ADUM4151ARIZ

Overview

The ADuM4151ARIZ is a seven-channel digital isolator optimized for isolated serial peripheral interfaces. It features four high-speed channels supporting SPI clock rates up to 17 MHz with 14 ns propagation delay and 1 ns jitter. Three additional independent low-data-rate channels operate at 250 kbps with up to 2.5 μs jitter. The device provides 5000 Vrms isolation voltage, operates from -40°C to +125°C, and offers common-mode transient immunity exceeding 25 kV/μs in a 20-lead SOIC package.

Feature Summary

• Optimized for SPI bus signals with low propagation delay and jitter
• Provides three independent auxiliary data channels with configurable directionality
• High common-mode transient immunity for noisy industrial environments
• Compliant with international safety standards including UL, CSA, and VDE

Applications

• Industrial programmable logic controllers
• Sensor isolation systems
• Isolated communication interfaces

Procurement Notes

Verify the specific suffix ARIZ against the manufacturer datasheet to confirm package type and temperature range. Confirm regulatory approvals such as UL 1577 or VDE conformity if required by your design specifications. Ensure compatibility with system voltage levels and timing requirements before integration.

Selection Notes

Select this component when designing isolated SPI interfaces requiring high-speed data transfer alongside auxiliary control lines. The integrated auxiliary channels reduce board space compared to using separate isolators. Verify that the 17 MHz clock speed meets your application's maximum data rate requirements.

Part Context

This part belongs to the ADuM4151 family of SPIsolator digital isolators. These devices utilize iCoupler chip-scale transformer technology to provide robust isolation between microcontrollers and peripheral devices. The family includes variants with different channel configurations and directionality options for flexible system design.

Replacement Considerations

Check for direct substitutes within the ADUM4151 series, such as ADUM4152 or ADUM4153, which offer similar functionality but may differ in auxiliary channel directionality or specific electrical characteristics. Ensure pinout compatibility before substitution.