Sensor Controls Display Brightness Automatically June 2003 Issue Published Date: June 01, 2003
Capable of working with virtually any display, whether employing fluorescent lamps or LEDs, the LX1970 visible light sensor is said to automatically control the brightness of flat panel displays with human eye accuracy - the visible light sensor is said to emulate the spectral response of the human eye with an accuracy so fast that viewers are unaware of display brightness changes with fluctuations in ambient light. This PIN diode array is designed to provide an accurate, linear and highly repeatable current transfer function multiplied by integrated high gain amplifiers. No optical filters are needed. The photo sensor converts light to matching current source and current sink outputs, so design-ins can be as simple as adding a resistor. The LX1970 comes in an eight-pin, 3 mm x 3 mm MSOP priced at $1.41 each/1,000. MICROSEMI CORP., Irvine, CA. (949) 221-7100.
