CJMCU-3001 OPT3001 Digital Ambient Light Sensor
Product Description
The CJMCU-3001 OPT3001 is a high-performance digital ambient light sensor designed for accurate measurement of light intensity in Lux. The OPT3001 features a spectral response closely matched to the human eye, providing more meaningful light measurements than conventional LDR-based sensors.
Its integrated infrared rejection helps prevent invisible IR radiation from significantly affecting the measured light level. With a wide 0.01–83,000 Lux measurement range, automatic gain control, low power consumption, and a digital I²C interface, the sensor is suitable for precision light-monitoring applications.
Key Advantages
- Human-Eye-Matched Response: Designed to closely follow the spectral response of the human eye.
- Excellent IR Rejection: Provides >99% typical infrared rejection, reducing measurement errors caused by infrared radiation.
- Wide Measurement Range: Measures light levels from 0.01 Lux up to 83,000 Lux.
- Automatic Gain Ranging: Automatically adjusts the measurement range according to the light level.
- Digital Output: Provides direct digital Lux readings through the I²C interface, eliminating the need for an external ADC.
- Very Low Power Consumption: Approximately 1.8 µA typical operating current, making it suitable for battery-powered devices.
- Compact Module: Easy to integrate into embedded systems, IoT devices, and portable electronics.
Technical Specifications
| Parameter | Specification |
|---|---|
| Module | CJMCU-3001 |
| Sensor IC | OPT3001 |
| Sensor Type | Digital Ambient Light Sensor |
| Measurement Range | 0.01–83,000 Lux |
| Interface | I²C / SMBus |
| Supply Voltage | 1.6–3.6 V |
| IR Rejection | >99% Typical |
| Spectral Response | Human-eye matched |
| Peak Sensitivity | Approximately 550 nm |
| Operating Temperature | −40°C to +85°C |
| Typical Operating Current | 1.8 µA |
| Pins | VCC, GND, SCL, SDA, INT, ADDR |
Applications
- Smart lighting systems
- Automatic display brightness control
- IoT devices
- Smart home systems
- Portable and battery-powered equipment
- Light-level monitoring
- Industrial and embedded systems
- Cameras and electronic displays
- Environmental monitoring
Why Choose OPT3001?
Compared with a conventional LDR or basic analog light sensor, the OPT3001 provides a digital Lux measurement, a wide measurement range, automatic gain ranging, a response closer to the human eye, and strong IR rejection. This makes it a better choice when consistent and meaningful ambient-light measurements are required.
