光宝LTR-578ALS-01

1. Description


The LTR-578ALS-01 is an integrated low voltage I2C ambient light sensor (ALS), and 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

?	I2C 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
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