ADUM3474ARSZ

Overview

The ADUM3474ARSZ is a quad-channel digital isolator from Analog Devices, featuring an integrated transformer driver. It utilizes iCoupler magnetic coupling technology to provide bidirectional data transmission at speeds up to 25 Mb/s. The device operates on supply voltages between 3 V and 5.5 V and offers an insulation voltage of 2500 Vrms. Key electrical parameters include a propagation delay of 60 ns and a pulse width capability of 40 µs. It is housed in a 20-lead SSOP package and supports an operating temperature range from -40°C to +105°C.

Feature Summary

• Integrates a transformer driver for PWM controller applications
• Provides four bidirectional isolation channels
• Utilizes iCoupler magnetic coupling technology

Applications

• PWM controllers requiring isolated feedback
• Industrial automation systems
• Power supply designs with galvanic isolation needs

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm the specific suffix matches the required packaging format, as availability varies by region. Check current stock status due to potential limited supply conditions. Ensure compliance with RoHS directives and verify lead times prior to finalizing procurement plans.

Selection Notes

Select this component when high-speed bidirectional isolation is required alongside integrated power stage driving capabilities. The inclusion of the transformer driver simplifies design complexity compared to discrete solutions. Evaluate thermal performance within the specified temperature range and ensure the SSOP-20 footprint fits the target PCB layout constraints.

Part Context

This part belongs to the ADUM3474 series, designed specifically for applications needing both signal isolation and gate drive functionality. It consolidates multiple functions into a single package, reducing board space and component count. The series is engineered for robust performance in noisy industrial environments.

Replacement Considerations

Check for updated revisions within the same series. Verify pin compatibility if considering alternative manufacturers. Ensure equivalent isolation ratings and data rates are maintained for safety compliance.