Vishay Semiconductors VCNL3030X01 Proximity Sensors for Force Sensing

Vishay Semiconductors VCNL3030X01 Proximity Sensors are designed to make any surface a touch-sensitive surface. The VCNL3030X01 series measures deflections of a surface as small as 50µm. These proximity sensors create a local touch-sensitive area similar to a home button on mobile phones, rather than using a mechanical button or having an entire display be touch sensitive. Vishay calls this “force sensing”.

The Vishay Semiconductors VCNL3030X01 series allows users to detect a touch, measure the change in the touch pressure, and permit the end product to be completely sealed from the environment. These are just a few of the many force sensing applications the VCNL3030X01 employs.

The sensors integrate an infrared emitter, photodiode, amplifiers, and analog-to-digital converting circuits on one chip, featuring 16-bit resolution. Via I²C, the VCNL3030X01 supports programmable interrupt with individual high and low thresholds, eliminating the need for microcontroller polling. The proximity sensors have an operating voltage of 2.5V to 3.6V.

Features

Interrupt
- Programmable interrupt function for PS with upper and lower thresholds
- Adjustable persistence to prevent false triggers for PS
Surface-mount 4.0mm x 2.36mm x 0.75mm (L x W x H) package
AEC-Q101 qualified
Infrared emitter (IRED), proximity sensor (PS), and signal conditioning IC Integrated modules
Low power consumption I²C (SMBus compatible) interface

Proximity function
- Immunity to red glow (940nm IRED)
- Programmable IRED sink current
- Intelligent cancellation to reduce cross talk phenomenon
- Smart persistence scheme to reduce PS response time
- Selectable for 12-/16-bit PS output data
I²C bus (PS) Output type
2.5V to 3.6V Operation voltage
168h, MSL 3, according to J-STD-020 floor life