ADUM3470ARSZ-RL7

Overview

The ADUM3470ARSZ-RL7 is a four-channel digital isolator from Analog Devices, utilizing iCoupler magnetic coupling technology. It integrates a PWM controller and transformer driver for isolated DC/DC power conversion. The device supports bidirectional signal transmission at data rates up to 25 Mb/s with a propagation delay of 60 ns. It offers an insulation voltage of 2500 Vrms and operates within a temperature range of -40°C to +105°C. Powered by a 3 V to 5.5 V supply, it features a 20-pin SSOP package and includes protection mechanisms such as soft start and thermal shutdown.

Feature Summary

• Integrates PWM controller and transformer driver for isolated power generation
• Provides four independent bidirectional signal isolation channels
• Utilizes iCoupler chip-scale transformer technology for compact design

Applications

• Isolated DC/DC converter designs
• RS-232, RS-422, and RS-485 transceiver isolation
• Industrial fieldbus isolation
• Gate drive and power supply biasing
• Isolated sensor interfaces

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm the specific suffix matches project requirements. Check current availability status as supply may be limited. Ensure compliance with relevant safety certifications for the target application environment.

Selection Notes

Select this component when a combined signal isolation and isolated power solution is required in a single package. It is suitable for applications needing high CMTI and low profile. Consider alternative models if higher insulation voltage or different channel directionality is needed.

Part Context

This part belongs to the ADuM347x series of quad-channel digital isolators. These devices are designed to replace traditional optocouplers and discrete transformer drivers. The series supports various configurations for industrial and automotive applications requiring robust galvanic isolation.

Replacement Considerations

Check ADUM3470ARSZ for reel quantity differences. Verify ADUM3471/3472/3473 for unidirectional variants. Ensure pinout compatibility before substitution.