Vishay Semiconductors VEML7700 ambient light sensor

The Vishay Semiconductors VEML7700 is a digital ambient light sensor for backlight dimming and optical switching in consumer products.

The sensor combines a photodiode, low-noise amplifier and 16-bit ADC in a miniature transparent surface-mount package measuring 6.8 x 3 x 2.35 mm. With its compact size and mounting flexibility as a side- or top-view device, it allows designers to save space in compact televisions, CCTV cameras, smartphones, PDAs and GPS units, providing flexibility in where and how they place the device.

Filtron technology enables ambient light spectral sensitivity close to that of the human eye, while the sensor’s adoption of O-Trim technology provides an output tolerance of ≤10 %. The device offers detection from 0 lx to 167 klx and resolution down to 0.005 lx/ct, allowing for operation in applications with low-transmittance (dark) lens designs.

The product provides 100 and 120 Hz flicker noise rejection and temperature compensation from -25 to +85°C. It offers low power consumption down to 2 μA in operating mode and 0.5 μA in shutdown mode. The supply voltage range is from 2.5 to 3.6 V, while the I²C bus voltage range is from 1.7 to 3.6 V. Offered in a lead-free, 4-pin moulded package, the device is RoHS compliant, halogen-free and Vishay Green.