LTR-390UV UV & Ambient Light Sensor Module - I2C Digital Output
The LTR-390UV sensor module integrates a dual-channel UV and ambient light sensor with an I2C digital interface, providing high-resolution spectral data for Arduino, Raspberry Pi, ESP32, and other 3.3V/5V microcontroller systems.
Features
- Dual-channel sensor for UV (280-430nm) and ambient light (450-700nm) detection.
- High-resolution digital output with programmable 13 to 20-bit resolution.
- I2C interface (100kHz/400kHz) compatible with 3.3V and 5V logic systems.
- Integrated programmable interrupt with hysteresis for stable event detection.
- Compact 24mm x 9mm module with standard 2.54mm 4-pin header.
Out of stock
The LTR-390UV module incorporates a monolithic CMOS sensor that simultaneously measures ultraviolet (UVA) and ambient visible light. It utilizes a photodiode array with optical filters to provide separate digital readings for UV index and illuminance (lux), enabling precise environmental light analysis. The sensor’s on-chip analog-to-digital converter and programmable gain settings allow for optimized performance across a wide dynamic range.
Communication is handled via a standard I2C bus, supporting both standard (100kHz) and fast (400kHz) modes. The module includes reverse polarity protection on its supply lines and operates from a single 3.3V to 5V DC supply, drawing minimal quiescent current. Its integrated interrupt engine can be configured to trigger on specific light threshold crossings, reducing microcontroller polling overhead for power-sensitive applications.
Additional Information
| Weight | 0.003 kg |
|---|---|
| Dimensions | 2.4 × 0.9 cm |
