Proximity sensor offers detection distance of 30cm

The VCNL3040, developed by the Optoelectronics group of Vishay Intertechnology, combines IR emitter, photodetectors for proximity, LED driver, amplifiers, ADC circuitry and proprietary signal processor in a compact, low profile, QFN package. 

The sensor features a programmable interrupt feature and supports the I²C bus communication interface, offering wake-up functionality for the microcontroller, thereby reducing processing overhead and increasing power saving.

With selectable 12bit and 16bit outputs, the device also features intelligent cancellation to eliminate crosstalk. 

An innovative smart persistence scheme ensures accurate sensing and faster response time.

The emitter wavelength peaks at 940nm and has no visible red tail. 

The VCNL3040 provides an excellent temperature compensation facility, keeping output stable, across the range from -40 to +85^oC. 

Operating voltage ranges from 2.5 to 3.6V.

The device is designed specifically to meet the low height requirements of smartphones, digital cameras, and tablet PC applications. 

However, it is equally suitable for object and collision detection in a wide range of industrial, smart home and workplace applications. 

Typical functions include collision detection in robots and toys, activating displays in printers, de-activating touch screens on smartphones, vehicle occupancy in parking bays and automatic appliance operation in washrooms.

“Not only does this sensor have an increased sensing distance – some 33% greater than previous generation devices – it is also highly integrated, yet compact, opening up new applications.  Our customers will find it particularly easy to design-in this device, and will see improved efficiency and faster reaction time,” said Felix Corbett, Director Supplier Marketing Europe Passives & Discretes at TTI, Inc.

Free of charge samples ex stock are now available from TTI Europe.