ADUM1441ARQZ

Digital Isolators Overview

The ADUM1441ARQZ is a micropower, quad-channel digital isolator utilizing Analog Devices iCoupler magnetic coupling technology. It operates within a supply voltage range of 2.25 V to 3.6 V and supports bidirectional data transmission at rates up to 2 Mb/s. The device provides 2500 Vrms isolation with a common-mode transient immunity of 25 kV/µs. Typical operating currents are 552 µA and 672 µA per channel. Propagation delay is specified at 80 ns. It functions reliably across an extended temperature range from -40°C to +125°C and is housed in a 16-lead QSOP package.

Digital Isolators Feature Summary

• Integrates four independent bidirectional channels for simultaneous signal isolation
• Employs on-chip transformer-based magnetic coupling for galvanic isolation
• Delivers high common-mode transient immunity for robust noise rejection
• Supports low-power operation suitable for battery-driven or energy-constrained systems

Digital Isolators Applications

• Industrial process control systems requiring isolated communication interfaces
• Medical equipment needing safe patient isolation barriers
• Power management circuits with isolated feedback loops
• General-purpose isolated digital signal transmission in harsh environments

Digital Isolators Procurement Notes

Verify the specific ordering suffix against official Analog Devices documentation to confirm package type and tape-and-reel versus tube packaging configurations. Ensure that the selected variant matches the required insulation ratings and thermal specifications for the target application environment. Cross-reference the manufacturer part number with authorized distributors to confirm current availability status and compliance with regional regulatory standards such as RoHS directives before finalizing procurement orders.

Digital Isolators Selection Notes

Select this component when designing systems requiring multiple isolated digital channels within a compact footprint. Consider the 2.25 V to 3.6 V supply range compatibility with standard logic families. Evaluate the 80 ns propagation delay against system timing requirements. Confirm that the 2500 Vrms isolation rating meets safety standards for the intended electrical separation distance. Assess power consumption needs relative to the specified microampere operating currents.

Digital Isolators Part Context

This device belongs to the ADuM144x series of micropower digital isolators. These components leverage proprietary iCoupler technology to replace traditional optocouplers. The series offers improved performance in terms of speed, power efficiency, and reliability. The ADUM1441ARQZ specifically provides four isolated channels, distinguishing it from dual-channel variants in the same family while maintaining similar operational characteristics and package dimensions.

Digital Isolators Replacement Considerations

Public confirmed substitute part numbers include ADUM1440ARQZ, ADUM1442ARQZ, ADUM1445ARQZ, ADUM1446ARQZ, and ADUM1447ARQZ.