Four-Channel, Single-Package Solution For Data And Power Isolation from Analog Devices

The ADuM540x iCoupler digital isolators with isoPower are a better choice over discrete solutions, such as optocouplers with external dc-to-dc converters, because their small 10 mm × 10 mm surface mount packages can reduce board space by up to 70 percent and cut costs by as much as 50 percent. In addition, the ADuM540x devices come with safety pre-approvals, allowing designers to realize faster design times as compared to discrete-based solutions, which require time-consuming safety approvals that can delay time-to-market.

“Delivering 500 mW of isolated power and offering the flexibility of 3.3-V or 5.0-V operation, the ADuM540x products enable customers to put more channels of isolation into space-constrained designs,” said Ronn Kliger, product line director, Digital Isolation Products, Analog Devices. “For example, industrial control designers can now increase the number of isolated data ports in a single control module without increasing the size of the module, even though each port requires its own isolated power supply. With alternate solutions, such as optocouplers and separate, isolated dc-to-dc converters, the control module would need to increase in size and would not be backward compatible with installed industrial control systems.”

The on-board isoPower isolated dc-to-dc converter provides up to 500 mW of regulated, isolated power and can operate at either 5.0-V or 3.3-V. A version with two channels (ADuM520x) and a version that features only the isoPower isolated power supply (ADuM5000) will be released later this year.