ADUM7441ARQZ

Overview

The ADUM7441ARQZ is a quad-channel digital isolator utilizing iCoupler technology, combining high-speed CMOS with monolithic air core transformer capabilities. It provides a 1000 Vrms isolation rating and supports bidirectional communication at data rates up to 25 Mbps (NRZ). The device operates within a 3 V to 5.5 V supply range, featuring low power consumption of 2.25 mA per channel maximum at 5 V for speeds up to 1 Mbps. It offers high common-mode transient immunity exceeding 15 kV/μs and functions reliably across an extended temperature range from -40°C to +105°C.

Feature Summary

• Integrates four independent channels for general-purpose multichannel isolation
• Provides robust 1000 Vrms insulation rating with UL and CSA safety approvals
• Supports bidirectional communication with 3 V/5 V level translation capability

Applications

• SPI interface and data converter isolation
• RS-232, RS-422, and RS-485 transceiver isolation
• Industrial field bus isolation systems

Procurement Notes

Verify component authenticity through authorized Analog Devices distributors or certified partners. Confirm the specific package variant matches design requirements, as suffixes may indicate reel packaging options. Ensure compliance with RoHS directives and check current availability status, as supply constraints may affect lead times. Validate that the received part number corresponds exactly to the specified QSOP-16 configuration.

Selection Notes

Select this component when high-density, low-power isolation is required for multiple signal lines simultaneously. It is suitable for designs needing superior performance compared to optocouplers, particularly where small form factor and high common-mode transient immunity are critical. Consider the 16-lead QSOP package for space-constrained PCB layouts requiring four isolated channels.

Part Context

This device belongs to the ADuM744x series of quad-channel digital isolators. It shares architectural similarities with the ADUM7440 but differs in specific regulatory approval statuses and minor electrical characteristics. The series leverages proprietary iCoupler technology to replace traditional optoisolators, offering improved reliability and smaller footprint for industrial and communication applications.

Replacement Considerations

The ADUM7440ARQZ serves as a related alternative within the same family, offering similar quad-channel isolation capabilities. Verify specific regulatory certifications and exact electrical parameter tolerances before substitution, as differences may exist between variants regarding official safety recognition.