ADUM3400BRWZ

Overview

The ADUM3400BRWZ is a quad-channel digital isolator utilizing Analog Devices iCoupler technology, which integrates high-speed CMOS circuitry with monolithic air-core transformer coils. This device provides bidirectional signal isolation across four independent channels within a single 16-lead SOIC package. It operates on a supply voltage range of 2.7 V to 5.5 V and supports data rates up to 90 Mb/s. Key electrical specifications include a propagation delay of 32 ns, rise and fall times of 3 ns, and a common-mode transient immunity of 25 kV/µs. The unit is rated for an insulation voltage of 2500 Vrms and functions reliably within an operating temperature range of -40°C to +105°C.

Feature Summary

• Integrates high-speed CMOS logic with monolithic air-core transformer technology for magnetic coupling isolation.
• Provides bidirectional data transmission across four independent isolated channels.
• Delivers high common-mode transient immunity to maintain signal integrity in noisy environments.
• Operates without the need for external bias voltages or complex driver circuits.

Applications

• Industrial automation systems requiring robust galvanic isolation between control and power stages.
• Medical equipment interfaces needing certified safety isolation for patient-connected components.
• Power electronics monitoring circuits where high-voltage noise rejection is critical.
• Data acquisition systems connecting low-voltage microcontrollers to high-voltage sensor arrays.

Procurement Notes

Verify the specific suffix against official Analog Devices documentation to confirm channel directionality and speed class. The BRWZ designation indicates a tube package variant; ensure compatibility with automated assembly equipment if applicable. Confirm RoHS compliance status through current manufacturer declarations as regulatory requirements may evolve. Cross-reference the datasheet revision date to ensure alignment with latest electrical characteristics and pinout definitions before finalizing procurement orders.

Selection Notes

Select this component when bidirectional communication is required across four isolated channels. Compare the 90 Mb/s data rate capability against system timing requirements to ensure adequate margin. Evaluate the 2500 Vrms insulation rating against safety standards relevant to the target application environment. Consider the 16-SOIC footprint constraints relative to available PCB space and thermal management capabilities during the design phase.

Part Context

This part belongs to the ADuM3400 series of digital isolators from Analog Devices. The series leverages proprietary iCoupler technology to replace traditional optocouplers, offering superior performance in terms of speed, power consumption, and reliability. The ADuM3400BRWZ specifically represents the quad-channel variant designed for general-purpose isolation tasks requiring bidirectional data flow.

Replacement Considerations

Official substitutes within the same family include the ADUM3401BRWZ (unidirectional) and ADUM3402BRWZ (unidirectional). Verify that the replacement matches the required channel directionality and data rate specifications. Ensure the physical package dimensions and pinout remain compatible with the existing board layout to avoid redesign efforts.