ADUM4473ARIZ-RL

Overview

The ADUM4473ARIZ-RL is a quad-channel digital isolator from Analog Devices Inc., featuring an integrated isolated switching regulator. It provides 5000Vrms isolation and supports data rates up to 1Mbps with a common-mode transient immunity of 25kV/µs. The device operates on supply voltages of 3V–3.6V and 4.5V–5.5V, with maximum propagation delays of 100ns. It is housed in a 20-SOIC package and functions within a temperature range of -40°C to 105°C.

Feature Summary

• Integrates a regulated dc-to-dc isolated power supply controller with four unidirectional digital channels.
• Utilizes magnetic coupling technology for signal transmission across the isolation barrier.
• Provides high common-mode transient immunity to maintain signal integrity in noisy environments.

Applications

• Isolated gate driver circuits
• PWM control systems
• Transducer loop interfaces

Procurement Notes

Verify the specific suffix 'RL' indicates tape-and-reel packaging when ordering. Confirm RoHS compliance status and moisture sensitivity level (MSL 3) requirements against your assembly process specifications. Ensure the 20-SOIC footprint matches your PCB layout constraints before finalizing procurement.

Selection Notes

Select this component when both high-speed digital isolation and integrated isolated power generation are required in a single package. Compare propagation delay and CMTI specifications against system noise margins. Verify that the 1Mbps data rate meets the application's throughput needs compared to higher-speed alternatives in the ADuM447x family.

Part Context

This part belongs to the ADuM447x series of IsoPower digital isolators. These devices combine analog isolation capabilities with power management, reducing component count in designs requiring galvanic separation between control and power stages.

Replacement Considerations

Public confirmed substitute part numbers: ADUM4470ARIZ-RL, ADUM4471ARIZ-RL, ADUM4472ARIZ-RL, ADUM4474ARIZ-RL.