EVAL-ADUM3471EBZ

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Evaluation and Demonstration Boards and Kits are used by designers and engineers to develop basic understanding of a product in a convenient and efficient way. The EVAL-ADUM3471EBZ board is a demonstration board for the isolated quad digital isolator ADuM3471 that can be used to evaluate basic features of the isolator, as well as allow user to make design corrections or modifications of basic application.

Application Field

The EVAL-ADUM3471EBZ board serves multiple application areas, such as a bridge between high-speed logic buses and a system that has high-speed I/O requirements or devices with low-power requirements such as sensors and battery charged circuits. It can be used for powering and logging various types of applications such as industrial measuring and control systems, communication systems, medical systems, and general I/O systems. It is also useful for systems with EMI/RFI sensitive environments such as medical and aerospace/defense applications.

Working Principle

The EVAL-ADUM3471EBZ board uses a Quad Channel Digital Isolator to provide magnetic-field isolation, thereby helping to ensure precision analog to digital communication over a wide voltage range. The board is based on four ADuM3471 devices, which are used to provide isolation between the high-speed logic buses (e.g., I2C/SPI/UART) and a system that has high-speed I/O requirements. Each device isolates one logic lane from the other, which makes it suitable for communication over a wide variety of higher-level protocols. The board also contains on-board filters, which are used to reduce noise. The board is also capable of driving low-voltage logic.

The board also contains four inductors for coupling between the isolated lanes, which reduce the crosstalk between the channels while providing the required electromagnetic isolation. The board also contains a 3.3V power supply and a voltage reference, which provides a stable reference voltage for all four logic channels. The board also contains an enable switch, which can be used to enable/disable each logic lane, which allows for flexible system design.

Cross-talk between data lanes is eliminated and data is transmitted in a highly reliable and fault-tolerant manner. Isolation is maintained even in instances where mains power is lost, and the data transmitted will remain unaffected. The board also includes a reset switch which can be used to reset the logic bus if an error is detected.

The board is designed to provide high-speed and high-frequency isolation between multiple logic lanes on a single board. The board can operate in a variety of applications including industrial and medical systems, data acquisition systems, communication systems and general I/O systems. By providing a well-defined electromagnetic field with a high isolation voltage between the high-speed logic buses, the board helps to provide reliable transmission of digital data.

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