PS2811-1-A

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Optoisolators are semiconductor devices that are used to isolate electrical circuits from each other while allowing transmission of information between them. This isolation prevents any potential transfer of electrical ground noise, electric shock, and interference between the two circuits. The PS2811-1-A optical isolator is a purely electrical and optically coupled power-input device designed for use in many different applications.

Application Field

The PS2811-1-A is a 4-pin photovoltaic SOP (Small Outline Package) optoisolator with a transistor output. It is designed for use in a wide range of industrial and consumer applications including control systems, medical instrumentation, industrial instrumentation, railway control systems, LED lighting control, automotive lighting, and audio/video equipment. It is also suitable for applications where isolation of high voltage or isolation of high frequency points is required.

Working Principle

The PS2811-1-A uses a light emitting diode (LED) to provide an optical signal, which is then detected by a photosensitive device. The LED and photosensitive device are optically coupled through a transparent medium. This optical coupling is achieved by means of the LED\'s emission of light, which is detected by the photosensitive device. The input signal is fed into the LED and is converted into an electrical signal, which is then used to control the output transistor. The output of the optoisolator is the electrical signal from the output transistor, which can then be used to control other devices.

The PS2811-1-A optical isolator has a wide range of working voltages from 4.5V DC to 20V DC. It provides a fast off-time response and can switch at frequencies as high as 50 KHz. It also has high optical isolation voltage of 5kV rms, immunity to power line transients, and has pulse widths of up to 1ms.

The PS2811-1-A optoisolator has a CMRR (Common Mode Rejection Ratio) of up to 1050dB. This makes it an ideal choice for applications that are sensitive to common mode noise and ESD. The optocoupler can also be used in AC power line applications when operated with suitable power line protection.

Overall, the PS2811-1-A optoisolator is a reliable and cost-effective solution to the isolation needs of many different types of applications. Its unique optical isolation ensures that there is no transfer of electrical ground noise, electric shock, or interference between the input and output devices, making it suitable for use in a wide range of industrial and consumer applications.

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