ADUM3153ARSZ-RL7

Overview

The ADUM3153ARSZ-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 propagation delay of 25 ns and a common-mode transient immunity of 25 kV/µs. It functions in unidirectional mode with five input channels on one side and two output channels on the other. The component is housed in a 20-SSOP package and is rated for operation between -40°C and +125°C.

Feature Summary

• Optimized for high-speed SPI communication with low propagation delay and jitter
• Integrates multiple signal paths into a single compact package
• Provides robust galvanic isolation via magnetic coupling technology

Applications

• Distributed control systems in industrial automation
• Programmable logic controllers
• Sensor monitoring applications

Procurement Notes

Verify the specific suffix RL7 indicates reel packaging when sourcing. Confirm the 3750 Vrms isolation rating matches system safety requirements. Ensure the 20-SSOP footprint aligns with PCB layout constraints. Check for moisture sensitivity handling instructions during storage and assembly.

Selection Notes

Select this component when designing isolated SPI interfaces requiring integration of both high-speed clock/data lines and slower status signals. Consider the 20-SSOP package size for space-constrained designs. Evaluate the 3750 Vrms isolation barrier against system voltage requirements. Compare power consumption figures if battery-operated applications are involved.

Part Context

This part belongs to the ADuM315x family, which includes variants like ADUM3150, ADUM3151, and ADUM3152. These devices share the same core iCoupler technology and SPI optimization but differ in channel configuration and directionality. The ADUM3153 specifically provides a seven-channel solution tailored for complex SPI master-slave architectures.

Replacement Considerations

Direct substitutes within the same family include ADUM3150, ADUM3151, and ADUM3152. Verify channel count and directionality compatibility before substitution. Cross-reference pinouts to ensure mechanical and electrical interchangeability.