FOD250L

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Optoisolators contain optical components that perform isolation between input and output circuits, while providing electrical interlocking between these circuits. They consist of an LED, optically coupled to a detector, typically a photovoltaic device. The optoisolatoris used in electrically noisy environments to provide electrical isolation between circuits while offering the compelling performance of an optical coupling.

The FOD250L optoisolator is a type of Transistor, Photovoltaic Output optoisolator that provides a fast switching response time, superior 5000 volts of insulation, and rail-to-rail logic compatibility. It can work with standard logic families such as TTL andCMOS, and is ideal for signal transmission in high frequencyand/or high noise environments.

The FOD250L optoisolator combines an LED and a photovoltaic device so that each LED pulse generates a proportional electrical pulse at the detector output. The LED provides reliable optical coupling between the input and the output because of its low voltage level, which eliminates the possibility of unwanted current flow through the photodiode. The photovoltaic device generates its own electrical output voltage from the optical source without the need for an external power supply. This output voltage is sensed by the shunt regulator at the optoisolator\'s output, making it insensitive to temperature drifts.

The FOD250L optoisolator has a high operating temperature of up to 70°C and excellent ESD protection. Its extremely fast switching time of less than 5ns enables it to accurately transmit digital signals in a high-frequency environment, and its superior insulation voltage of up to 5000V supports its use in applications subject to high voltages.

Furthermore, the FOD250L optoisolator sports an internal shunt regulator, eliminating the need for a separate bias voltage to keep the output voltage within a predetermined logic family. This helps reduce the parts count in the circuit, thereby decreasing system cost. The shunt regulator also allows the optoisolator to produce rail-to-rail logic levels which enables the circuit to use a wider voltage range, allowing for a higher data rate.

The FOD250L optoisolator is widely used in applications such as isolating control signals found in automotive accessories, consumer electronics, industrial applications, and communications systems. It is also used for pulse rate monitoring and repeat-accuracy in most manufacturing process control systems, as well as for monitoring and controlling low-voltage power supplies in security systems.

In summary, the FOD250L optoisolator is an extremely versatile and reliable device that offers superior 5000 volts of insulation, remarkably fast switching response time, and rail-to-rail logic compatibility. It is ideal for use in high frequencyand/or high noise environments where signal transmission accuracy is paramount. It is widely used in automotive, consumer electronics, industrial, and communications applications for monitoring and isolating control signals.

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