ADUM321N0BRIZ

Overview

The ADUM321N0BRIZ is a dual-channel digital isolator from the ADuM321N series, manufactured by Analog Devices Inc. It utilizes iCoupler technology to provide robust isolation with a maximum data rate of 150 Mbps and a typical common-mode transient immunity of 180 kV/µs. The device operates within a supply voltage range of 2.25 V to 5.5 V on both sides. It features unidirectional signal transmission with a 1:1 channel configuration. The part is housed in an 8-pin SOIC_N package and is qualified under AEC-Q100 standards for automotive applications.

Feature Summary

• High common-mode transient immunity of 180 kV/µs typical value
• Low dynamic power consumption with less than 1.65 mA per channel at 1 Mbps
• Integrated fault-safe low output logic when input power is removed
• Capable of level shifting between 2.25 V and 5.5 V supply domains

Applications

• Inverter control circuits
• Industrial fieldbus isolation
• PWM controller signal isolation
• General-purpose multi-channel isolation

Procurement Notes

Verify the specific suffix BRIZ corresponds to the tube packaging format and N0 fault-safe configuration. Confirm AEC-Q100 qualification status for automotive deployment. Ensure compatibility with the 8-pin SOIC_N footprint during PCB layout. Check current availability as distribution channels may report limited stock or restricted supply conditions.

Selection Notes

Select this component for designs requiring high-speed bidirectional data transfer across isolated boundaries with strict EMI constraints. The 150 Mbps rate supports modern industrial protocols. The N0 suffix ensures a defined low state upon power loss, enhancing system safety. Verify that the 5700 VRMS insulation rating meets the specific circuit isolation requirements.

Part Context

This device belongs to the ADuM321N family of dual-channel digital isolators. It integrates CMOS circuitry with monolithic air-core transformer technology. The series offers various channel configurations and fault-safe options. It is designed to replace bulky magnetic components while maintaining high performance and reliability in noisy environments.

Replacement Considerations

The ADUM321N0WBRIZ serves as a wide-body variant within the same functional family. Both parts share identical electrical characteristics but differ in physical package dimensions. Verify pinout compatibility and thermal management requirements when substituting between narrow and wide SOIC packages.