ADUM7442CRQZ-RL7

Overview

The ADUM7442CRQZ-RL7 is a quad-channel digital isolator utilizing iCoupler technology, combining high-speed CMOS with monolithic air-core transformer capabilities. It features four independent isolation channels supporting bidirectional data transmission at rates up to 25 Mbps. The device operates on a single power supply ranging from 3.0 V to 5.5 V and provides an insulation voltage of 1000 Vrms. Key electrical parameters include a propagation delay of 50 ns, typical rise/fall times of 2.8 ns, and a pulse width distortion of less than 5 ns for the C-grade variant. It functions within a temperature range of -40°C to +105°C.

Feature Summary

• Integrates four independent digital isolation channels using magnetic coupling technology to replace traditional optocouplers.
• Provides bidirectional signal transmission with input glitch filtering to prevent noise interference.
• Features default logic-high outputs when input power is absent, ensuring safe state initialization.
• Supports voltage translation across the isolation barrier while maintaining compatibility with low-voltage systems.

Applications

• Industrial automation systems requiring robust signal isolation
• Medical equipment needing certified basic isolation barriers
• Power metering applications with high common-mode transient immunity requirements
• General-purpose isolated communication interfaces

Procurement Notes

Verify the specific suffix RL7 indicates reel packaging configuration during sourcing. Confirm RoHS compliance status through official manufacturer documentation prior to integration. Ensure the QSOP-16 package dimensions match the target PCB footprint constraints. Validate that the 1000 Vrms insulation rating meets the safety standards required for the intended application environment.

Selection Notes

Select this component when space efficiency is critical, as the QSOP-16 package occupies significantly less board area than standard SOIC-16 alternatives. Choose this part for applications requiring moderate data rates up to 25 Mbps rather than higher-speed variants. Consider this device for designs needing bidirectional isolation with inherent voltage translation capabilities between different domain voltages.

Part Context

This component belongs to the ADuM744x series of quad-channel digital isolators from Analog Devices. It shares the same core iCoupler architecture and physical QSOP-16 footprint as the ADUM7440 and ADUM7441 models. The primary distinction lies in its specific channel configuration and data rate specifications tailored for general-purpose isolation tasks.

Replacement Considerations

Direct functional substitutes within the same family include ADUM7440CRQZ-RL7 and ADUM7441CRQZ-RL7. Verify pinout compatibility and specific insulation voltage ratings before swapping, as these variants may differ in channel directionality or maximum data throughput specifications.