FOD2743BT

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Optoisolators are widely used due to their ability to prevent damaged signals and isolating circuits from each other. The FOD2743BT optoisolator consists of a GaAs infrared light-emitting diode (LED) optically coupled to a photovoltaic transistor output. It is a single channel optocoupler.

FOD2743BT\'s application field includes industrial control, logic interfacing, interface circuits, digital signals, analog signals and power electronics circuits. It offers excellent common mode transient immunity of up to 40KV/us, and it also offers enhanced noise immunity to reduce false triggering. The FODBS2743BT optoisolator is also capable of supporting high-speed pulse-width-modulated signals and pulse-width-modulated applications spanning up to 1 Mhz.

The FOD2743BT optoisolator\'s working principle revolves around the relationship between the transmission and the input result it produces. The key elements of this principle begin with the presence of an LED emitter to expose the photovoltaic transistor to optical energy. When sufficient optical energy is detected, a photo current is generated and affects the output transistors base-emitter junction voltage. This creates a signal from the phototransistor output terminal, thus providing an electrical isolation between input and output circuits.

Due to the electrical isolation of FOD2743BT optoisolator between circuits, mixed-signal data can be transmitted accurately and safely. With its high common mode transient immunity and excellent noise immunity, FOD2743BT optocoupler is suitable for digital communication applications. It is commonly used in power electronic circuits due to its fast pulse width modulation modulation, making it best suited for high speed puls power switches.

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