Visible Light Sensor

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 520 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. By Microsemi Corporation