VCNL4030X01 Automotive Proximity and Ambient Light

By Vishay Semiconductor / Opto Division 123

VCNL4030X01 Automotive Proximity and Ambient Light

Vishay Semiconductor's fully-integrated automotive grade proximity and ambient light sensor includes four different slave address options. Featuring Filtron™ technology, the VCNL4030X01 combines photo detectors for proximity and ambient light, a signal conditioning IC, a 16-bit ADC, and a high power IRED in one compact 4 mm by 2.36 mm by 0.75 mm surface-mount package. The AEC-Q101 qualified sensor features an interrupt function and supports I²C bus communication interface for mobile devices and smart home, industrial, and automotive applications. 

The device includes a programmable interrupt function, which allows both high and low thresholds to be set to reduce the overall power consumption within an application. The function can be programmed to trigger both the ambient light and proximity sensor. The sensor’s Filtron technology enables ambient light spectral sensitivity close to that of the human eye while offering excellent background light cancellation capabilities. The VCNL4030X01’s built-in ambient light photo diode offers detection from 0.004 lx to 4.2 klx, allowing the device to operate in applications with dark or high transparency lens designs. The sensor offers high accuracy of ±10%, fluorescent light flicker immunity, and excellent temperature compensation from -40°C to +105°C. The VCNL4030X01’s proximity sensor uses intelligent cancellation to eliminate cross-talk, while a smart persistence scheme ensures fast response time and accuracy when an object is detected. The device’s high sensitivity allows for high object-detection distances up to 300 mm. The emitter wavelength peaks at 940 nm and has no visible “red-tail.”

The device has a supply voltage range of 2.5 V to 3.6 V and I²C bus voltage range from 1.8 V to 5 V. Offered in a lead-free 8-pin QFN package, the sensor is RoHS-compliant, halogen-free, and Vishay Green.


  • Dimensions: 4.0 mm x 2.36 mm x 0.75 mm (L x W x H)
  • Integrated modules: infrared emitter (IRED), ambient light sensor (ALS), proximity sensor (PS), and signal conditioning IC
  • Filtron technology adoption for robust background light cancellation
  • Low power consumption I2C (SMBUS compatible) interface
  • Orderable in four different slave addresses
  • Operation voltage: 2.5 V to 3.6 V
  • Floor life: 168 h, MSL 3, according to J-STD-020
  • Surface-mount package type
  • AEC-Q101 qualified
  • Output type: I2C bus (ALS / PS)
  • Operates ALS and PS in parallel structure


  • Proximity sensor
    • Mobile devices (e.g. smartphones, tablets) for touch screen locking or power saving
    • Automotive for presence detection
  • Integrated ambient light function for display/keypad contrast control and dimming of mobile devices
  • Collision detection in robots and toys
  • Proximity/optical switch for consumer, computing, automotive, and industrial devices, and displays (notebooks, tablet PCs, and automotive touch panels)
  • Dimming control for consumer, computing, industrial, and automotive displays