ISO722MDR

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Digital Isolators are used to provide galvanic isolation between two pieces of electronic circuitry. Isolation prevents noise and interference in one system from affecting the other. ISO722MDR is one such type of digital isolator using magnetic isolation. It provides protection for digital data and can also be used to isolate analogue signals. It works by transmitting digital data through a magnetic field generated by an integrated transformer. In this article, we will discuss the application field and working principle of the ISO722MDR digital isolator.

Application Field

The main application field of ISO722MDR digital isolator is in industrial automation. It can be used to isolate devices and provide reliable digital signal transmission for Programmable Logic Controllers (PLCs), Distributed Control Systems (DCSs) and industrial communication systems. These isolators can also be used for protection of data from lightning and other transient sources. In scenarios where the data line needs to be more rugged or robust, the ISO722MDR is also used to isolate data lines from harsh industrial environments.

Working Principle

The ISO722MDR digital isolator is based on transformer isolation. It utilizes a dedicated transformer to generate a series of pulses which are used to encode and transmit the digital signal. A modulator is used to convert the digital signal into a low amplitude pulse-width modulated signal, which is then fed to the primary side of the transformer at a fixed frequency. This modulated signal is then transformed into the secondary side of the transformer, where a demodulator is used to convert the signal back to digital. The output from the secondary side is then used as the digital signal at the receiving end.

The ISO722MDR offers a few advantages over conventional digital isolators. The transformer used in ISO722MDR does not require a magnetic core or magnetic shielding, making it a smaller and lighter package. It has very high DC voltage isolation and lower output jitter, making it suitable for more applications. The low power consumption and high speed operation make it the ideal choice for data transmission.

Conclusion

The ISO722MDR digital isolator is a reliable and robust solution for galvanic isolation in industrial applications. Its transformer based design offers superior performance, low power consumption and high speed operation. It is suitable for a wide range of applications such as Programmable Logic Controllers, distributed control systems and industrial communication systems. With its proven track record of reliability and performance, the ISO722MDR digital isolator is a great choice for any industrial automation project.

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