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Digital Isolators

The ISO7842DWW (Digital Isolated Wideband Amplifier) is a hybrid integrated circuit that transmits digital signals in high voltage/current applications. It is used for data transmission between circuits that have different electrical characteristics, such as between a digital circuit and an analog circuit. As its name suggests, the ISO7842DWW provides optical isolation, enabling the transmitted signals to remain safe and secure.

Applications

The ISO7842DWW can be used in any electronic application that requires optical isolation, such as wetting/drying control, industrial automation, high voltage monitoring, instrumentation, and other high voltage/current applications. The device is well-suited for measurement and communication of digitally-encoded signals in extreme environments, such as on production lines in hazardous environments.

Working Principle

The ISO7842DWW consists of two optical couplers, one for receiving the data and another for sending it. The data is then transferred through a Reflection Bridge circuit to provide electrical isolation.

In the ISO7842DWW, the data is first converted into a digital signal using a voltage-controlled current source. This digital signal is then amplified to provide the required transmission strength. It is then passed through the optical coupler, where the signal is converted to an optical signal. The optical signal is then received by the second optical coupler and converted to an electrical signal. Finally, the received signal is amplified, allowing it to be received by the other side.

The ISO7842DWW provides good electrical isolation performance, and is capable of working in extreme environments, as it is also able to withstand high temperatures. It also has a low power consumption, making it suitable for battery-powered devices.

Advantages

• Provides good electrical isolation performance.
• Capable of working in extreme environments.
• Low power consumption.
• Easy to use and highly reliable.

The ISO7842DWW provides a reliable and easy way to transfer digital data in high voltage/current applications, making it an ideal choice for applications where data security and accuracy are essential.

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