D Converts Light Intensity to Digital Signal D Infrared Compensation to ApproximateHuman Eye Response

D Companding A/D for Wide Dynamic Range D Rejects Hz/ Hz Lighting Ripple D TwoWire SMBus Serial InterfaceD Single Supply Operation (. V to . V)D Low Active Power ( mW typ)D Power Down ModeDLowProfile SurfaceMount Package DescriptionThe TSL is a digital light sensor with a twowire, SMBus serial interface. It combines two photodiodes and a companding analogtodigital converter (ADC) on a single CMOS integrated circuit to provide light measurements over an effective bit dynamic range.The TSL is designed for use 老师我想对你说作文800字 with broad wavelength light sources. One of the photodiodes (Channel ) is sensitive to visible and infrared light, while the second photodiode (Channel ) is sensitive primarily to infrared light. An integrating ADC converts the photodiode currents to Channel and Channel digital outputs. Channel digital output is used to compensate for the effect of the infrared component of ambient light on Channel digital output. The ADC digital outputs of the two channels are used to obtain a value that approximates the human eye response in the commonly used unit of Lux.This device is intended primarily for use in applications in which measurement of ambient light is used to control display backlighting such as laptop computers, PDAs, camcorders, and GPS systems. Other applications include contrast control in LED signs and displays, camera 以态度为话题的作文 exposure control, lighting controls, etc. The integrating conversion technique used by the TSL effectively eliminates the effect of 什么的我作文 flicker from ACpowered lamps, increasing the stability of the measurement. SMBData NC NC SMBCLKPACKAGE D LEAD SOIC (TOP VIEW)V DD NC NC GND