ADUM4473ARIZ

Overview

The ADUM4473ARIZ is a general-purpose digital isolator featuring four independent signal channels and an integrated isolated power supply. It utilizes magnetic coupling technology to provide electrical isolation with a rated voltage of 5000Vrms. The device supports data rates up to 1Mbps for the signal channels and offers a common-mode transient immunity (CMTI) of 25kV/µs. It operates within a supply voltage range of 3V to 3.6V or 4.5V to 5.5V and functions across a temperature range of -40°C to 105°C. The component is housed in a 20-SOIC package.

Feature Summary

• Integrates four unidirectional signal channels with an isolated DC-to-DC converter for simultaneous power and data transmission.
• Employs iCoupler magnetic coupling technology to achieve high common-mode transient immunity without requiring external magnetics.
• Provides galvanic isolation between primary and secondary sides, eliminating ground loops and protecting sensitive circuitry.

Applications

• Isolated gate driver circuits for power electronics
• Industrial communication interfaces such as RS-485 and CAN
• Medical equipment requiring reinforced isolation
• Inverters and motor control systems

Procurement Notes

Verify the specific suffix against official Analog Devices documentation to confirm package type and tape-and-reel specifications. Ensure compatibility with system isolation requirements by checking the rated isolation voltage and CMTI values. Confirm RoHS compliance status and moisture sensitivity level prior to assembly planning.

Selection Notes

Select this component when both signal isolation and isolated power delivery are required in a single package. Consider the 1Mbps data rate limit and 25kV/µs CMTI for noise-heavy environments. Evaluate the 20-SOIC footprint constraints and thermal performance under continuous load conditions.

Part Context

This part belongs to the ADuM447x family of IsoPower digital isolators from Analog Devices. These devices combine high-speed signal isolation with integrated isolated switching regulators, simplifying design by removing the need for separate isolated power supplies in multi-channel applications.

Replacement Considerations

ADUM4473ARIZ-RL is a verified equivalent variant offering identical electrical characteristics but supplied in reel packaging instead of tubes.

FAQ

What is the maximum data rate supported by the signal channels?

The signal channels support a maximum data rate of 1Mbps.

Does the device include an isolated power supply?

Yes, it integrates an isolated DC-to-DC converter capable of delivering power to the secondary side.