ADUM7241CRZ

Overview

The ADUM7241CRZ is a dual-channel digital isolator from Analog Devices, housed in an 8-pin narrow SOIC package. It provides galvanic isolation with a rated insulation voltage of 1000 Vrms and supports data rates up to 25 Mb/s. The device operates on supply voltages between 3 V and 5.5 V, drawing a typical quiescent current of 1.2 mA per channel. Key electrical characteristics include a propagation delay of 50 ns, rise/fall times of 2.5 ns, and a common-mode transient immunity of 15 kV/µs. It functions as a unidirectional isolator suitable for general-purpose applications across industrial and automotive environments.

Feature Summary

• Provides robust galvanic isolation using magnetic coupling technology to separate signal paths.
• Features high common-mode transient immunity to maintain signal integrity in noisy environments.
• Operates with low power consumption, supporting efficient energy management in battery-powered systems.
• Complies with international safety standards including UL 1577 certification for insulation reliability.

Applications

• Industrial automation and process control systems requiring isolated communication interfaces
• Automotive electronics involving electric vehicle charging and battery management systems
• Medical equipment necessitating strict patient isolation and safety compliance
• Power metering and smart grid infrastructure utilizing isolated data transmission

Procurement Notes

Verify the specific suffix (e.g., -RL7) against your manufacturing requirements, as it dictates the reel quantity and packaging format. Confirm RoHS compliance status through official documentation before integration. Ensure the operating temperature range aligns with your system's thermal design constraints. Cross-reference the datasheet revision date to guarantee access to the latest technical specifications and errata information.

Selection Notes

Select this component when a dual-channel solution is required for bidirectional or parallel signal isolation within a single package footprint. It is appropriate for designs needing moderate data speeds up to 25 Mbps without the complexity of external components. Consider the 8-SOIC package dimensions for PCB layout compatibility. Evaluate the 1000 Vrms isolation rating against your system's safety clearance and creepage distance requirements.

Part Context

This part belongs to the ADUM7241 series of digital isolators manufactured by Analog Devices. The series utilizes cMOS technology to deliver high-performance isolation in compact packages. The ADUM7241CRZ specifically denotes the commercial temperature grade variant packaged in standard SOIC-8 form factor. It serves as a direct replacement for legacy optocouplers in modern interface designs.

Replacement Considerations

Direct pin-to-pin replacements may include other ADI models within the same family, such as the ADUM7241ARZ for extended temperature ranges. Verify that substitute parts match the 1000 Vrms isolation rating and 25 Mbps data rate specifications. Check for identical package dimensions to ensure mechanical compatibility during retrofitting.

FAQ

What is the maximum common-mode transient immunity of the ADUM7241CRZ?

The device offers a common-mode transient immunity of 15 kV/µs, ensuring reliable operation in high-noise environments.

Does the ADUM7241CRZ support bidirectional signal transmission?

No, the ADUM7241CRZ is designed as a unidirectional isolator. For bidirectional applications, consider the ADUM7240 model.

What is the typical quiescent current consumption per channel?

The typical quiescent current is 1.2 mA per channel at a 5 V supply voltage with no data switching activity.