Description

The CJMCU-101 is a light sensor module based on the OPT101 chip, which integrates a photodiode and transimpedance amplifier in a single package. This combination simplifies the design, reduces noise, and eliminates many of the issues present in discrete designs, such as leakage current and stray capacitance effects. The module provides an analog output voltage that is linearly proportional to the light intensity that hits the photodiode. The CJMCU-101 operates across a wide voltage range of 2.7V to 36V, making it highly versatile for both low-voltage battery-powered devices and higher-voltage systems. With a low quiescent current of just 120μA, the module is perfect for energy-efficient applications. It is particularly suited for use in systems where precise and linear light intensity measurement is required.

Key Features & Benefits

Integrated Design: Combines photodiode and transimpedance amplifier in a single chip, simplifying design and improving signal integrity.
Wide Voltage Range: Operates from 2.7V to 36V, making it compatible with both low-voltage and higher-voltage systems.
Low Power Consumption: Consumes just 120μA quiescent current, ideal for battery-powered applications.
High Responsivity: 0.45 A/W at 650 nm, ensuring accurate and efficient light measurements.
Compact Size: The 2.29mm x 2.29mm photodiode is small enough for compact designs.

Applications

Smoke Detectors: Detects light intensity changes caused by smoke particles.
Barcode Scanners: Used in scanning systems to detect barcodes based on reflected light.
Medical Devices: Measures light for devices like pulse oximeters and other medical sensors.
Proximity Sensors: Detects objects or proximity based on light intensity variations.
Laboratory & Photographic Analyzers: Used for light measurement in scientific and imaging applications.

Specifications

Operating Voltage: 2.7V to 36V (single supply)
Photodiode Size: 2.29mm x 2.29mm (the photodiode chip size)
Internal Feedback Resistor: 1 MΩ
Quiescent Current: 120μA
Responsivity: 0.45 A/W at 650nm
Bandwidth: 14 kHz (with 1 MΩ feedback resistor)
Operating Temperature Range: 0°C to 70°C

MAECENAS IACULIS

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