SI8440BB-D-ISR

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

Digital isolators are used to provide electrical isolation between digital buses. This allows sensitive circuitry to be connected to existing buses without fear of over voltage electrical spikes destroying the circuitry. The SI8440BB-D-ISR is an excellent choice for use in applications that require electrical isolation and delivery of isolated power. In this article, we will discuss the application field and working principle of the SI8440BB-D-ISR.

Application Field of the SI8440BB-D-ISR

The SI8440BB-D-ISR is designed to provide a cost-effective solution for isolating communication data lines, transmitting digital signals across transformers, and powering isolated devices. Typical applications include process control systems, industrial automation, and medical equipment. The isolator can be used to connect different types of digital buses, such as USB, CAN, Profibus, InterBus, and RS-232.

The SI8440BB-D-ISR supports up to four channels, allowing the user to transfer multiple digital signals with high accuracy and reliability. The device also has built-in ESD protection for surviving harsh environments. Additionally, the isolator provides up to 12.5 mA of current per channel to power isolated devices, making it an ideal solution for powering multiple analog peripherals.

Working Principle of the SI8440BB-D-ISR

The SI8440BB-D-ISR uses MOSFETs on the input side and isolated power transformers on the output side to achieve electrical isolation. The device features low propagation delay, allowing it to transfer digital signals with high accuracy. The SI8440BB-D-ISR also has high ESD protection levels to ensure reliable operation in harsh environments.

The device uses a built-in isolated power supply to provide up to 12.5 mA of current per channel to power isolated devices. This makes it an ideal solution for powering multiple analog peripherals. To ensure the highest possible isolation voltage between the input and output, the SI8440BB-D-ISR is designed to withstand up to 10,000 volts of common mode transient voltage.

The SI8440BB-D-ISR also features an on-chip temperature sensor to monitor junction temperature. This ensures that the device maintains an appropriate operating temperature range, thus minimizing power dissipation and reducing EMI emissions.

Conclusion

The SI8440BB-D-ISR is an excellent choice for providing electrical isolation and delivering isolated power in applications such as process control systems, industrial automation, and medical equipment. It is designed to provide a cost-effective solution for isolating communication data lines, transmitting digital signals across transformers, and powering isolated devices. Additionally, the device provides up to 12.5 mA of current per channel to power isolated devices, making it an ideal solution for powering multiple analog peripherals. Finally, the device features low propagation delay, high ESD protection levels, and an integrated temperature sensor to ensure reliable operation in harsh environments.

The specific data is subject to PDF, and the above content is for reference