ADUM1280WBRZ-RL7

Overview

The ADUM1280WBRZ-RL7 is a dual-channel digital isolator from Analog Devices, utilizing magnetic coupling technology for signal transmission across isolation barriers. It features bidirectional data flow with a maximum data rate of 100 Mb/s and an insulation voltage rating of 3000 Vrms. The device operates within a supply voltage range of 2.7 V to 5.5 V, consuming typical power supply currents of 9.5 mA and 20 mA depending on the channel state. Propagation delay is specified at 23 ns, with rise and fall times of 3 ns. It supports an operating temperature range from -40°C to +125°C and is housed in an SOIC-8 surface-mount package.

Feature Summary

• Provides galvanic isolation between circuits using capacitive or magnetic coupling mechanisms to prevent ground loops and protect sensitive components.
• Supports high-speed digital communication with data rates up to 100 Mb/s, suitable for demanding industrial and automotive applications.
• Features bidirectional signal transmission capability, allowing flexible integration into various system architectures requiring two-way data exchange.

Applications

• Industrial automation systems requiring robust signal isolation
• Automotive electronics meeting AEC-Q100 qualification standards
• Medical equipment needing high-voltage isolation safety
• Power supply control circuits for isolated gate driving

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS compliance status and check for specific packaging variants such as reel or cut tape options. Ensure the ordering suffix matches required specifications. Review datasheet revisions for any updates to electrical characteristics or recommended footprint layouts before finalizing procurement decisions.

Selection Notes

Choose this model when bidirectional isolation is required alongside high data throughput capabilities. Consider the 3000 Vrms insulation rating for applications demanding enhanced safety margins. Evaluate power consumption profiles against system thermal constraints. Compare propagation delays with timing requirements of connected interfaces. Assess package compatibility with existing PCB layout designs.

Part Context

This component belongs to the ADUM1280 series of small, low-power digital isolators. It shares architectural similarities with other members like the ADUM1280ARZ but differs in polarity configuration and speed grades. The series emphasizes compact size and reliable performance in space-constrained environments while maintaining strict isolation standards defined by industry regulations.

Replacement Considerations

Direct substitutes include ADUM1280CRZ-RL7 for unidirectional high-speed needs. For lower speed requirements, consider ADUM1280ARZ-RL7. Cross-reference pinouts and electrical parameters carefully when swapping between different polarity configurations within the same family to ensure functional compatibility.