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Ambient Light Sensor LX 1970 IDU
The LX 1970 is a new technology light sensor with a spectral sensitivity that emulates the human eye. It is ideal for monitoring ambient light for brightness control systems in displays. It has a unique photo diode arrangement with a maximum sensitivity at a wavelength of 520 nm while sharply attenuating both ultra-violet and infrared wavelengths. The photo sensor is a PIN diode array with a highly accurate, linear and repeatable current transfer function. Photo current is amplified by integrated high gain amplifiers and is supplied to 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 one or both outputs. Voltage gain is determined by the value of the resistor typically in the range 10
k&Omega to 50 k&Omega. Accurate internal gain amplifiers considerably reduces design complexity and costs. Properties: Comparable with human spectral sensitivity &
- Highly accurate and repeatable output current under uniform lighting conditions &
- Scalable voltage &
- Temperature stable &
- Complementary current outputs &
- No optical filters required.
k&Omega to 50 k&Omega. Accurate internal gain amplifiers considerably reduces design complexity and costs. Properties: Comparable with human spectral sensitivity &
- Highly accurate and repeatable output current under uniform lighting conditions &
- Scalable voltage &
- Temperature stable &
- Complementary current outputs &
- No optical filters required.
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