ADUM7442ARQZ-RL7

Overview

The ADUM7442ARQZ-RL7 is a quad-channel digital isolator utilizing iCoupler technology. It features a data rate of 1 Mb/s and an insulation voltage of 1000 Vrms. The device operates on a supply voltage between 3 V and 5.5 V with a typical operating current of 3.2 mA. Propagation delay is 75 ns, with rise and fall times of 2.8 ns. It is housed in a QSOP-16 package and functions within a temperature range of -40°C to +105°C.

Feature Summary

• Integrates four independent bidirectional channels for signal isolation using magnetic coupling technology.
• Provides high common-mode transient immunity to prevent noise interference across the isolation barrier.
• Features input glitch filters to ensure signal integrity against external noise spikes.
• Delivers default logic high output states when input power is absent.

Applications

• Industrial automation systems requiring galvanic isolation
• Medical equipment signal processing interfaces
• Power metering and energy monitoring circuits

Procurement Notes

Verify component authenticity through authorized Analog Devices distributors or certified partners. Confirm the specific AR suffix indicates the extended temperature grade (-40°C to +105°C) and QSOP-16 packaging. Request original manufacturer documentation to validate lot codes and traceability before finalizing acquisition.

Selection Notes

Select this model for applications requiring four isolated channels at 1 Mb/s speeds. It is suitable where board space is limited compared to standard SOIC packages. Ensure the system voltage aligns with the 3 V to 5.5 V operating range. Consider the 1000 Vrms isolation rating against the required safety standards for the specific application environment.

Part Context

This component belongs to the ADUM744x series of quad-channel digital isolators. It replaces older optocoupler technologies by offering lower power consumption and smaller footprint. The series supports various channel configurations and data rates, providing a robust solution for modern interface isolation needs.

Replacement Considerations

Direct substitutes include ADUM7440ARQZ-RL7 and ADUM7441ARQZ-RL7 from the same family. Verify that the alternative part number matches the required data rate and isolation voltage specifications for the target circuit design.

FAQ

What is the default output state if the input power fails?

All models in this series provide a default logic high output state when there is no input power.

Does the device support voltage translation across the isolation barrier?

Yes, the isolators are compatible with low-voltage systems and can perform voltage translation across the isolation barrier.