SI8442BB-D-IS1

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Digital isolators are electrical components used to safely transfer data and power signals between two or more systems. Digital isolators utilize either capacitive or magnetic coupled techniques to achieve electrical isolation. This minimizes or eliminates any disturbance that may occur due to any differences in ground values or signal surges.

The SI8442BB-D-IS1 is a digital isolator with low power consumption that provides high-accuracy data and power signal isolation for industrial application fields. This isolator has one side for transmitting the data/power signals, and a separate side to receive the transmitted signals. It also allows data/power throughputs, isolation and unidirectional signal conversions.

SI8442BB-D-IS1 Working Principle

In order to understand exactly how SI8442BB-D-IS1 works to safely isolate data, power, and other signals, let\'s take a look at its working principle. The first thing to know is that the SI8442BB-D-IS1 integrates a Cascaded Structure Topology technology that isolates power, data, and other signals from each other. It achieves this through the use of two separate isolation barriers.

The first isolation barrier uses optically-coupled Opto-Unit isolation to provide a minimum of 6000Vrms working voltage isolation. This isolates the power side from the signal side. The second isolation barrier is a capacitive-coupled transformer. This provides a minimum working voltage isolation of 1500Vrms, and isolates the signals from each other.

The SI8442BB-D-IS1 also features ESD protection, with a certified ESD withstand up to ±15kV for both human body model and machine model. This means that it can safely and effectively protect your application from any ESD-based disruptions.

SI8442BB-D-IS1 Application Field

The SI8442BB-D-IS1 is ideal for applications that utilize data and power signals, such as remote industrial automation, industrial control systems, hazardous area motor control, smart meters, and more. It is especially advantageous for applications where data and power signals must remain isolated from each other, and from external ESD sources.

In addition, the SI8442BB-D-IS1 has UL certification, making it safe for use in medical applications as well. This UL certification also applies to Environmentally Hazardous Data, and Low-Voltage Derivative Certification, making it suitable for a wide range of applications.

Conclusion

The SI8442BB-D-IS1 digital isolator is a reliable, cost-effective way to isolate data and power signals for a variety of industrial applications. It utilizes two separate isolation barriers, optically coupled Opto-Unit isolation and capacitive-coupled transformer isolation, to protect it from ESD sources and other environmental disturbances. While the specific details of each isolation barrier may vary from application to application, the general principle of how the SI8442BB-D-IS1 works is the same.

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