Description

The CJMCU-2561 is a light-to-digital converter that accurately measures ambient light intensity and converts it into a digital signal. It features a dual photodiode setup (broadband + infrared) and integrates two ADC channels for precise conversion of light into a 16-bit digital output. The device communicates via I2C or SMBus, making it easy to interface with microcontrollers. With a dynamic range of 1,000,000:1, low power consumption, and programmable interrupt functionality, the CJMCU-2561 is ideal for applications like lux meters, display panels, power-saving lighting, and machine vision.

Key Features & Benefits

• High Dynamic Range: 16-bit resolution and 1,000,000:1 dynamic range for accurate light intensity sensing.
• Dual Photodiodes: Broadband (visible + infrared) and infrared-only photodiodes for precise light measurements.
• I2C/SMBus Interface: Easy integration with microcontrollers for seamless communication.
• Low Power Consumption: Typical active power of just 0.75 mW, with power-down mode for energy efficiency.
• Programmable Interrupts: User-defined thresholds for interrupt generation based on light intensity changes.

Applications

• Lux Meters: Measures ambient light levels for various lighting applications.
• Display Panels: Adjusts screen brightness based on surrounding light.
• Power Saving: Optimizes power consumption in devices by controlling lighting intensity.
• Machine Vision: Light sensing for industrial or robotic vision systems.
• Security Lighting: Controls lighting based on ambient light conditions.

Specifications

• Supply Voltage: 2.7V to 3.7V
• Resolution: 16-bit
• Interface: I2C (400kHz) or SMBus (100kHz)
• Operating Temperature: -30°C to 70°C
• Power Consumption: 0.75 mW (typical)
• Digital Output Voltage: -0.5V to 3.8V
• Interrupt: Programmable upper and lower thresholds