ADUM121N1BRZ-RL7

Overview

The ADUM121N1BRZ-RL7 is a dual-channel digital isolator from Analog Devices, utilizing capacitive isolation technology. It operates with a supply voltage range of 4.5 V to 5.5 V and supports data rates up to 150 Mb/s. The device provides an insulation voltage of 3000 Vrms and offers common-mode transient immunity of 75 kV/µs. It features unidirectional signal transmission within an 8-pin SOIC package. Key electrical parameters include a propagation delay of 7.2 ns and a typical rise time of 2.5 ns. The component is qualified under AEC-Q100 standards for automotive applications.

Feature Summary

• Capacitive isolation technology ensures robust signal transmission across the isolation barrier.
• High common-mode transient immunity protects against noise in electrically noisy environments.
• AEC-Q100 qualification supports deployment in automotive electronic systems.

Applications

• Automotive engine control modules
• Industrial communication interfaces
• Medical equipment signal isolation

Procurement Notes

Verify the specific suffix RL7 indicates reel packaging when sourcing. Confirm the manufacturer part number matches ADUM121N1BRZ exactly. Check for AEC-Q100 certification if automotive compliance is required. Ensure the SOIC-8 package width aligns with PCB layout constraints. Validate RoHS compliance status through official documentation before procurement.

Selection Notes

Select this component for applications requiring high-speed data transfer with strong noise immunity. The 150 Mb/s rate suits fast serial protocols. Consider the 3000 Vrms rating for safety isolation requirements. The unidirectional nature limits use to one-way data paths. Evaluate power consumption at 5.8 mA against system budget constraints.

Part Context

This part belongs to the ADuM121N series of dual-channel digital isolators. It serves as a bridge between low-voltage logic circuits and higher voltage domains. The series emphasizes EMC robustness and reliability. It replaces older magnetic coupling solutions with smaller form factors. The RL7 suffix denotes tape and reel packaging for automated assembly.

Replacement Considerations

Direct substitutes include other ADuM121N variants with different speed or voltage ratings. Cross-reference pinouts when considering non-Analog Devices alternatives. Verify isolation voltage and CMTI specifications match original design requirements. Ensure package dimensions are compatible with existing footprints.