LX1970IDU中文资料Legacy Power Management数据手册Microchip规格书

描述 Description

The LX1970 is a new technology light sensor with spectral response that emulates the human eye. This device is ideal for monitoring ambient light for brightness control systems in flat panel displays. It has a unique photo diode arrangement (patents pending) with a peak response at 540 nm while sharply attenuating both ultra violet and infrared wavelengths. The photo sensor is a PIN diode array with an accurate, linear, and very repeatable current transfer function. Photo current is multiplied by integrated high gain amplifiers and is made available at two output pins; one a current source and the other a current sink. These currents can easily be converted to voltage by adding a single resistor at either or both outputs. Voltage gain is determined by the resistor value typically in the 10K? to 50K? range. With accurate internal gain amplifiers, design complexity and cost are greatly reduced. The LX1970 is available in the 8-pin MSOP.Key Features: Approximate Human Eye Spectral ResponseLow IR Sensitivity Highly Accurate & RepeatableOutput Current vs. Light Voltage scalable Temperature Stable Integrated High Gain Photo Current Amplifiers Complementary Current Outputs No Optical Filters Needed