ADUM3471CRSZ-RL7

Overview

The ADUM3471CRSZ-RL7 is a four-channel digital isolator from Analog Devices, 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 features bidirectional signal transmission with an insulation voltage rating of 2500 Vrms and a common-mode transient immunity of 25 kV/µs. Propagation delay is typically 60 ns, with a pulse width distortion of 8 ns maximum. 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 internal transformer drivers for compact, high-reliability magnetic isolation
• Provides bidirectional communication capability across all four channels
• Delivers high common-mode transient immunity to ensure signal integrity in noisy environments

Applications

• Industrial automation control systems requiring galvanic isolation
• Medical equipment interfaces demanding safety-certified isolation barriers
• Power electronics monitoring circuits involving high-voltage switching

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 constraints. Cross-reference the datasheet revision date to confirm parameter accuracy against current production standards.

Selection Notes

Select this component when bidirectional data transfer is required alongside robust noise immunity. The integrated transformer driver simplifies design compared to discrete solutions. Consider the 2500 Vrms isolation rating for applications exceeding standard low-voltage limits. Evaluate the 25 Mb/s speed against system timing requirements to ensure adequate performance margins.

Part Context

This part belongs to the ADUM347x series of general-purpose digital isolators. It shares the same core architecture as the ADUM3470 and ADUM3473 variants but differs in channel directionality configuration. The CRSZ designation specifies the commercial temperature grade and SSOP-20 package style within the broader iCoupler product family.

Replacement Considerations

The ADUM3470ARSZ-RL7 serves as a functional substitute within the same series, offering identical electrical specifications and pinout compatibility. Verify that the alternative part number meets the specific directional requirements of the circuit design before substitution.