SKU: SENS-3176
📋 GST Invoice Available

OPT3001 Ambient Light Sensor Module Proxy - I2C Interface

₹175.00 (Inclusive of all taxes)
Out of Stock

The OPT3001 Ambient Light Sensor Module is a high-precision, low-power optical sensor designed to measure ambient light intensity with a spectral response closely matching the human eye. Featuring an I2C digital interface, it is compatible with 3.3V microcontrollers like Arduino, Raspberry Pi, ESP32, and STM32 for smart lighting and display control applications.

Features

  • Human-eye matched spectral response with >99% IR rejection
  • Ultra-wide measurement range from 0.01 Lux to 83,000 Lux
  • 23-bit effective dynamic range with automatic full-scale selection
  • Ultra-low operating current of 1.8µA (typical) for battery-powered designs
  • Wide supply voltage range from 1.6V to 3.6V with 5.5V tolerant I/O

Out of stock

Description

The OPT3001 Ambient Light Sensor Module integrates Texas Instruments’ high-performance optical sensor IC on a compact breakout board. It employs a precision photodiode and an advanced optical filter to achieve a spectral response that closely approximates the human eye’s sensitivity, while rejecting over 99% of infrared light for accurate Lux measurements under various light sources. The sensor’s internal 23-bit ADC and automatic full-scale ranging logic ensure optimal resolution across its entire 0.01 to 83,000 Lux range without manual configuration.

Designed for energy-efficient operation, the module consumes a mere 1.8µA typical current, making it ideal for always-on sensing in portable and battery-powered devices. Its digital I2C interface provides easy integration with microcontrollers, and the integrated interrupt system can be configured to alert the host processor based on user-defined light thresholds, minimizing system polling and further reducing power consumption.

Key Features

  • Precision optical sensing with human-eye matched photopic response
  • Integrated infrared rejection filter (>99%) for accurate Lux readings
  • Automatic full-scale selection across 12 binary-weighted ranges
  • Ultra-low power consumption ideal for IoT and wearable devices
  • Robust digital I2C interface with 5.5V tolerant pins
  • Wide operating temperature range from -40°C to +85°C
  • Compact module footprint for space-constrained designs
  • Flexible interrupt function for threshold-based system wake-up

Applications

  • Automatic display brightness control for smartphones, tablets, and laptops
  • Smart lighting systems and IoT devices for adaptive ambient light adjustment
  • Energy management in building automation based on daylight harvesting
  • Backlight dimming control for automotive instrument clusters and infotainment systems
  • Light sensing in wearable devices and portable electronics for power optimization

Technical Specifications

Manufacturer Part NumberOPT3001
Sensor TypeAmbient Light Sensor (ALS)
Measurement Range0.01 Lux to 83,000 Lux
Dynamic Range23-bit effective
Spectral ResponseHuman-eye matched (Photopic) with >99% IR rejection
InterfaceI2C Digital
Supply Voltage Range1.6V to 3.6V
Operating Current1.8µA (typical)
Operating Temperature-40°C to +85°C
Module Dimensions (LxW)18mm x 14mm
Module WeightApprox. 3g

Frequently Asked Questions

What is the operating voltage range for the OPT3001 module?

The OPT3001 module operates from a supply voltage range of 1.6V to 3.6V. Its digital I/O pins are 5.5V tolerant, allowing safe interfacing with 5V microcontroller logic levels without requiring a level shifter.

How do I interface this sensor with an Arduino or Raspberry Pi?

The module communicates via the I2C protocol. Connect the VCC pin to 3.3V, GND to ground, SDA to the I2C data line, and SCL to the I2C clock line on your microcontroller. Use the official Texas Instruments library or compatible open-source libraries for reading Lux values.

How does the sensor achieve accurate Lux measurements?

The OPT3001 integrates a precision optical filter that blocks over 99% of infrared light, ensuring its spectral response closely matches the human eye (photopic response). This, combined with its automatic full-scale ranging across 23 bits of dynamic range, provides accurate Lux readings under diverse lighting conditions, including sunlight and artificial light.

Is this sensor suitable for battery-powered projects?

Yes, its ultra-low typical operating current of 1.8µA makes it exceptionally suitable for battery-powered and energy-harvesting applications. The integrated interrupt function allows the sensor to wake the main microcontroller only when predefined light thresholds are crossed, further minimizing system power consumption.

Package Includes

  • 1 x OPT3001 Ambient Light Sensor Module
  • 2 x Header Pin Strips

Additional Information

Weight 0.003 kg
Dimensions 1.8 × 1.4 cm