ADUM1250WARZ

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Digital isolators are integrated circuits that are used to sever the electrical connection between two systems and transfer digital signals between them. The ADUM1250WARZ is a unique example of a digital isolation device because of its high reliability, low jitter, and low power consumption. This document will discuss the application field and working principle of the ADUM1250WARZ to help illustrate the value and practicality of this particular type of device.

The ADUM1250WARZ is a galvanically isolated, low power digital isolator that features high input/output frequency, low jitter, and low power consumption. The device is well suited for applications in medical systems, consumer electronics, telecommunications, and industrial and automotive systems. The ADUM1250WARZ is specifically designed to provide a robust barrier between two systems with a high common mode transient immunity and a low-voltage differential signal (LVDS) interface.

The ADUM1250WARZ provides precision digital isolation of multiple communication channels with ultra-low propagation delay and high absolute timing accuracy. It is designed to meet the most exacting requirements in terms of performance, function, and robustness of galvanic isolation. It features very low jitter, as well as 5.5kV galvanic isolation and a tight timing accuracy with propagation delays of 25 nanoseconds. The device also has a very low power consumption, with less than 1mW required to operate the device in low power static mode.

The working principle of the ADUM1250WARZ makes use of a combination of capacitive and magnetic couplings. At the heart of the device is a transformer with two magnetic cores, each with its own winding. When an electrical signal is present across the barrier, the primary winding induces a signal in the secondary, thus providing galvanic isolation. In addition, the device also utilizes capacitive couplers to ensure that the digital signals remain intact across the isolation barrier.

The digital signals are first transmitted from the primary side of the barrier to the magnetic cores in the transformer. The signal then passes through the capacitors, which provide the necessary isolation, and is passed to the LVDS interface. The interface then processes the signal and sends it to the false side of the barrier, where the isolated signal can then be interpreted in its original form.

In summary, the ADUM1250WARZ is an ideal digital isolation device for applications that require high performance, high frequency, low jitter, and low power consumption. It provides an effective and robust barrier between two systems while maintaining reliable communication and signal integrity across the boundary. This device offers a wide range of features that makes it an ideal choice for many digital isolation applications.

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