ADUM3471ARSZ

Overview

The ADUM3471ARSZ is a four-channel digital isolator manufactured by Analog Devices Inc., utilizing iCoupler magnetic coupling technology. 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 provides an isolation voltage of 2500 Vrms and exhibits a common-mode transient immunity of 25 kV/µs. Key timing parameters include a maximum propagation delay of 60 ns, pulse width distortion of 8 ns, and typical rise/fall times of 2.5 ns. It functions reliably across an operating temperature range of -40°C to +105°C and is housed in a 20-lead SSOP package.

Feature Summary

• Integrates four independent bidirectional signal channels with integrated transformer drivers for compact design.
• Employs proprietary iCoupler magnetic coupling technology to provide robust galvanic isolation without external components.
• Delivers high-speed performance with low propagation delay and minimal pulse width distortion for precise timing.
• Features high common-mode transient immunity to maintain signal integrity in electrically noisy environments.

Applications

• Industrial automation systems requiring isolated communication interfaces
• Medical equipment needing reliable patient isolation barriers
• Power electronics control circuits for motor drives and inverters
• Test and measurement instrumentation with high-voltage isolation requirements

Procurement Notes

Verify the specific suffix ARSZ against official Analog Devices documentation to confirm the tape-and-reel packaging configuration and lead-free status. Ensure compatibility with standard surface-mount assembly processes. Cross-reference the manufacturer part number with authorized distributors to confirm current availability and authenticity. Check for any recent product change notices that may affect specifications or recommended soldering profiles.

Selection Notes

Select this component when bidirectional isolation is required for four separate signal paths within a single package. Consider the 2500 Vrms isolation rating and 25 kV/µs CMTI for harsh industrial environments. Evaluate the 60 ns propagation delay against system timing constraints. Compare power consumption and package dimensions against alternative isolators if space or energy efficiency is critical.

Part Context

The ADUM3471 belongs to the ADUM347x family of general-purpose digital isolators from Analog Devices. This series leverages silicon dioxide insulation layers on CMOS substrates to achieve high reliability. The ARSZ variant specifically denotes the reel-packaged version of the 20-lead SSOP device, distinguishing it from tube-packaged counterparts like the CRSZ.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source material. Verify functional equivalence with other iCoupler family members such as the ADUM3471CRSZ for packaging differences or the ADUM3481 for higher isolation ratings only after consulting official Analog Devices substitution guides.