Maxim Analog Essentials Collection of Peripheral Modules

Tools & Models

MAX44000 IBIS Model

 

Related Resources


MAX31856
Precision Thermocouple to Digital Converter with Linearization

  • Provides High-Accuracy Thermocouple Temperature Readings
  • Internal Cold-Junction Compensation Minimizes System Components
  • ±45V Input Protection Provides Robust System Performance