ADUM3153BRSZ-RL7

Overview

The ADUM3153BRSZ-RL7 is a seven-channel digital isolator from the ADuM315x SPIsolator series, designed for serial peripheral interface (SPI) communication systems. It utilizes iCoupler magnetic coupling technology to provide galvanic isolation with a rating of 3750 Vrms. The device supports data rates up to 2 Mbps and operates within a supply voltage range of 3 V to 5.5 V. Key electrical parameters include a maximum propagation delay of 25 ns and a common-mode transient immunity of 25 kV/µs. It is housed in a 20-SSOP package and functions as an unidirectional isolator for SPI signals.

Feature Summary

• Optimized for high-speed SPI communication with low propagation delay and jitter on clock and data channels
• Integrates seven isolated channels in a single package to reduce component count and board space
• Provides robust galvanic isolation using iCoupler magnetic coupling technology
• Supports standard SPI signal types including MOSI, MISO, SCLK, and chip select

Applications

• Distributed control systems in industrial automation
• Programmable logic controllers (PLCs)
• Sensor monitoring interfaces
• Motor control applications requiring SPI isolation

Procurement Notes

Verify the specific suffix 'BRSZ' against the manufacturer's current datasheet to confirm pinout and functional equivalence with other variants like 'ARSZ'. Ensure the reel packaging specification matches production requirements. Confirm RoHS compliance status through official documentation before integration into regulated assemblies.

Selection Notes

Select this component when designing SPI-based systems requiring high channel density and robust isolation. The seven-channel configuration simplifies designs by integrating multiple signal paths. Consider the 3750 Vrms isolation rating for safety-critical applications. Evaluate the 2 Mbps data rate against system timing requirements to ensure adequate performance margins.

Part Context

This part belongs to the ADuM315x family of SPIsolator digital isolators developed by Analog Devices. The series leverages iCoupler technology to replace traditional optocouplers, offering significantly smaller size and lower cost while maintaining high speed. The ADUM3153 variant specifically targets applications needing multiple isolated SPI lines within a compact footprint.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided source material.