ADUM4400ARIZ-RL

Overview

The ADUM4400ARIZ-RL is a general-purpose digital isolator manufactured by Analog Devices Inc. It features four independent channels with unidirectional signal transmission capabilities. The device operates within a supply voltage range of 2.7 V to 5.5 V and supports data rates up to 1 Mb/s. Key electrical specifications include a propagation delay of 32 ns, typical rise and fall times of 3 ns, and a common-mode transient immunity of 25 kV/µs. It provides 5000 Vrms isolation voltage and maintains an operating temperature range from -40 °C to +105 °C.

Feature Summary

• Provides magnetic coupling-based digital isolation for four independent signal channels
• Supports unidirectional data transmission with integrated dead-time functionality
• Features high common-mode transient immunity for noise-resistant operation

Applications

• Industrial automation systems requiring galvanic isolation
• Medical equipment signal interfacing
• Power electronics control circuits

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS compliance status and check for specific packaging variations such as reel or cut tape options. Ensure the supplier provides valid traceability documentation to mitigate risks associated with counterfeit components in the supply chain.

Selection Notes

Select this component when four-channel unidirectional isolation is required with moderate data rates. Consider the SOIC-16 package constraints and verify that the 1 Mb/s speed meets system timing requirements. Evaluate thermal performance within the specified temperature range and ensure compatibility with the target logic voltage levels.

Part Context

This part belongs to the ADUM4400 series of digital isolators, which utilize iCoupler technology for on-chip isolation. The series is designed to replace traditional optocouplers in applications demanding higher reliability and lower power consumption. The ARIZ suffix indicates a specific industrial-grade variant with defined environmental and operational characteristics.

Replacement Considerations

Cross-reference with other ADUM4400 variants for pin-compatible alternatives. Verify functional equivalence regarding channel count, isolation voltage, and data rate before substitution.