ADUM4474CRIZ

Overview

The ADUM4474CRIZ is a quad-channel digital isolator from Analog Devices, featuring a regulated DC-to-DC isolated power supply. It provides four channels of data isolation with a maximum data rate of 25 Mb/s and a common-mode transient immunity of 25 kV/µs. The device operates within a supply voltage range of 3 V to 5.5 V and offers an insulation voltage rating of 5000 Vrms. It supports unidirectional signal transmission and functions across an operating temperature range of -40°C to +105°C.

Feature Summary

• Integrates a regulated DC-to-DC converter for isolated power delivery
• Provides four independent digital isolation channels
• Features high common-mode transient immunity

Applications

• Industrial automation systems
• Power supply control circuits
• Motor drive applications

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm the specific suffix 'I' indicates industrial temperature grade and 'Z' denotes lead-free status. Ensure storage conditions account for moisture sensitivity levels as indicated in the datasheet. Validate that the SOIC-20 package dimensions match your PCB footprint requirements before finalizing procurement orders.

Selection Notes

Select this component when simultaneous data isolation and isolated power generation are required in a single package. It is suitable for designs needing high-speed digital communication across isolation barriers with integrated power management. Consider the 25 Mb/s data rate limit and 5000 Vrms insulation rating against system voltage and speed requirements. Evaluate thermal performance within the specified -40°C to +105°C range for your application environment.

Part Context

This part belongs to the ADuM447x family of quad-channel digital isolators. These devices combine magnetic coupling technology with on-chip power conversion to simplify system design by eliminating external isolated power supplies. The series is designed for robust performance in noisy industrial environments requiring reliable galvanic isolation between circuit sections.

Replacement Considerations

Direct substitutes include other members of the ADuM447x family such as ADUM4470, ADUM4471, ADUM4472, and ADUM4473, which share similar packaging and basic functionality but may differ in channel configuration or specific electrical characteristics. Verify pin compatibility and isolation ratings before substitution.