ADUM7441CRQZ-RL7

Overview

The ADUM7441CRQZ-RL7 is a quad-channel digital isolator utilizing iCoupler technology, combining high-speed CMOS with monolithic air-core transformer capabilities. It operates within a supply voltage range of 3.0 V to 5.5 V and supports data rates up to 25 Mb/s. The device features a 1000 Vrms insulation voltage and provides bidirectional signal transmission. Key electrical parameters include a propagation delay of 50 ns, typical rise/fall times of 2.8 ns, and a common-mode transient immunity of 15 kV/µs. It functions reliably across an operating temperature range of -40°C to +105°C.

Feature Summary

• Integrates four independent isolation channels within a compact QSOP-16 package, significantly reducing board space compared to standard SOIC wide-body alternatives.
• Employs magnetic coupling via monolithic air-core transformers to provide robust isolation without the limitations of optical components.
• Includes input glitch filters to suppress noise interference and ensures default high-level outputs when input power is absent.

Applications

• General-purpose isolated communication interfaces requiring basic isolation standards
• Industrial systems needing compact, low-power signal isolation
• Embedded applications utilizing mixed voltage domains (3.3 V and 5 V)

Procurement Notes

Verify the specific suffix RL7 indicates reel packaging configuration during sourcing. Confirm that the QSOP-16 footprint matches your PCB design constraints. Ensure compatibility with the required 3.0 V to 5.5 V supply rails for your target application environment.

Selection Notes

Select this component when space efficiency is critical alongside reliable digital isolation. It serves as a suitable alternative to optocouplers where lower power consumption and higher speed are required. Consider the 1000 Vrms rating sufficient for basic isolation needs rather than reinforced isolation requirements.

Part Context

This part belongs to the ADuM744x series of quad-channel digital isolators from Analog Devices. The series leverages iCoupler technology to offer performance advantages over traditional optocouplers, including lower power dissipation and smaller physical dimensions while maintaining regulatory compliance for safety standards.

Replacement Considerations

Direct functional substitutes within the same family include the ADUM7440 and ADUM7442 models. These variants share identical pinouts and core technologies but may differ in channel directionality or specific timing characteristics. Verify datasheet details before substitution.