ADUM3473ARSZ

Overview

The ADUM3473ARSZ is a four-channel digital isolator from Analog Devices, utilizing magnetic coupling technology for signal transmission. It operates within a supply voltage range of 3 V to 5.5 V and supports data rates up to 25 Mb/s. The device features bidirectional channel polarity and offers an insulation voltage rating of 2500 Vrms. Key electrical parameters include a typical propagation delay of 60 ns and a pulse width distortion of 40 µs. It is housed in a 20-lead SSOP package and is designed for operation across an extended temperature range from -40°C to +105°C.

Feature Summary

• Integrates four independent bidirectional channels with internal transformer drivers for compact isolation solutions.
• Employs iCoupler magnetic coupling technology to provide high common-mode transient immunity without optical components.
• Supports wide operating supply voltages compatible with both 3 V and 5 V logic systems.

Applications

• Industrial automation control systems requiring galvanic isolation
• Medical equipment signal interfaces
• Power metering and energy management circuits

Procurement Notes

Verify the specific suffix and package variant against the official datasheet to ensure compatibility with design requirements. Confirm availability status through authorized distributors as supply conditions may vary. Ensure compliance with RoHS directives and check for any recent product change notices affecting specifications or packaging.

Selection Notes

Select this component when four isolated bidirectional channels are required in a single package. Compare propagation delay and power consumption against other iCoupler variants if specific timing or efficiency constraints exist. Ensure the SSOP-20 footprint fits the PCB layout constraints and thermal management requirements of the target application.

Part Context

This part belongs to the ADUM347x family of digital isolators, which provides integrated isolation solutions using on-chip transformer technology. The family includes unidirectional and bidirectional variants with different channel counts and speed capabilities, offering designers flexibility in creating robust isolated communication interfaces.

Replacement Considerations

Check for direct pin-compatible substitutes within the ADUM347x series, such as the ADUM3470 or ADUM3474, depending on channel directionality needs. Verify that alternative parts meet the same insulation voltage and data rate specifications before substitution.