ADUM1442ARSZ-RL7

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Digital Isolators are useful for protecting circuits in a host of applications, including in industrial power supplies, medical equipment, and communication systems. The ADUM1442ARSZ-RL7 is a digital isolator which provides electrical isolation between two circuits, as well as DC-biasing an isolation barrier. It is especially suitable for galvanic isolation between supply and control sides of power supplies and triac switching circuits, and is based on the principles of transformer isolation.

It incorporates a specific IC chip in an 18-pin configuration, and has an operating temperature range of -40 C to +125 C. It has a total resistance of 4.1-Ohms between input and output sections, as well as an ability to reject high frequency noise. Furthermore, it has low propagation time delay of 1.7µs, and an isolated output of 2.5VDC. The ADUM1442ARSZ-RL7 also has a minimum input/output isolation voltage of 5kVDC (basic insulation).

The isolator has a wide range of applications, as it can handle input to output voltages of up to 40V (max.), and is compliant with UL60950, REACH, RoHS, and WEEE standards. This also makes it suitable for industrial safety control applications, such as HVAC systems, process/motor control, as well as building automation. In addition, it is ideal for level shifters and current transformers, isolation driver pre-drivers for gate driver integration, and circuit isolation on printed circuit boards.

The isolator features dynamic input/output balancing. This helps to ensure a stable output on the secondary side, thus protecting the primary circuit from ground loop disturbances. On the other hand, integrated optical isolators serve to filter out high frequency interference signals, as well as provide the necessary voltage isolation. As such, it is suitable for use in even the most electrically noisy environments, such as in critical medical applications.

To sum up, the ADUM1442ARSZ-RL7 is a versatile digital isolator that provides galvanic isolation to discontinue a signal, while protecting circuits from interference and electrical shocks. It is especially suitable for industrial automation, safety control applications, and electrical equipment. The isolator features robust construction, as well as balancing of input/ouput sections, filtering out high frequency interference, and providing a stable output.

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