TSL2581, TSL2583 Light-to-Digital Converter The TSL2581 and TSL2583 are very-high sensitivity General Description light-to-digital converters that transform light intensity to a digital signal output capable of direct IC 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 16-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 TSL2581 device supports a traditional level style interrupt that remains asserted until the firmware clears it. While useful for general purpose light sensing applications, the TSL2581/83 devices are designed particularly for displays (LCD, OLED, etc.) with the purpose of extending battery life and providing optimum viewing in diverse lighting conditions. Display panel backlighting, which can account for up to 50 to 60 percent of total platform power, can be automatically managed. Both devices are also ideal for controlling keyboard illumination based upon ambient lighting conditions. Illuminance information can further be used to manage exposure control in digital cameras. The TSL2581/83 devices are ideal in notebook/tablet PCs, LCD monitors, flat-panel televisions, cell phones, and digital cameras. In addition, other applications include street light control, security lighting, sunlight harvesting, machine vision, and automotive instrumentation clusters. Ordering Information and Content Guide appear at end of datasheet. ams Datasheet Page 1 v1-00 2016-Mar-17 Document FeedbackT S L 258 1, T S L25 8 3 Ge n e r a l De s c ri p t i o n Key Benefits & Features The benefits and features of TSL2581, TSL2583, Light-to-Digital Converter are listed below: Figure 1: Added Value Of Using TSL2581, TSL2583 Benefits Features Enables Operation in IR Light Patented Dual-Diode Architecture Environments Enables Dark Room to High Lux Sunlight Programmable Analog Gain and Integration Time Operation Supporting 1,000,000-to-1 Dynamic Range Digital Interface is Less Susceptible to IC Digital Interface Noise Enables Low Standby Power Consumption Low Quiescent Current 3A in Power Down Mode Reduces Board Space Requirements while Available in Ultra-Small 1.25 mm 1.75 mm Chipscale Simplifying Designs Package and Small 2 mm 2 mm Flat No-Lead Package 30x More Sensitive Than the TSL2560/61 Device Approximates Human Eye Response Programmable ALS Interrupt Function with User-Defined Upper and Lower Threshold Settings 16-Bit Digital Output with IC Fast-Mode at 400 kHz Automatically Rejects 50/60-Hz Lighting Ripple Applications TSL2581, TSL2583, Light-to-Digital Converter is ideal for Ambient Light Sensor (ALS) for Display Brightness Control End Products and Market Segments HDTVs Laptops and Tablets Mobile Handsets Monitors Page 2 ams Datasheet Document Feedback v1-00 2016-Mar-17