ISO7842FDWW

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Digital Isolators are important components in electronic systems, used to provide physical isolation between two circuits. ISO7842FDWW is a digital isolator from Wurth Electronics which provides a wide range of isolation needs in safety-critical applications. This article will discuss the application field of ISO7842FDWW and its working principle.

The ISO7842FDWW provides ultra-low power digital signal transmission and protection. It is used in applications where electrical isolation is needed—ideally for the protection of sensitive control circuits and data. The ISO7842FDWW meets the industry standard UL1577, and complies with the IEC60601-1 3rd edition medical isolation requirement. This makes the device suitable for a variety of applications that involve close contact with medical equipment.

The ISO7842FDWW isolator works by using a patented digital isolator topology. It utilises a full bridge structure which runs at a frequency of 3.5MHz. The full bridge is driven by a low side control signal and a pair of pulse transformers. The pulse transformer isolates the electrical connection between the input and output and, when coupled with an appropriate driver circuit, ensures accurate level transition. As a result, the ISO7842FDWW can transmit and receive data signals without any electrical contact.

The ISO7842FDWW can be used in a wide variety of applications, from medical device interfacing to power line communication endpoints. The device is ideal for battery powered two-way communication systems such as those used in unattended point-of-sale terminals, and in harsh environment applications such as space technology. In addition, the ISO7842FDWW is very robust, and features a very low power consumption, making it an attractive choice for battery-powered applications where ultra-low power consumption is critical.

The ISO7842FDWW also features a fault-tolerant I2C interface, which ensures that the data transmission between two circuits operates within a safe range. This feature protects both circuits from any loss of data or disruption due to a fault in the communication. Additionally, the device is designed to provide a maximum data speed of up to 10 Mbps, which makes it suitable for high-speed data transfer between multiple circuits.

In conclusion, the ISO7842FDWW digital isolator from Wurth Electronics is an ideal solution for providing electrical isolation between two circuits. Its low power consumption and fault-tolerant I2C interface enable it to be used in many different applications, from medical device interfacing to harsh environment applications. Its highly robust design and wide range of data transfer rate make it an attractive choice for designers seeking a reliable and high performance electrical connection.

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