ISL29112IROZ-T7A

The ISL29112IROZ-T7A from Intersil is a low power, <100lux optimized, analogue output ambient light sensor. It is a low cost, light to voltage silicon optical sensor combining a photodiode array, a non-linear current amplifier and a micropower op-amp on a single monolithic IC. Similar to the human eye, the photodiode array has peak sensitivity at 550nm and spans the wavelength range 400nm to 600nm, rejecting UV and IR light. The integrated non-linear current amplifier boosts and converts the photodiode signal into a square root output format, extending dynamic range while maintaining excellent sensitivity in dimly lit conditions. As such, the part is ideal for measuring incident daylight when mounted behind heavily smoked bezels used around displays or behind mirrors. The device consumes minimum power. A dark current compensation circuit minimizes the effect of temperature dependent leakage currents in the absence of light, improving the light sensitivity at low lux levels.

• Input luminance range from 0.01lux to 100lux
• 1.8V to 3V supply range
• Close to human eye spectral response
• Fast response time
• Internal temperature compensation
• Good IR rejection
• Low supply current
• Operating temperature range from -40°C to +85°C
• Ultra compact 2mm x 2.1mm ODFN plastic surface mount package