Shenzhen Mingjiada Electronics Co., Ltd. offers brand-new, genuine Vishay VCNL4040M3OE high-performance optical sensors in stock. This device integrates an ambient light sensor (ALS), a proximity sensor (PS), and a high-power infrared emitter (IRED) into a single ultra-compact SMD package. It supports an I²C digital interface and 16-bit high-resolution output, making it an ideal optical sensing solution for smartphones, tablets, industrial control systems, and IoT devices.
Product Overview: 2-in-1 Integrated Optical Sensor
The VCNL4040M3OE is a highly integrated optical sensor introduced by Vishay, utilizing advanced CMOS technology to integrate a photodiode, amplifier, and analog-to-digital conversion circuitry onto a single chip. This device simultaneously performs both ambient light detection and proximity detection within a single package. Its built-in high-power IRED eliminates the need for an external LED, effectively simplifying circuit design and saving PCB space.
The sensor outputs digital signals via an I²C interface, enabling direct communication with the host MCU/CPU without the need for complex analog signal conditioning circuits. Its 16-bit high-resolution ALS can detect faint light as low as 0.004 lx, and the proximity detection range extends up to 200 mm, making it suitable for a wide range of applications, from dark rooms to bright sunlight.
Key Specifications
Brand: Vishay
Model: VCNL4040M3OE
Sensing Type: Ambient Light (ALS) + Proximity (PS)
Ambient Light Resolution: 16-bit
Proximity Output Resolution: Programmable 12/16-bit
Proximity Detection Distance: Up to 200 mm
Detection Wavelength: 550 nm (ALS peak) / 940 nm (IRED)
Interface Type: I²C (SMBus-compatible)
Operating Voltage: 2.5V ~ 3.6V
Quiescent Current: 300µA (typical)
Operating Temperature: -40°C ~ +85°C
Package: 8-SMD module (4mm × 2mm × 1.1mm)
Moisture Sensitivity Level: MSL 3 (168 hours)
RoHS RoHS 3 Compliant
Key Features and Functional Advantages
1. Filtron™ Patented Technology—Spectral Response Matching the Human Eye
The VCNL4040M3OE incorporates Vishay’s patented Filtron™ technology, which ensures the ambient light sensor’s spectral sensitivity closely matches the human eye’s response curve (peak wavelength 550 nm), effectively filtering out infrared and ultraviolet components. This feature ensures that the sensor provides accurate illuminance measurements under various light sources—including fluorescent lamps, incandescent lamps, sunlight, and white LEDs—while offering excellent background light suppression.
2. Intelligent Crosstalk Cancellation—More Accurate Proximity Detection
The proximity sensor incorporates an Intelligent Crosstalk Cancellation scheme that effectively eliminates false triggers caused by IRED reflections off the cover glass. It is also equipped with the Smart Persistence mechanism, which shortens response times, prevents false alarms, and enhances the reliability of proximity detection.
3. ALS and PS Operate in Parallel Without Interference
The ALS and PS can operate independently in parallel without interfering with each other, ensuring the system can simultaneously acquire ambient light intensity and object proximity information. This makes it suitable for complex applications requiring comprehensive assessment of both lighting and proximity conditions.
4. Programmable interrupt function reduces the load on the MCU
It supports setting upper and lower interrupt thresholds separately for the ALS and PS. Combined with adjustable persistence counts, this effectively reduces the polling load on the main control MCU and lowers the system’s overall power consumption.
5. Ultra-compact Package, Ideal for Space-Constrained Designs
Featuring a compact 4 mm × 2 mm × 1.1 mm SMD package, it integrates three key functions—IRED, ALS, and PS—within a minimal PCB footprint, making it particularly suitable for applications with stringent PCB space requirements, such as smartphones and wearable devices.
Typical Application Scenarios
The VCNL4040M3OE is suitable for:
Automatic screen brightness adjustment in smartphones and tablets
Smart home devices (smart panels, doorbells, lighting systems)
Optical detection in industrial automation equipment
Wear detection in wearable devices (watches, fitness bands)
IoT sensor nodes
Mingjiada Electronics: Brand-New, Genuine Products
Shenzhen Mingjiada Electronics Co., Ltd. consistently supplies the VCNL4040M3OE and the full range of Vishay optical sensor products. We promise:
100% Brand-New and Genuine—All products are sourced through official factory channels; we strictly exclude refurbished or loose new units
In-Stock Inventory — We maintain a constant supply at our Shenzhen warehouse, supporting both small-batch samples and large-volume orders
Fast Delivery — Relying on an efficient logistics system, we ensure timely delivery of orders
Contact Mingjiada Electronics
Phone: 86-755-83294757 / 13410018555
Email: sales@hkmjd.com
Address: Rooms 1239–1241, New Asia Guoli Building, Zhenzhong Road, Futian District, Shenzhen, Guangdong Province
(Note: Please inquire for specific prices and stock availability.)
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