ADUM4470ARIZ-RL

Overview

The ADUM4470ARIZ-RL is a general-purpose digital isolator from Analog Devices Inc., utilizing iCoupler magnetic coupling technology. It features four unidirectional channels with a 5000Vrms isolation voltage and a data rate of 25Mbps. The device operates on supply voltages of 3V to 3.6V or 4.5V to 5.5V, offering a common-mode transient immunity of 25kV/µs. It is housed in a 20-SOIC package and supports an operating temperature range of -40°C to +105°C.

Feature Summary

• Integrates IsoPower technology for combined signal and power isolation within a single component.
• Employs iCoupler magnetic coupling architecture to provide robust galvanic isolation without external magnetics.
• Delivers high common-mode transient immunity suitable for noisy industrial environments.

Applications

• Industrial automation systems requiring isolated communication interfaces.
• Medical equipment needing reinforced electrical safety isolation.
• Power electronics control circuits involving PWM signals.

Procurement Notes

Verify the specific suffix 'RL' indicates tape-and-reel packaging when ordering. Confirm RoHS3 compliance status for environmental regulations. Ensure the 20-SOIC_IC footprint matches the PCB layout requirements. Check for moisture sensitivity level (MSL) handling precautions during assembly.

Selection Notes

Select this part for applications requiring four independent unidirectional isolation channels. Compare propagation delay specifications against system timing constraints. Evaluate power consumption differences between 3V and 5V operation modes. Consider the wide-body SOIC package dimensions for thermal management and board space.

Part Context

This component belongs to the ADuM447x family of digital isolators. It shares architectural similarities with variants like ADUM4471 and ADUM4472 but differs in channel configuration and directionality. The family utilizes proprietary CMOS processes to integrate isolation barriers directly onto the silicon die.

Replacement Considerations

ADUM4470CRIZ is a parameter-equivalent alternative available in tube packaging. Verify pinout compatibility and packaging differences before substitution. Cross-reference datasheet revisions to ensure functional equivalence.