ADUM1447ARQZ

Digital Isolators Overview

The ADUM1447ARQZ is a micro-power quad-channel digital isolator from Analog Devices, utilizing iCoupler magnetic coupling technology. It operates within a supply voltage range of 2.25 V to 3.6 V and supports data rates up to 2 Mbps. The device provides 2500 Vrms isolation voltage with a common-mode transient immunity (CMTI) of 25 kV/µs. Propagation delays are typically 80 ns for the ADUM1442 variant or 180 ns for the ADUM1447 variant, with power consumption around 612 µA per channel. It is housed in a 16-lead QSOP package and functions across an operating temperature range of -40°C to +125°C.

Digital Isolators Feature Summary

• Integrates four independent bidirectional channels using proprietary iCoupler magnetic coupling technology for signal transmission.
• Provides robust electrical isolation with high common-mode transient immunity to protect sensitive circuits from noise.
• Delivers low power consumption suitable for battery-operated applications while maintaining high-speed data integrity.

Digital Isolators Applications

• Industrial automation systems requiring galvanic isolation between controllers and sensors
• Medical equipment needing safe patient isolation interfaces
• Power electronics monitoring circuits in renewable energy inverters

Digital Isolators Procurement Notes

Verify the specific suffix against official Analog Devices documentation to confirm pinout and functional configuration, as variants like ADUM1442 and ADUM1447 differ in propagation delay and internal architecture. Ensure the QSOP-16 package matches your PCB footprint requirements. Confirm RoHS compliance status through current manufacturer datasheets before finalizing procurement specifications.

Digital Isolators Selection Notes

Select this component when designing systems requiring four isolated digital channels with moderate speed requirements up to 2 Mbps. Consider the 2500 Vrms isolation rating for safety-critical applications. Evaluate the 16-lead QSOP package constraints against available board space. Compare power dissipation characteristics against thermal management capabilities if operating at maximum ambient temperatures.

Digital Isolators Part Context

This part belongs to the ADUM144x series of micro-power digital isolators. It shares the same physical package and basic isolation principles with other members like ADUM1440 and ADUM1442 but differs in internal logic directionality and timing parameters. The series represents Analog Devices' implementation of silicon-based magnetic isolation technology.

Digital Isolators Replacement Considerations

Publicly confirmed substitute part numbers are not explicitly listed in the provided source material. Designers should consult Analog Devices for qualified replacements or verify compatibility with generic quad-channel isolators by matching isolation voltage, data rate, and package dimensions.