SI8420BD-D-ISR

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Digital Isolators

Digital Isolators are essential devices used in a variety of system engineering areas to provide electrical insulation between two subsystems. With the growing demand of smart products in the market, more system engineers require them to reduce power consumption while delivering reliable isolation with enhanced performance.

The SI8420BD-D-ISR offers fast, robust digital isolation for industrial, medical and automotive applications. This device is designed to ensure maximum safety with its high isolation rating and zero-crossing detection inputs, allowing it to provide the highest level of circuit insulation.

Application Field

The SI8420BD-D-ISR has a variety of applications in computer peripheral and control, monitor, communication systems, and portable device engineering. It also plays a vital role in the operation of industrial, medical, and automotive equipment and systems.

• Robotics – Robotics and automation processes require a reliable signal isolators to provide efficient operation and safety.
• Industrial – Industrial equipment specifications require high isolation voltage rating to ensure reliable safety.
• Medical – Medical machinery must provide reliable isolation between patient and personnel to meet safety requirements.

Working Principle

The SI8420BD-D-ISR works on the basis of capacitive isolation technology. This is a method of signal transmission without any physical connection between two digital circuits that requires a higher voltage than the operating voltage of the isolation circuits. The transfer of information between the two circuits is done by applying electric fields to the capacitors located in the circuit. The capacitors create an electrical connection between the two circuits.

The capacitors allow signals to be transferred both ways. The digital isolator also minimizes electromagnetic noise interference, preventing it from propagating into system circuit boards by blocking the radio frequency (RF) signals. Its wide common-mode voltage range allows it to provide robust isolation, high immunity and reduce power consumption in comparison to traditional opto-isolator technologies.

The SI8420BD-D-ISR also features a latency time of under 1ns, and power consumption below 40mW, making it an ideal choice for system engineers and designers working on digital signal isolation.

Conclusion

Digital isolators such as the SI8420BD-D-ISR provide robust high-performance electrical isolation with low leakage currents. This allows engineers to reduce power consumption, ensuring a high standard of safety in their designs. With a wide range of applications in computer control systems, industrial, and medical equipment, these isolators are an increasingly essential component of system engineering today.

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