PS9513L2-AX

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Optoisolators are electrical devices with components that are built to electrically isolate their input from their output, and provide optical isolation from the input to the output. This means that the circuits connected to the input of the device are completely isolated from the circuits connected to the output, protecting the two from any influence or damage from the other. One type of optoisolator, known as the Logic Output type, makes use of photodetecting and amplifying technology to provide a logic level output when triggered by an input stimulus. One example of this type of optoisolator is the PS9513L2-AX. This application field and working principle of the PS9513L2-AX is what will be discussed below.

PS9513L2-AX Application Field: The PS9513L2-AX is a high speed optocoupler designed specifically for high-speed signal transmission applications, primarily for high-speed applications such as PC and peripheral serial data transmission, video signals transmission, and audio signals transmission. Other applications of the PS9513L2-AX include use in digital entire systems, including data communication circuits, measurement, and control circuits.

PS9513L2-AX Working Principle: The PS9513L2-AX has two parts: a light-emitting diode (LED) and a phototransistor (PT). The input is connected to the LED, and when the input voltage is higher than the LED threshold, the LED will be turned on and emit light. The light is then transmitted to the PT, which is connected to the output. The PT will then be turned on and a voltage will appear across its collector and emitter. The output voltage is therefore proportional to the light intensity. The ratio of this voltage is known as the CTR (Current Transfer Ratio), and it is typically between 70 and 600% for the PS9513L2-AX. The PS9513L2-AX is also designed with a high-speed response, with switching speeds up to 2.2ns.

In conclusion, the PS9513L2-AX is a Logic Output type optoisolator designed for high-speed signal transmission applications. It has two components, an LED and a PT, which work together to provide an output voltage proportional to the light intensity, and it has a fast response time. With this optocoupler, it is possible to protect important circuits and signals from electromagnetic interference, as it provides a high degree of isolation between different electrical circuits.

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