ADUM1402ARW

Overview

The ADUM1402ARW is a quad-channel digital isolator utilizing Analog Devices iCoupler technology, which integrates high-speed CMOS logic with monolithic air-core transformer capabilities. This architecture provides electrical isolation without the limitations of optical components, such as current transfer ratio uncertainty or temperature-dependent degradation. The device supports bidirectional signal transmission across four independent channels with a data rate of 1Mbps and an isolation voltage rating of 2500Vrms. It operates within a supply voltage range of 2.7V to 5.5V and features a propagation delay of up to 100ns per channel. Packaged in a 16-pin SOIC wide body, it offers a common-mode transient immunity of 25kV/µs.

Feature Summary

• Eliminates design difficulties associated with optocouplers by removing the need for LEDs and photodiodes, thereby avoiding issues related to non-linear transmission functions and aging effects.
• Integrates magnetic coupling technology to provide stable performance characteristics and simplified digital interfaces without requiring external discrete driver components.
• Delivers superior power efficiency compared to optical alternatives, consuming significantly lower power at comparable signal data rates.

Applications

• General-purpose digital isolation between low-voltage control circuits and high-voltage power stages
• Signal transmission in industrial automation systems requiring galvanic isolation
• Data communication interfaces where noise immunity and component longevity are critical

Procurement Notes

Verify part status carefully as the ADUM1402ARW may be discontinued or obsolete depending on the specific manufacturing lot and distributor inventory. Confirm that the 16-SOIC package dimensions match your PCB footprint requirements. Ensure that the 2500Vrms isolation rating meets your system's safety standards. Check for RoHS compliance documentation if required for your region. Validate that the 1Mbps data rate is sufficient for your application's timing constraints before finalizing procurement.

Selection Notes

Select this component when a quad-channel solution is required for general-purpose digital isolation. It is suitable for applications needing moderate data speeds up to 1Mbps rather than high-speed gigabit links. Consider the 16-pin SOIC package size for board space constraints. Evaluate the 2500Vrms isolation barrier against your system's voltage stress requirements. Compare power consumption benefits against legacy optocoupler designs to justify the transition to iCoupler technology.

Part Context

The ADUM1402ARW belongs to the ADuM140x family of quad-channel digital isolators from Analog Devices. This series leverages proprietary iCoupler technology to replace traditional optocouplers in various interface applications. The family includes variants with different data rates and channel configurations, but the ADUM1402 specifically focuses on providing four isolated channels with standard speed performance for robust signal integrity.

Replacement Considerations

Public confirmed substitute part numbers include ADUM1402A.

FAQ

How does the iCoupler technology differ from traditional optocouplers?

iCoupler technology uses monolithic air-core transformers instead of LEDs and photodiodes, eliminating issues like current transfer ratio uncertainty, non-linear transmission, and degradation over time or temperature.

What is the maximum data rate supported by the ADUM1402ARW?

The ADUM1402ARW supports a maximum data rate of 1Mbps.