ADUM5402WCRWZ-1RL

Overview

The ADUM5402WCRWZ-1RL is a quad-channel digital isolator from Analog Devices, featuring an integrated isoPower isolated DC/DC converter. It utilizes iCoupler magnetic coupling technology to provide four independent signal isolation channels with unidirectional polarity. The device supports data rates up to 25 Mb/s and offers an insulation voltage of 2500 Vrms. It operates on a supply voltage range of 3 V to 5.5 V, drawing approximately 71 mA of operating current. The component is housed in a 16-pin SOIC package and functions within a temperature range of -40°C to +105°C.

Feature Summary

• Integrates an isoPower isolated DC/DC converter providing up to 500 mW of regulated power output.
• Employs iCoupler chip-level transformer technology for simultaneous isolation of logic signals and power paths.
• Provides high common-mode transient immunity exceeding 25 kV/µs across all four channels.

Applications

• Isolation for RS-232, RS-422, and RS-485 transceivers
• Industrial fieldbus isolation systems
• Isolated sensor interface circuits
• Power supply biasing and gate drive applications

Procurement Notes

Verify the specific suffix 'W' indicates wide body packaging and '-1' denotes channel configuration against the official datasheet. Confirm RoHS compliance status and moisture sensitivity level prior to ordering. Ensure PCB layout adheres to AN-0971 guidelines to manage emissions from the internal switching regulator.

Selection Notes

Select this component when a compact solution requires both signal isolation and isolated power generation in a single package. It is suitable for designs where space constraints prevent the use of separate isolators and DC/DC converters. Verify that the 25 Mbps data rate meets system requirements and that the 2500 Vrms insulation rating satisfies safety standards.

Part Context

This part belongs to the ADuM540x family of quad-channel digital isolators. These devices are designed to replace traditional optocoupler-based solutions by offering superior performance in speed, power consumption, and size. The integration of the DC/DC converter simplifies the design of isolated power domains in industrial and communication equipment.

Replacement Considerations

Cross-reference with ADUM5401, ADUM5403, and ADUM5404 variants. Differences lie in channel directionality (unidirectional vs. bidirectional) and input/output pin configurations. Ensure the replacement matches the required polarity and channel arrangement for the specific application circuit.