ADUM4473CRIZ

Overview

The ADUM4473CRIZ is a quad-channel digital isolator from Analog Devices, designed for high-speed data transmission across isolation barriers. It features four independent channels with a propagation delay of 45 ns and a common-mode transient immunity (CMTI) of 25 kV/µs. The device operates on supply voltages between 3 V and 5.5 V, drawing an operating supply current of 50 mA. It provides an insulation rating of 5 kV rms, supporting isoPower and standard digital isolator interface protocols.

Feature Summary

• Provides four independent isolation channels for simultaneous signal transmission
• High common-mode transient immunity ensures reliable operation in noisy environments
• Supports isoPower interface protocol for integrated isolated power management
• Capacitive isolation technology offers robust barrier performance

Applications

• Isolated switching regulators
• Industrial automation systems requiring galvanic isolation
• Medical equipment with safety isolation requirements
• Data acquisition systems with multiple isolated inputs

Procurement Notes

Verify the specific suffix CRIZ to confirm package type and temperature range compatibility with your design. Confirm that the 5 kV rms insulation rating meets your application's safety standards. Check for RoHS compliance status if required by your manufacturing process. Ensure the 50 mA supply current fits within your thermal budget constraints.

Selection Notes

Select this component when four independent isolation channels are required in a single package. Consider the 45 ns propagation delay for timing-sensitive applications. Evaluate the 25 kV/µs CMTI against the noise environment of your system. Compare the 50 mA supply current against power consumption limits for battery-operated or low-power designs.

Part Context

The ADUM4473CRIZ belongs to the ADuM447x family of quad-channel digital isolators. This series includes variants like ADUM4470 through ADUM4474, offering different channel configurations and data rates. These devices utilize Analog Devices' capacitive isolation technology to provide high-performance isolation in compact packages suitable for modern electronic designs.

Replacement Considerations

Direct substitutes include other members of the ADuM447x family such as ADUM4470, ADUM4471, ADUM4472, and ADUM4474, depending on specific channel configuration needs. Verify pinout compatibility and electrical parameter alignment before substitution.