ADUM3471ARSZ-RL7

Overview

The ADUM3471ARSZ-RL7 is a quad-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 unidirectional channel configuration with a typical propagation delay of 55 ns and rise/fall times of 3 ns. It provides an insulation voltage of 2500 Vrms and functions reliably across an operating temperature range of -40°C to +105°C. Packaged in an SSOP-20 format, it draws approximately 46 mA of quiescent current.

Feature Summary

• Integrates an internal transformer driver to eliminate the need for external isolation components
• Provides bidirectional or unidirectional signal isolation via magnetic coupling technology
• Supports high-speed digital communication with low propagation delay characteristics

Applications

• Industrial automation systems requiring galvanic isolation
• Medical equipment needing reinforced safety isolation
• Power metering applications with high-voltage separation requirements

Procurement Notes

Verify the specific suffix RL7 indicates reel packaging when ordering. Confirm the ARSZ designation corresponds to the industrial temperature grade and SSOP-20 package variant. Ensure compatibility with system voltage levels between 3 V and 5.5 V before integration. Check for updated availability status as supply constraints may affect lead times.

Selection Notes

Select this component when unidirectional isolation is required for four independent channels. Compare against the ADUM3471CRSZ variant if a commercial temperature range suffices. Consider the ADUM3480 series if bidirectional data flow is necessary instead. Evaluate power consumption needs given the 46 mA quiescent current draw during operation.

Part Context

This part belongs to the ADUM3471 family of isolated switching regulators and digital isolators. It shares the SSOP-20 footprint with other members like the ADUM3471CRSZ. The series emphasizes compact design for space-constrained industrial and medical PCB layouts while maintaining robust isolation performance.

FAQ

Does the ADUM3471ARSZ-RL7 support bidirectional data transmission?

No, the ADUM3471 variant is configured for unidirectional signal isolation only.

What is the maximum insulation voltage rating for this device?

The device provides an insulation voltage of 2500 Vrms.