ADUM3470CRSZ-RL7

Overview

The ADUM3470CRSZ-RL7 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 propagation delay of 60 ns and a pulse width distortion of 6 µs. It is housed in a 20-pin SSOP package and is designed for operation across a temperature range of -40°C to +105°C.

Feature Summary

• Integrates four independent channels with internal transformer drivers for robust magnetic isolation.
• Provides bidirectional signal transmission capability across all isolated channels.
• Delivers high common-mode transient immunity through proprietary iCoupler technology.

Applications

• Industrial automation systems requiring galvanic isolation between control and power stages.
• Medical equipment needing reliable signal isolation for patient safety compliance.
• Power metering applications involving high-voltage sensing interfaces.

Procurement Notes

Verify the specific suffix RL7 indicates reel packaging when sourcing. Confirm RoHS compliance status through official manufacturer documentation prior to integration. Ensure the SSOP-20 footprint matches your PCB layout requirements. Check for any recent product change notices regarding manufacturing site updates or material substitutions.

Selection Notes

Select this component when bidirectional communication is required across four isolated channels. Compare against unidirectional variants like the ADUM3471 if directionality constraints exist. Evaluate thermal performance within the SSOP-20 package for your specific ambient conditions. Consider the 2500 Vrms isolation rating against system voltage requirements.

Part Context

This part belongs to the ADUM347x series of digital isolators, which are designed for high-reliability applications. The series includes variants with different channel counts and directionality options. The ADUM3470 specifically addresses needs for bidirectional data transfer in compact form factors.

Replacement Considerations

Direct substitutes within the same family include the ADUM3472CRSZ-RL7 for bidirectional use or ADUM3471WCRSZ-RL7 for automotive qualification. Verify pin compatibility and electrical specifications before swapping components.