Vishay launches a new fully integrated ultra small proximity sensor with a standby current as low as 5 μ A
2024-01-25
The device adopts vertical cavity surface emitting lasers and intelligent dual I2C slave addresses, suitable for various battery powered consumer electronic applications such as true wireless stereo (TWS) earphones, virtual reality/augmented reality (VR/AR) helmets, etc
Recently, Vishay Intertechnology, Inc. announced that its optoelectronic products division has launched a fully integrated new proximity sensor - VCNL36828P, to improve the efficiency and performance of consumer electronics applications. Vishay Semiconductors VCNL36828P uses a vertical cavity surface emitting laser (VCSEL) to integrate photodiodes, specialized integrated circuits (ASICs), 16 bit ADCs, and intelligent dual I2C slave addresses in a small surface mount package of 2.0 mm x 1.0 mm x 0.5 mm.
Compared with the previous generation solution, the recently released proximity sensor packaging area has been reduced by 20%, and the standby current has been reduced by 20%, which is only 5% μ A. Sunshine offset increased by 40% to 140 klx. The sensor has a detection distance of 200 mm and a typical rated voltage of 1.8 V. The device has excellent proximity detection performance, while reducing power consumption and improving the efficiency of space limited and battery powered applications.
This new proximity sensor can be used for automatic wake-up and shutdown of screens on smartphones and smartwatches. In addition, it can detect whether users are wearing true wireless stereo (TWS) headphones, virtual reality/augmented reality (VR/AR) helmets, and smart glasses. To reduce the cost of these applications, the VCNL36828P intelligent dual I2C slave address can connect two proximity sensors without the need for a multiplexer.
The programmable interrupt function of the device facilitates designers to set the upper and lower limits of the interrupt threshold, thereby reducing continuous communication with the microcontroller. VCNL36828P uses intelligent cancellation technology to eliminate crosstalk, and its intelligent continuous design ensures accurate detection and accelerates response speed. The peak wavelength of VCSEL is 940 nm, with no visible "red tail". The sensor complies with RoHS and Vishay green standards and is halogen-free.
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