ADUM4151ARIZ-RL

Overview

The ADuM4151ARIZ-RL is a 7-channel digital isolator optimized for isolated serial peripheral interfaces (SPI). It utilizes iCoupler chip scale transformer technology to provide high-speed isolation for SPI bus signals, supporting clock rates up to 17 MHz with 14 ns propagation delay and 1 ns jitter. The device includes four high-speed channels and three additional independent low-data-rate channels operating at 250 kbps. It features a 5000 Vrms isolation voltage, common-mode transient immunity greater than 25 kV/µs, and operates within a temperature range of -40°C to +125°C in a 20-lead SOIC package.

Feature Summary

• Optimized for SPI applications with low propagation delay and jitter on clock and data lines
• Integrates four high-speed channels and three auxiliary low-speed channels for flexible interface configurations
• Provides robust isolation with high common-mode transient immunity exceeding 25 kV/µs
• Supports extended industrial temperature operation up to 125°C

Applications

• Industrial programmable logic controllers (PLCs)
• Sensor isolation systems
• Isolated serial peripheral interface networks

Procurement Notes

Verify the specific suffix against official Analog Devices documentation to confirm packaging and revision details. Ensure compatibility with system voltage levels and thermal requirements before integration. Confirm regulatory approvals such as UL, CSA, and VDE meet target market standards. Check current availability status as supply may be limited or subject to factory order constraints.

Selection Notes

Select this component when designing isolated SPI interfaces requiring high speed and multiple channel counts. The integrated auxiliary channels reduce board space compared to discrete solutions. Consider the 20-lead SOIC package dimensions for layout planning. Evaluate the 5000 Vrms isolation rating against system safety requirements and creepage distances.

Part Context

This part belongs to the ADuM415x family of SPIsolator digital isolators from Analog Devices. These devices are designed specifically for serial peripheral interface applications, offering a compact alternative to traditional optocouplers. The family includes variants like the ADuM4152 and ADuM4153 with different channel directionality options.

Replacement Considerations

Direct substitutes include other members of the ADuM415x family, such as the ADUM4152ARIZ-RL or ADUM4153ARIZ-RL, which offer similar specifications but with different auxiliary channel directionality configurations.