ADUM5402ARWZ-RL Isolators

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Digital Isolators

Digital isolators are integrated circuits used to provide electrical isolation between two or more electrical circuits. They are used to prevent high voltage transients or electrical noise from one system from affecting other systems. The ADUM5402ARWZ-RL from Analog Devices is a perfect example of such a device.

Application Field

The ADUM5402ARWZ-RL digital isolator chip offers a robust level of protection for any control-based circuit. It can be used in consumer, industrial, and medical markets, providing galvanic isolated ground between the two isolated sides of the circuit. This isolator is also well-suited for power conversion applications. It is particularly useful for existing systems with distributed power sources, or where the integration of isolated power supply within a system would reduce risk of electrical shorts.

The ADUM5402ARWZ-RL can also be used in general-purpose signal isolator applications. Its digital isolation technology provides a low-power, cost-effective solution for applications such as switch isolation, noise-sensitive sensor measurements, protection for system pins, adaptive gain control, signal coupling, and bridge rectification.

Working Principle

The ADUM5402ARWZ-RL digital isolator chip is a high-speed switch capable of serving both high or low-level signals, depending on the application. The gap between the two sides is maintained by a double barrier of optically-coupled devices, coupled with an industry-standard analog-over-digital converter which adapts the signal from the primary side to the secondary side. This ensures a reliable and robust isolator.

The input of this digital isolator can be either a low-level signal (0-5V) or a high-level signal (3-24V). The optically coupled barrier has a rated input-to-output voltage range of 3-30V. It operates within a wide temperature range of - 40°C to + 85°C, which makes it suitable for a variety of environments.

The ADUM5402ARWZ-RL features a high-isolation rating of 5kVrms, ensuring a wide margin of electrical safety for the device. It has a maximum load voltage of 30V and a maximum output of 24mA, providing sufficient voltage and current to handle most applications.

Overall, Analog Device\'s ADUM5402ARWZ-RL digital isolator chip provides a secure and reliable method of keeping two circuits isolated from each other. Its wide operating range and high-isolation rating ensures it can provide robust signal isolation in a variety of applications.

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