Ambient light sensor TSL25 series

visiblephotodiodeinfrared

Light-to-digital converter with I2C interface Features - Patented dual-diode architecture - 1M:1 dynamic range - Programmable interrupt function - I²C digital interface - Available in 1.25mm x 1.75mm chip-scale or 2.6mm x 3.8mm TMB or 2mm x 2mm Dual - - Flat no-lead (FN) packages Benefits - Enables operation in IR light environments - Enables dark room to high lux sunlight operation - Reduces microprocessor interrupt overhead - Digital interface is less susceptible to noise - Reduces board space requirements while simplifying designs Product parameters Supply Voltage [V]: 2.7 - 3.6 Interface: I2C - VDD Programmable: Gain, integration time, interrupt Max. Lux: 40000 Temperature Range [°C]: -30 to 70 Packages: (6-Pin) CL, FN, CS, T Remark: Not recommended for new designs. Please see TSL2572x device family. General Description The TSL2561 is a light-to-digital converter that transforms light intensity to a digital signal output capable of an I2C interface. Each device combines one broadband photodiode (visible plus infrared) and one infrared-responding photodiode on a single CMOS integrated circuit capable of providing a near photopic response over an effective 20-bit dynamic range (16-bit resolution). Two integrating ADCs convert the photodiode currents to 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 TSL2561 device supports a traditional level style interrupt that remains asserted until the firmware clears it.