SKU: SENS-3233
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Lite-On LTR-303ALS-01 DFN-6 Ambient Light Sensor ROHS

₹39.00 (Inclusive of all taxes)
Out of Stock

The Lite-On LTR-303ALS-01 is a digital ambient light sensor in a compact DFN-6 package, designed for automatic display brightness control and power management in portable electronics, IoT devices, and industrial panels. It features I2C digital output for easy integration with microcontrollers like Arduino, ESP32, and Raspberry Pi.

Features

  • High-sensitivity digital ambient light sensor with I2C interface
  • Wide dynamic range with automatic gain control for optimal performance
  • Human-eye spectral response with integrated IR rejection filter
  • Ultra-low power consumption for battery-powered applications
  • Compact DFN-6 (2x2mm) package for space-constrained designs

Out of stock

Description

The LTR-303ALS-01 from Lite-On is a sophisticated digital ambient light sensing (ALS) solution. It employs a photodiode array with a spectral response closely matched to the human eye, enhanced by an integrated infrared blocking filter to ensure accurate lux measurement under various lighting conditions, including artificial light. The sensor incorporates automatic gain selection to achieve a wide dynamic measurement range without external components.

Communication is handled via a standard I2C digital interface, providing direct lux readings and simplifying integration into embedded systems. Its robust design supports an operating temperature range from -30°C to 75°C, making it suitable for demanding environments. This sensor is ideal for implementing adaptive brightness control to enhance user experience and extend battery life in consumer and industrial electronics.

Key Features

  • Digital output ambient light sensor with I2C interface for precise lux measurement.
  • Human-eye photopic response curve with integrated IR and UV rejection.
  • Automatic gain control provides a wide dynamic range from dark to bright sunlight.
  • Ultra-low active and standby current consumption for energy-efficient designs.
  • Compact, lead-free DFN-6 surface-mount package (2mm x 2mm).
  • RoHS compliant construction for environmentally conscious manufacturing.
  • Wide operating temperature range (-30°C to 75°C) for reliable performance.
  • High-value build optimized for cost-sensitive, high-volume applications.

Applications

  • Automatic display brightness adjustment in smartphones, tablets, and laptops.
  • Backlight dimming control for automotive instrument clusters and infotainment systems.
  • Ambient light monitoring in IoT sensors and smart home devices for energy savings.
  • Brightness optimization in industrial HMIs and control panels under variable lighting.
  • Integration into portable medical devices for improved screen readability.

Technical Specifications

Manufacturer Part NumberLTR-303ALS-01
BrandLite-On
Sensor TypeDigital Ambient Light Sensor (ALS)
InterfaceI2C
Package / CaseDFN-6 (2mm x 2mm)
Number of Pins6
Operating Temperature-30°C to 75°C
Spectral ResponseHuman eye photopic response
FeaturesIR Filter, Automatic Gain Control, Low Power
ComplianceRoHS

Frequently Asked Questions

What is the communication interface for the LTR-303ALS-01 sensor?

The LTR-303ALS-01 uses a standard I2C digital communication interface. This allows for easy connection to microcontrollers like Arduino, ESP32, or Raspberry Pi using just two wires (SCL and SDA), simplifying circuit design and providing direct digital lux readings.

What is the operating voltage range for this ambient light sensor?

While the exact voltage range is not specified in the provided data, typical digital ambient light sensors like this often operate at 2.5V to 3.6V for the core and I2C bus. It is crucial to consult the official Lite-On LTR-303ALS-01 datasheet for the absolute maximum ratings and recommended operating conditions before designing it into a circuit.

How does the IR filtering improve sensor accuracy?

The integrated infrared (IR) rejection filter is essential for accurate ambient light measurement. It blocks infrared light, which is invisible to the human eye but can be abundant in sunlight and artificial light sources. By filtering IR, the sensor's spectral response closely matches human vision, ensuring lux readings are perceptually correct for applications like display brightness control.

Can this sensor operate in outdoor or industrial environments?

Yes, the LTR-303ALS-01 is designed for robust performance with an operating temperature range of -30°C to 75°C. This makes it suitable for applications exposed to varying environmental conditions, such as automotive interiors, outdoor kiosks, and industrial control panels, where reliable light sensing is required.

Package Includes

  • 1 x Lite-On LTR-303ALS-01 Ambient Light Sensor (DFN-6 package)

Additional Information

Weight 0.01 kg