ADUM3402BRWZ

Overview

The ADuM3402BRWZ is a quad-channel digital isolator utilizing Analog Devices iCoupler technology, which integrates high-speed CMOS circuitry with monolithic air-core transformer capabilities. This component provides electrical isolation between separate system domains while transmitting digital signals. It operates within a supply voltage range of 2.7 V to 5.5 V and supports data rates up to 10 Mbps for this specific speed grade. The device features a 2500 Vrms isolation rating and a common-mode transient immunity (CMTI) exceeding 25 kV/µs. It is housed in a 16-lead SOIC wide-body package and functions across an industrial temperature range from -40°C to +105°C.

Feature Summary

• Utilizes iCoupler magnetic coupling technology to replace traditional optocouplers, offering superior reliability and lower power consumption.
• Provides bidirectional communication capability with integrated 3.3 V to 5 V level translation for flexible interface compatibility.
• Features enhanced system-level ESD performance compliant with IEC 61000-4-x standards, ensuring robust operation in noisy environments.
• Includes an output enable function to manage signal states and reduce power consumption when communication is inactive.

Applications

• General-purpose multichannel isolation in mixed-signal systems
• Isolation for SPI interfaces and data converters
• RS-232, RS-422, and RS-485 transceiver isolation
• Industrial field bus isolation networks

Procurement Notes

Verify the specific suffix BRWZ to confirm the 10 Mbps data rate variant, as other suffixes may indicate different speeds such as 90 Mbps. Ensure the procurement documentation references the RoHS3 compliance status and the correct 16-lead SOIC package dimensions. Confirm that the source is an authorized distributor to guarantee authenticity, as counterfeit isolators can compromise safety ratings. Check for any recent PCN updates regarding manufacturing site changes or material revisions before finalizing orders.

Selection Notes

Select the ADuM3402BRWZ when four isolated channels are required for general-purpose digital signal transmission at moderate speeds. This part is suitable for applications needing high CMTI to reject noise in industrial settings. Consider the power consumption profiles at specific data rates to ensure thermal management aligns with the design constraints. Verify that the 2500 Vrms isolation barrier meets the safety requirements of the target application's regulatory standards.

Part Context

This component belongs to the ADuM3400/ADuM3401/ADuM3402 family of quad-channel digital isolators. These devices share the same physical footprint and pinout but differ primarily in their maximum data rate specifications. The ADuM3402 series represents the standard performance tier within this lineup, balancing speed and power efficiency for broad industrial use cases.

Replacement Considerations

Public confirmed substitute part numbers include ADUM3402CRWZ for higher speed requirements. Other variants within the ADuM3400 series may serve as functional replacements if channel count and isolation voltage match the design needs.

FAQ

What is the maximum common-mode transient immunity of the ADuM3402BRWZ?

The device offers a common-mode transient immunity (CMTI) greater than 25 kV/µs, making it resistant to fast voltage spikes.

Does the ADuM3402BRWZ support bidirectional communication?

Yes, the isolator supports bidirectional communication and includes built-in 3.3 V to 5 V level translation capabilities.

What packaging does the ADuM3402BRWZ utilize?

It is available in a 16-lead SOIC wide-body package that is RoHS-compliant and suitable for surface-mount assembly.