LTR-5986D

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Optical Sensors - Phototransistors are devices that convert light into an electrical current, used to measure the intensity of light or to detect the presence of a light source. The LTR-5986D phototransistor is a very versatile and reliable device for these applications. It uses a GaAlAs/InGaAs photoreceiver with an integrated transistor preamplifier to receive and amplify the optical power, and to generate an analog electrical signal proportional to the intensity of the light.

The device is a dark current compensated type, and it is designed for low-noise operation. The main features of the LTR-5986D include a built-in light shield to block unwanted ambient light, and a low-frequency cut-off filter that can be adjusted for various applications. It also has a wide dynamic range for high-precision measurements, and it is capable of detecting light as weak as -50 dBm.

The LTR-5986D can be used for many types of applications. Its main application is in low-light level sensing, such as in optical proximity sensors, flame detectors, traffic signals, and pressure sensors. It can also be used for high-sensitivity photo detector and linear optical detector applications, such as light engines, spectrophotometers, and motion sensors.

The device is typically operated in the presence of an external light source. The light source is typically supplied by a single-ended constant current source, operating at a nominal current of 5mA or 10mA. The output current is proportional to the light level present. The device can operate from 0.1μA to 20mA, and the response time is typically less than 1μs.

The working principle behind the LTR-5986D is fairly simple. When light enters the photodiode, it creates a current proportional to the intensity of the light. This current is amplified by the preamplifier, and the output is a voltage proportional to the level of light detected. This voltage is then further processed by an analog-to-digital converter (ADC) to obtain digital data that can be used to measure the light intensity.

The LTR-5986D is an excellent device for light detection applications, and its versatility and reliability make it a popular choice for many types of projects. Its low power requirements, wide dynamic range, and low noise operation, make it an ideal device for applications that require accurate and reliable light level sensing.

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