The TSL2540 sensor from ams Osram boasts an integrated on-chip photopic filter which provides near-photopic responsiveness for operation behind the inked glass of a touch panel display, as well as accurate control of the display backlight. It is a highly sensitive light-to-digital converter that transforms light intensity into a digital signal output through a fast-mode direct I2C digital interface.
This digital output can be input to a microprocessor where the ambient light level (in lux) is calculated using an empirical formula to provide accurate metering of light intensity that approximates the response of a human eye, regardless of the light source.
The sensor features very high sensitivity with low power consumption in a small 2 x 2 x 0,5 mm optical QFN package, and is capable of operating from millilux to 50 kilolux environments, allowing it to operate in small and deeply buried sub-system applications.
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