ADUM3211ARZ-RL7

Overview

The ADUM3211ARZ-RL7 is a dual-channel digital isolator from Analog Devices Inc., utilizing iCoupler technology for galvanic isolation. It features a 2500Vrms isolation voltage and supports data transmission rates up to 1Mbps with a common-mode transient immunity of 25kV/µs. The device operates on a supply voltage range of 3V to 5.5V, drawing a typical supply current of 1.1mA per channel at 5V. It provides level translation between 3.3V and 5V logic levels and includes enhanced system-level ESD protection compliant with IEC 61000-4-x standards. The component is housed in an 8-pin narrow-body SOIC package.

Feature Summary

• Dual-channel digital isolation using proprietary iCoupler magnetic coupling technology
• Enhanced system-level electrostatic discharge protection meeting IEC 61000-4-x standards
• Integrated 3.3V and 5V level translation capabilities for flexible interface compatibility
• Default low output state configuration for reliable power-up behavior

Applications

• Industrial automation systems requiring isolated signal transmission
• Medical equipment needing high reliability and safety isolation
• Power electronics control circuits with high common-mode noise environments
• General-purpose digital isolation in instrumentation and measurement devices

Procurement Notes

Verify the specific suffix RL7 indicates reel packaging when ordering. Confirm the ARZ designation corresponds to the industrial temperature range and RoHS compliance status required for your assembly process. Ensure the 8-SOIC footprint matches your PCB design constraints. Cross-reference the manufacturer part number with authorized distributors to confirm current availability and authenticity.

Selection Notes

Select this component when dual-channel isolation is required within a compact 8-pin footprint. It is suitable for applications demanding 2500Vrms isolation with 1Mbps data rates. Consider the 3.3V/5V level translation feature if interfacing different logic families. Evaluate the 1.1mA supply current against power budget constraints. Verify that the 25kV/µs CMTI rating meets the noise environment requirements of the target application.

Part Context

This part belongs to the ADUM3211 series of iCoupler digital isolators. It shares the same core architecture as other variants in the family but is specifically configured for dual-channel operation with default low outputs. The series leverages Analog Devices' silicon dioxide insulation technology to provide robust isolation without the need for external transformers or capacitors.

Replacement Considerations

Direct replacements include other ADUM3211 variants such as ADUM3211BRZ-RL7, which may differ in temperature grade or manufacturing site. Verify pinout compatibility and electrical specifications before substitution. Alternative manufacturers offer similar dual-channel isolators, but ensure isolation voltage and CMTI ratings match or exceed the original requirements.