LTR-579ALS-WA

1. Description
The LTR-579ALS-01 is an integrated low voltage I2C ambient light sensor (ALS), and a proximity sensor (PS), with built-in
emitter in a single miniature chipled lead-free surface mount package.
The ALS provides a linear response over a wide dynamic range, which is well suited to applications under very low or bright
ambient brightness. Besides, with built-in proximity sensor, this sensor offers the feature to detect object at a user
configurable distance.
The sensor has a programmable interrupt with hysteresis to response to events and that removes the need to poll the sensor
for a reading which improves system efficiency. This CMOS design and factory-set one time trimming capability ensure
minimal sensor-to-sensor variations for ease of manufacturability to the end customers.
2. Features
? I 2 C interface (Standard mode @100kHz or Fast mode @400kHz)
? Ambient Light and Proximity Sensing in one ultra-small ChipLED package
? Very low power consumption with sleep mode capability
? Operating voltage ranges: 1.7V to 3.6V
? Operating temperature ranges: -40 to +85 oC
? Built-in temperature compensation circuit
? Programmable interrupt function for ALS and PS with upper and lower thresholds
? RoHS and Halogen free compliant
ALS Features
?  16 to 20 bits effective resolution
?  Wide dynamic range with linear response
?  Close to human eye spectral response
?  Automatic rejection for 50Hz/60Hz lighting flicker
PS Features
?  Built-in LED driver and detector
?  High ambient light suppression
?  8 , 9, 10, 11-bit(selectable) effective resolution
?  Cancellation of crosstalk
?  Programmable LED drive settings