ADUM4400WBRWZ

Overview

The ADUM4400WBRWZ is a quad-channel digital isolator from Analog Devices, utilizing iCoupler magnetic coupling technology. It operates on a single 3.0 V to 5.5 V supply and provides four independent isolation channels with unidirectional signal transmission. The device supports data rates up to 90 Mbps and features a 5000 Vrms insulation voltage rating. Key electrical parameters include a maximum propagation delay of 32 ns, pulse width distortion under 2 ns, and common-mode transient immunity exceeding 25 kV/µs. It functions within an operating temperature range of -40°C to +105°C and is housed in a 16-lead wide-body SOIC package.

Feature Summary

• Integrates high-speed CMOS logic with monolithic air-core transformer technology for robust signal isolation
• Provides enhanced system-level ESD protection compliant with IEC 61000-4-x standards
• Includes patented refresh circuitry to maintain DC correctness during input hold states and power transitions
• Features integrated input glitch filters to suppress noise interference

Applications

• General-purpose high-voltage multi-channel isolation systems
• Medical equipment requiring reinforced isolation barriers
• Motor drive control circuits
• Power supply feedback loops

Procurement Notes

Verify the specific suffix WBRWZ against official Analog Devices documentation to confirm the tape-and-reel packaging configuration and lead finish specifications. Ensure compatibility with moisture sensitivity levels and reflow soldering profiles defined in the manufacturer's datasheet before procurement.

Selection Notes

Select this component when high channel density and low power consumption are required in a compact footprint. The unidirectional architecture suits applications where signal flow is strictly one-way across the isolation barrier. Consider the 90 Mbps rate capability for high-speed digital interfaces requiring significant galvanic separation.

Part Context

This part belongs to the ADuM440x family of 5 kV RMS quad-channel digital isolators. It represents a shift from optical couplers to magnetic coupling, offering superior speed and lower power dissipation. The series is designed for industrial and medical environments demanding reliable long-term performance and regulatory compliance.

Replacement Considerations

Cross-reference with ADUM4400 variants such as ADUM4400CRWZ or ADUM4400BRIZ for pin-compatible alternatives. Verify that substitute parts match the required insulation voltage, data rate, and package dimensions before implementation.

FAQ

Does the ADUM4400 support bidirectional communication?

No, the ADUM4400 is configured for unidirectional signal transmission only.

What is the maximum common-mode transient immunity?

The device offers a typical common-mode transient immunity greater than 25 kV/µs.