ADUM1412BRWZ

Overview

The ADUM1412BRWZ is a quad-channel digital isolator utilizing Analog Devices iCoupler technology, which integrates high-speed CMOS logic with monolithic air-core transformer coupling. This component provides four independent isolation channels within a single 16-lead SOIC package. It supports data rates up to 10 Mbps and operates on supply voltages ranging from 2.7 V to 5.5 V on both sides of the isolation barrier. The device features a 3750 Vrms insulation voltage rating and offers a common-mode transient immunity (CMTI) of 25 kV/µs. Typical propagation delay is 65 ns, with rise and fall times of approximately 2.5 ns. It includes a default output control pin for defining logic states during power-up or input loss.

Feature Summary

• Integrates four independent digital isolation channels using magnetic coupling technology without LEDs or photodiodes
• Provides stable performance characteristics that eliminate nonlinear transfer functions and current transfer ratio uncertainties associated with optocouplers
• Includes a patented refresh feature to ensure DC correctness during power-up, power-down, or absence of input logic transitions
• Supports voltage translation functionality across the isolation barrier due to dual-side supply voltage compatibility

Applications

• Industrial automation systems requiring robust signal isolation
• Medical equipment needing reliable galvanic isolation
• Power metering applications involving high-voltage separation
• General-purpose isolated communication interfaces

Procurement Notes

Verify the specific suffix against official Analog Devices documentation to confirm channel configuration and speed ratings. Ensure the ordering part number matches the required package style and temperature range. Cross-reference datasheet revisions to confirm compliance with current RoHS standards and material declarations before finalizing procurement orders.

Selection Notes

Select this component when designing circuits that require multiple isolated digital signals in a compact footprint. It serves as a direct replacement for traditional optocouplers where lower power consumption and higher reliability are priorities. Consider the 10 Mbps data rate limit and 25 kV/µs CMTI specification to ensure compatibility with the target system's noise environment and signal timing requirements.

Part Context

This device belongs to the ADuM141x family of quad-channel digital isolators. The family utilizes iCoupler technology to replace discrete isolation components. Variants within the series differ primarily in data rate capabilities and channel configurations, such as 3:1 or 4:0 arrangements, while maintaining similar packaging and basic electrical characteristics.

Replacement Considerations

Publicly confirmed substitute part numbers include ADUM1412ARWZ and ADUM1412BRWZ-RL. Verify that alternative variants match the required data rate and insulation voltage specifications for the specific application context.