Description
The 7Semi OPT3004 Digital Ambient Light Sensor Breakout is a high-accuracy ambient light sensing module based on the Texas Instruments OPT3004 sensor. It measures visible light in lux with response characteristics closely matching the human eye, while strongly rejecting infrared interference. The module communicates via I²C and features a Qwiic / STEMMA QT connector for easy plug-and-play integration, making it suitable for smart lighting, display control, IoT environmental sensing, and automation applications.
Technical Specification:
- Light Measurement Range: 0.01 lux to 83,000 lux
- Sensor Type: Digital ambient light sensor with photopic human-eye response
- Dynamic Range: 23-bit effective resolution with automatic gain control
- Interface: I²C digital communication
- Supply Voltage: 1.6 V to 3.6 V
- Operating Current: ~1.8 µA typical in measurement mode
- Operating Temperature: –40 °C to +85 °C
- IR Rejection: >99% IR filtering for accurate real-world light detection
- Interrupt Pin: Programmable threshold interrupt output
- Package Size: Approximately 2.0 × 2.0 × 0.65 mm (sensor die)
- Connector Support: STEMMA QT / Qwiic and header pin pads
Features:
- High-accuracy measurement of visible light in lux
- Spectral response closely matched to the human visual range
- Wide dynamic sensing range suitable for low-light and outdoor conditions
- IR light rejection for improved accuracy under sunlight or artificial lighting
- Ultra-low-power operation for battery-powered devices
- I²C interface for easy integration with microcontrollers and SBCs
- Qwiic / STEMMA QT plug-and-play connectivity
- Compact breakout board ideal for rapid prototyping
Applications:
- Smart lighting automation and daylight-based brightness control
- Display backlight adjustment for laptops, mobile devices and monitors
- IoT ambient light sensing in smart-home automation
- Robotics and camera exposure control systems
- Environmental monitoring and data-logging devices
- Energy-efficient lighting and power-saving systems