CNX38USD

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Optoisolators are often used for noise isolation, signal isolation, or sensor isolation in a variety of different applications. In particular, the CNX38USD optoisolator offers a unique combination of features to provide excellent isolation and performance characteristics, making them ideally suited for a broad range of industrial, automotive, and consumer applications. This article will discuss the application field and working principle of the CNX38USD Optoisolator.

Overview of the CNX38USD

The CNX38USD optoisolator is a popular choice for digital signal isolation due to its low current requirements and robust, low-voltage operation. The device features a dual-channel photovoltaic output, allowing for the measurement of digital signals without the need for any additional components. It offers excellent isolation characteristics, up to 3750VAC rms, which is ideal for many industrial and automotive applications where mechanical or electrical vibration may cause signal degradation. The device also features a high isolation of 65dB, with two channels offering up to 20 dB channel-to-channel isolation. The CNX38USD provides excellent performance and reliability at a relatively low cost.

Application Fields of the CNX38USD

The CNX38USD optoisolator is well-suited for many industrial and automotive applications. It is especially useful for digital signal isolation, providing reliable isolation between sensors, controls, and power sources. In automotive applications, it can be used to isolate digital signals from engine sensors and controllers. In industrial applications, it can be used to provide sure signal isolation in noisy environments or in situations where vibration is present. In consumer applications, the CNX38USD is well-suited for digital signal isolation in devices such as home security systems. It is also useful for isolating digital signals from audio and video source components.

Working Principle of the CNX38USD

The CNX38USD optoisolator utilizes a dual-channel photovoltaic output design. This design utilizes two transistors that are connected in series with each other. One transistor is the input side and the other is the output side. When a voltage is applied to the input side, the voltage is dynamically applied to the output side. This voltage then varies depending on the amount of light that is emitted from the input side. The more light emitted, the greater the voltage on the output side.

The two transistors form a closed loop circuit, with each transistor being inversely switched on and off depending on the amount of light emitted. When the voltage on the input side is applied, it causes current to flow through an internal circuit. This current induces a magnetic field which causes the output transistor to be switched on. When the light emitted from the input side decreases, the current is also reduced and the output transistor is switched off. This is the basic principle behind the CNX38USD optoisolator.

Conclusion

The CNX38USD optoisolator is an excellent choice for digital signal isolation and provides reliable, robust isolation for a variety of applications. The device features a low-voltage, dual-channel design offering up to 3750VAC rms isolation, with a high isolation of 65dB and two channels offering up to 20 dB channel-to-channel isolation. This makes the CNX38USD an ideal choice for industrial, automotive, and consumer applications where vibration or noise can result in signal degradation.

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