ADUM1440ARQZ-RL7

Digital Isolators Overview

The ADUM1440ARQZ-RL7 is a micro-power, quad-channel digital isolator from Analog Devices Inc., utilizing 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 speeds up to 2 Mb/s. The device provides an isolation voltage of 2500 Vrms and features a typical propagation delay of 180 ns with a working power current of 732 uA. It is housed in a 16-pin QSOP package and functions reliably across an operating temperature range of -40°C to +125°C.

Digital Isolators Feature Summary

• Integrates four independent bidirectional channels for simultaneous signal isolation
• Employs iCoupler magnetic coupling technology for galvanic isolation without transformers or optocouplers
• Designed for low-power applications with micro-ampere class current consumption
• Supports high common-mode transient immunity for noise-sensitive environments

Digital Isolators Applications

• Industrial automation systems requiring isolated communication interfaces
• Medical equipment needing reliable patient-side isolation barriers
• Power metering circuits for energy monitoring and control
• Inverter drives and motor control units for feedback isolation

Digital Isolators Procurement Notes

Verify the specific suffix RL7 indicates reel packaging when sourcing. Confirm the QSOP-16 package variant matches your PCB footprint requirements. Check for recent Product Change Notifications regarding manufacturing updates. Ensure compliance with RoHS directives if required by your region. Validate that the bidirectional channel configuration aligns with your circuit design needs.

Digital Isolators Selection Notes

Choose this component when bidirectional data flow is required across all four channels. Select over unidirectional variants like the ADUM140E1BRQZ-RL7 if reverse signaling is necessary. Consider the ADUM1441ARSZ-RL7 if a different package type such as SSOP-20 is preferred. Evaluate the ADUM1442ARQZ-RL7 if unidirectional channels are sufficient to reduce complexity. Ensure the 2.25 V to 3.6 V supply range fits your system power architecture.

Digital Isolators Part Context

This part belongs to the ADuM144x series of micro-power digital isolators. It shares core iCoupler technology with siblings like the ADUM1441 and ADUM1442. The series focuses on replacing traditional optocouplers in space-constrained designs. It serves as a direct replacement for legacy isolation components in industrial and medical standards.

Digital Isolators Replacement Considerations

The ADUM1441ARSZ-RL7 offers identical electrical performance but uses an SSOP-20 package. The ADUM1442ARQZ-RL7 provides similar specs but with unidirectional channels only. Verify pinout compatibility before substituting these alternatives.