TSL25911FN

TSL25911FN is a light-to-digital converter. It is a very high sensitivity light-to-digital converter that transforms light intensity into a digital signal output capable of direct I²C interface. The device combines one broadband photodiode (visible plus infrared) and one infrared-responding photodiode on a single CMOS integrated circuit. Two integrating ADCs convert the photodiode currents into a digital output that represents the irradiance measured on each channel. This digital output can be input to a microprocessor where illuminance (ambient light level) in lux is derived using an empirical formula to approximate the human eye response. The TSL2591 supports a traditional level style interrupt that remains asserted until the firmware clears it.

• 0x29 address, I²C Vbus = VDD interface
• Approximates human eye response, dual diode
• Flexible operation, programmable analogue gain and integration time
• Suited for operation behind dark glass, 600M:1 dynamic range
• Low operating overhead, two internal interrupt sources
• Programmable upper and lower thresholds, one interrupt includes programmable persistence filter
• Low power 3.0µA sleep state, user selectable sleep mode
• I²C fast mode compatible interface, data rates up to 400kbit/s
• Input voltage levels compatible with 3.0V bus
• ODFN package