SI8421AB-D-ISR

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Digital isolators provide electrical isolation between two circuits, using solid-state technology. They have proven to be invaluable in applications such as medical and industrial where galvanic isolation is required. As technology progresses, digital isolators are being used in a wide variety of applications. One such device is the SI8421AB-D-ISR.

The SI8421AB-D-ISR is a high-speed, asymmetrical, 3.3 V powered, digital isolator with an integrated signal and power return. It is designed to support the low voltage and low current needs of digital systems, including matrix scan, LCD and single board solutions. As such, it is ideal for applications where galvanic isolation is required, but where space is a constraint. In addition, the SI8421AB-D-ISR features an integrated power supply, integrated reference voltage, and integrated temperature compensation. All of these features makes the SI8421AB-D-ISR ideal for a variety of applications.

The SI8421AB-D-ISR provides isolated data transmission with speeds up to 1 Mbps and can support up to four concurrent data signals. The application range includes low-voltage systems such as matrix scan and LCD, as well as single board solutions which may require higher throughput and speeds. The SI8421AB-D-ISR supports a wide range of operating conditions, including low EMI, high ESD environmental conditions, and temperatures from -40°C up to +85°C.

The SI8421AB-D-ISR is built on a high-speed, high-performance tantalum-tin oxide substrate. This makes it highly resistant to temperature and humidity variations. In addition, the device features an adjustable on-chip isolation voltage, which allows it to be tailored for a variety of applications. The SI8421AB-D-ISR also includes an integrated power supply, integrated reference voltage, and integrated temperature compensation.

The SI8421AB-D-ISR works by isolating two circuits with a galvanic isolation barrier. This is achieved by creating a controlled potential difference between the two circuits. This potential difference is known as the isolation voltage and is created using an on-chip isolator, which works by using an electrical field to induce a voltage in the isolation voltage gap. This voltage is then used to transfer data between the two circuits. Each circuit is electrically isolated, and data can be transferred from one circuit to the other without any risk of short-circuiting or current leakage.

The SI8421AB-D-ISR is an ideal solution for applications in the medical, industrial, and aerospace industries. Its features make it ideal for low-power systems, such as matrix scan, LCD, and single board solutions. The isolated data transmission, high-speed, low EMI and ESD capabilities, and wide operating temperature range make it suitable for a variety of applications. The SI8421AB-D-ISR is an excellent choice for those requiring a high-performance, low-cost digital isolator solution.

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