ADUM1442ARQZ

Digital Isolators Overview

The ADUM1442ARQZ 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 bidirectional data transmission at rates up to 2 Mb/s. The device features an insulation voltage of 2500 Vrms and a common-mode transient immunity of 25 kV/µs. Typical propagation delay is 80 ns. 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 isolation channels using on-chip transformer technology for high-density applications.
• Provides bidirectional signal transmission with low power consumption suitable for battery-operated systems.
• Offers robust noise immunity through high common-mode transient rejection capabilities.

Digital Isolators Applications

• General-purpose low-power multichannel isolation
• Low power peripheral interface (SPI) isolation
• 4mA to 20mA loop process controls

Digital Isolators Procurement Notes

Verify the specific suffix 'ARQZ' to confirm the 16-lead QSOP package variant. Confirm RoHS compliance status as indicated in official documentation. Ensure the bidirectional channel configuration matches system requirements, as other variants in the series may offer unidirectional options. Cross-reference the manufacturer part number with authorized distributor listings to validate authenticity and current production status.

Digital Isolators Selection Notes

Select this component when four isolated channels are required in a compact surface-mount footprint. The bidirectional nature allows flexible signal routing compared to unidirectional alternatives. Consider the 2.25 V to 3.6 V supply range compatibility with existing logic levels. Evaluate the thermal performance given the specified power dissipation limits within the QSOP enclosure for the target application environment.

Digital Isolators Part Context

This device belongs to the ADuM144x family of micro-power digital isolators. These components leverage Analog Devices' iCoupler technology to replace traditional optocouplers. The family includes variants with different channel counts and directionality configurations, all sharing similar core isolation specifications and packaging options for scalable design integration.

Digital Isolators Replacement Considerations

Direct substitutes include other members of the ADuM144x series such as the ADUM1440 or ADUM1441, provided their channel directionality aligns with the circuit design. Verify pinout compatibility and electrical parameters before substitution.