ADUM3474ARSZ-RL7

Overview

The ADUM3474ARSZ-RL7 is a quad-channel digital isolator integrated with an isolated DC/DC converter, manufactured by Analog Devices Inc. It operates within a supply voltage range of 3 V to 5.5 V and supports bidirectional data transmission at speeds up to 25 Mb/s. The device provides 2500 Vrms isolation via magnetic coupling technology. Key electrical characteristics include a propagation delay of 60 ns and a pulse width tolerance of 40 µs. It functions reliably across an extended temperature range from -40°C to +105°C and is housed in a compact SSOP-20 surface-mount package.

Feature Summary

• Integrates four high-speed digital isolators with an on-chip isolated power supply for simplified system design
• Provides robust galvanic isolation between primary and secondary sides using proprietary magnetic coupling technology
• Supports bidirectional communication channels suitable for complex interface protocols requiring high noise immunity

Applications

• Industrial automation systems requiring isolated gate drive signals
• Medical equipment needing reinforced isolation for patient safety
• Inverters and motor drives utilizing PWM control with isolated feedback

Procurement Notes

Verify the specific suffix RL7 corresponds to the required reel packaging configuration before ordering. Confirm that the SSOP-20 footprint matches your PCB layout constraints. Ensure the operating environment stays within the specified thermal limits to maintain signal integrity. Check for any recent product change notifications regarding material or manufacturing updates.

Selection Notes

Select this component when both high-speed data isolation and isolated power delivery are required in a single package. It is suitable for applications where board space is limited and multiple isolated channels are necessary. Consider the 25 Mb/s data rate capability against your system's timing requirements. Evaluate the 2500 Vrms isolation rating against your safety standards compliance needs.

Part Context

This part belongs to the ADUM3474 series, which combines digital isolation with power conversion capabilities. It is designed to replace traditional discrete solutions involving separate isolators and transformer drivers. The integration reduces component count and simplifies layout compared to non-integrated alternatives in the same category.

Replacement Considerations

Public confirmed substitute part numbers: None.