EVAL-ADUM4120EBZ

Evaluation and Demonstration Boards and Kits have a wide range of applications in automation, communications, control systems, energy conversion, audiovisual systems, medical treatments, and more. In this article, we specifically discuss the application field and working principle of the EVAL-ADUM4120EBZ.

EVAL-ADUM4120EBZ is a quick-start evaluation board for the ADuM4120 smart, low-power, isolated bidirectional digital isolator. This isolator utilizes Analog Devices, Inc.’s iCoupler technology to provide high-speed digital communication with a guaranteed data rate up to 100 Mbps. It has built-in isolation and robust operation capabilities. The eval board allows easy connection to a PC for evaluation and circuit design.

The main application field of the EVAL-ADUM4120EBZ is for a variety of digital interface control, such as bi-directional digital communication isolation, power management, system re-start and so on. For example, this eval board is commonly used to isolate power and user interfaces when the load is switched or control systems are restarted. It also provides protection for sensitive analog circuits from digital noise and prevents over-voltage or over-current faults.

As for the evaluation board’s working principle, it utilizes an ‘optically isolated digital interface’ to isolate the user interface side from the power side. This principle of isolation ensures that no matter how the interface side behaves, the power side will be always secure. The ‘optically-isolated digital interface’ consists of two sets of MOSFET transistors which exchange optical signals and control the power side drive circuits without any direct electrical connection.

The EVAL-ADUM4120EBZ evaluation board is designed in a single-in-line package with a pin-out configuration of ‘VCC1, VCC2, GND1, GND2, ENABLE, F/B’. The evaluation board also has four LEDs to provide an indication of the device logic level and two terminals to drive external circuits like relays. This evaluation board is ideal for applications where digital isolation is necessary to provide protection against digital noise voltage spikes, short circuits, and other disturbances.

In conclusion, the EVAL-ADUM4120EBZ evaluation board uses an ‘optically-isolated digital interface’ to provide protection against digital noise voltage spikes, short circuits, and other disturbances. This makes it a perfect solution for applications requiring isolation in digital interface control such as bi-directional digital communication, power management, system re-start, and more.