ADUM5402CRWZ

Overview

The ADUM5402CRWZ is a quad-channel digital isolator from Analog Devices, featuring an integrated isoPower isolated DC/DC converter. It provides four independent signal isolation channels supporting data rates up to 25 Mbps using Non-Return-to-Zero (NRZ) encoding. The device operates with a supply voltage range of 3 V to 5.5 V and delivers a regulated output of either 3.3 V or 5.0 V from the internal converter, capable of up to 500 mW output power. It offers 2500 Vrms insulation voltage via magnetic coupling technology in a 16-pin SOIC package.

Feature Summary

• Integrates an isoPower isolated DC/DC converter for compact power delivery
• Provides four independent bidirectional signal isolation channels
• Utilizes iCoupler chip-scale transformer technology for magnetic coupling
• Delivers regulated 3.3 V or 5.0 V output without external magnetics

Applications

• RS-232, RS-422, and RS-485 transceiver isolation
• Industrial fieldbus isolation
• Isolated sensor interfaces
• Power supply biasing and gate driving
• Industrial PLC systems

Procurement Notes

Verify the specific suffix 'CRWZ' to confirm the tube packaging format, as the 'RL' suffix indicates reel packaging. Ensure compatibility with the required operating temperature range of -40°C to +105°C. Confirm that the 2500 Vrms isolation rating meets the safety requirements of the target application. Check for moisture sensitivity handling instructions during storage and assembly.

Selection Notes

Select this component when a single-package solution for both signal isolation and isolated power generation is required. It eliminates the need for separate isolated DC/DC converters, reducing board space. Consider the 25 Mbps data rate limit and 500 mW power budget against system demands. Verify that the 16-pin SOIC footprint fits the design constraints.

Part Context

This part belongs to the ADuM540x family of quad-channel digital isolators. The series includes variants like ADUM5401, ADUM5403, and ADUM5404, which differ primarily in channel directionality configurations. All members share the core isoPower technology and similar electrical characteristics, offering flexibility in designing complex isolated communication systems.

Replacement Considerations

Direct substitutes within the same family include ADUM5401CRWZ, ADUM5403CRWZ, and ADUM5404CRWZ. These parts maintain identical pinouts and electrical specifications but offer different combinations of unidirectional and bidirectional channel directions. Ensure the chosen variant matches the specific signal flow requirements of the circuit.