ADUM1402WSRWZ33-RL

Overview

The ADUM1402WSRWZ33-RL is a four-channel digital isolator from Analog Devices, designed for robust signal transmission across isolation barriers. It operates on a single supply voltage ranging from 2.7 V to 5.5 V and supports data rates up to 1 Mbit/s. The device features unidirectional channels with two transmitters and two receivers, housed in a 16-pin SOIC W package. Key electrical specifications include a minimum common-mode transient immunity of 25 kV/µs and a maximum propagation delay of 100 ns. It provides 2500 Vrms isolation voltage and functions within an industrial temperature range of -40°C to +125°C.

Feature Summary

• Utilizes iCoupler magnetic coupling technology for high-speed digital signal isolation without external transformers.
• Provides robust protection against high-frequency noise with a minimum common-mode transient immunity of 25 kV/µs.
• Supports flexible logic interface requirements with CMOS-compatible inputs and outputs across all four channels.
• Ensures reliable operation in harsh environments through extended industrial temperature rating and wide supply voltage range.

Applications

• Industrial automation systems requiring isolated communication between microcontrollers and sensors.
• Medical equipment needing galvanic isolation for patient safety and signal integrity.
• Power electronics control circuits where high-voltage isolation is critical for gate drive signals.
• Automotive electronic control units (ECUs) utilizing AEC-Q100 qualified components for reliability.

Procurement Notes

Verify the specific suffix '33' against official Analog Devices documentation to confirm pinout configuration and functional equivalence, as suffixes often denote specific packaging or version variants. Ensure compatibility with existing PCB footprints and design-in requirements before procurement. Cross-reference the part number with the latest datasheet revision to avoid discrepancies in electrical characteristics or mechanical dimensions.

Selection Notes

Select this component when a four-channel isolator with 1 Mbit/s data rate is required for cost-sensitive applications. It is suitable for designs needing 2500 Vrms isolation with low power consumption compared to optical isolators. Consider the SOIC-16 package width for board space constraints. Verify that the unidirectional channel configuration meets the system's signal flow requirements without additional buffering.

Part Context

This part belongs to the ADUM1402 family of digital isolators, which are widely used in industrial and automotive sectors. The family offers various channel counts and data rates, with the ADUM1402 specifically providing four channels at moderate speeds. The 'W' indicates a wide-body SOIC package, enhancing creepage and clearance distances. The 'RL' suffix typically denotes reel packaging for automated assembly processes.

Replacement Considerations

Direct replacements may include other ADUM1402 variants such as ADUM1402CRW or ADUM1402WSRWZ, provided the pinout and electrical parameters match. Verify if alternative manufacturers offer compatible parts with similar isolation voltages and data rates. Ensure any substitute maintains the same package dimensions and thermal characteristics to fit existing designs without modification.