CJMCU-3001 OPT3001 Digital Ambient Light Sensor

Description

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.

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