Ambient light sensor for automotive and consumer applications

28-10-2021 | Vishay | Lighting Technologies

Vishay Intertechnology offers a new AEC-Q100 qualified ambient light sensor for automotive and consumer applications where extremely high sensitivity is required for sensing light through dark cover materials. The Vishay Semiconductors VEML6031X00 provides a highly sensitive photodiode, low noise amplifier, 16-bit ADC, and IR channel in a miniature, opaque 2.67mm x 2.45mm surface-mount package with a low 0.6mm profile.


The automotive-grade device allows ambient light spectral sensitivity close to that of the human eye. The sensor provides detection with highly linear behaviour from 0lx to 228klux — eradicating the necessity for a correction formula — while its resolution down to 0.0034lx/ct provides for operation in applications with low transmittance (dark) lens designs. The device's IR channel allows light source detection and sensitivity changes to compensate for lux errors.


Providing a high operating temperature range to +110C and a robust package with an improved SNR, the device may be used for display backlight controls, rearview mirror dimming, interior lighting control systems, infotainment systems, and heads-up displays. The sensor supports the simple to use I²C bus communication interface for these applications and provides an interrupt function.


The flexible device supports multiple slave addresses for applications needing more than one sensor, whilst a selectable integration time down to 3.125ms provides fast response times. The sensor offers excellent temperature compensation to sustain stability despite changes in ambient temperature and offers low shut down current consumption of 0.5μA typical.






The device has a supply voltage range of 2.5V to 3.6V and I²C bus voltage range of 1.7V to 3.6V. RoHS-compliant, halogen-free, and Vishay Green. The device provides a Moisture Sensitivity Level of 2a and a floor life of four weeks in accordance with J-STD-020.

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