The TSL2584TSV from the Austrian company ams AG is a highly sensitive light-to-digital converter chip that converts light intensity into a digital signal output via its I2C interface. The chip sensors consist of one broadband photodiode (sensitive to visible plus infrared light) an infrared sensitive photodiode and a photopic infrared-blocking filter on a single CMOS IC. Two integrating ADCs convert the photodiode currents into a digital output that represents the irradiance measured by each sensor channel.
The digital output value can be used by an external processor where the illuminance (ambient light level) in lux can be derived using an empirical formula to approximate the sensitivity response of the eye. The TSL2584TSV can also generate an interrupt which remains asserted until cleared by firmware. The chip operates from a supply rail between 2.7 and 3.6 V and can handle a maximum light intensity of 33000 lux. The chip is packaged in a 6-pad TSV outline measuring just 1.66 x 1.145 x 0.32 mm.
The TSL2584TSV also has an evaluation kit available. The price per unit of the TSL2584TSV is $0.58 in order quantities of 1,000 pieces.