MAX44000

www.DataSheet.co.kr 19-5859; Rev 0; 10/11 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 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. The IC 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. S VDD = 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 Features S Tiny, 2mm x...