Product Specification

LTR-91400 Ambient Light Sensor, Gesture Sensor and Proximity Sensor Description
LTR-91400is an integrated low voltage I2C ambient light sensor [ALS], gesture sensor [GS] and proximity sensor [PS], with built-in emitter in a single miniature chipled lead-free surface mount package. 

This sensor converts light intensity to a digital output signal capable of direct I2C interface. The gesture sensor provides object motion direction information based on the reflected IR light detected by the 4 photodiodes for East, West, North and South direction. Besides, ambient light sensor provides a linear response over a wide dynamic range and is well suited to applications under high ambient brightness. With built-in proximity sensor (emitter and detector), it offers the feature to detect object at a user configurable distance.

The sensor supports an interrupt feature that removes the need to poll the sensor for a reading which improves system efficiency. The sensor also supports several features that help to minimize the occurrence of false triggering. This CMOS design and factory-set one time trimming capability ensure minimal sensor-to-sensor variations for ease of manufacturability to the end customers.

LTR-91400 Ambient Light Sensor, Gesture Sensor and Proximity Sensor Application
To control brightness of the display panel, and/or detection of object or motion in mobile, computing, and consumer devices.

LTR-91400 Ambient Light Sensor, Gesture Sensor and Proximity Sensor Features
? I2C interface (Standard mode @100kHz or Fast mode @400kHz)
? Gesture, Ambient Light, and Proximity Sensing in one ultra-small ChipLED package
? Very low power consumption with sleep mode capability
? Operating voltage ranges: 2.4V to 3.6V
? Operating temperature ranges: -30 to +70°C
? Programmable interrupt function for ALS, PS, and GS.
? Built-in temperature compensation circuit
? RoHS and Halogen free compliant
?   GS Features
    - 4 photodiodes for East, West, North and South direction
    - 32 dataset storage FIFO
    - 8-bit effective resolution
    - Programmable LED drive settings
    - Programmable crosstalk correction 
?   ALS Features
    - 16-bits effective resolution
    - Wide dynamic range of 1:15,000,000 with linear response
    - Close to human eye spectral response
    - Automatic rejection for 50Hz/60Hz lighting flicker
?   PS Features
    - Built-in LED driver and detector
    - 11-bit effective resolution
    - Programmable LED drive settings
    - Programmable crosstalk correction 
    - High Ambient Light Suppression

LTR-91400 Ambient Light Sensor, Gesture Sensor and Proximity Sensor Rating and Specification
Absolute Maximum Rating at Ta=25°C