LTR-559ALS: Integrated Ambient Light, Proximity Sensors and IR LED (3-in-1)

The LTR-559ALS is an integrated low voltage I2C digital light sensor [ALS] 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. It provides a linear response over a wide dynamic range from 0.01 lux to 64k lux and is well suited to applications under high ambient brightness. With built-in proximity sensor (emitter and detector), LTR-559ALS 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.

 

·      I²C interface (Fast Mode @ 400kbit/s)

·      Ultra-small ChipLED package

·      Built-in temperature compensation circuit

·      Low active power consumption with standby mode

·      Supply voltage range from 2.4V to 3.6V capable of 1.7V logic voltage

·      Operating temperature range from -30°C to +70°C

Ø Immunity to IR / UV Light Source

Ø Automatically rejects 50 / 60 Hz lightings flicker

Ø 6 dynamic range from 0.01 lux to 64k lux

Ø 16-bit effective resolution

·      Proximity Sensor

Ø Built-in LED driver, emitter and detector

Ø Programmable LED drive settings

Ø 11-bit effective resolution

Ø High ambient light suppression

·      Consumer Devices: LCD/PDP TV backlight systems, Cameras, Personal Navigation Device, Digital Photo Frame