ADUM1446ARSZ-RL7

Digital Isolators Overview

The ADUM1446ARSZ-RL7 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 data rates up to 2 Mb/s. The device features bidirectional channels with a typical propagation delay of 180 ns and a common-mode transient immunity of 25 kV/µs. Packaged in a 20-SSOP format, it provides an isolation voltage of 3750 Vrms and functions reliably across an extended temperature range of -40°C to +125°C.

Digital Isolators Feature Summary

• Integrates four independent digital isolation channels using proprietary iCoupler magnetic coupling technology for robust signal transmission.
• Delivers high common-mode transient immunity of 25 kV/µs to maintain signal integrity in electrically noisy environments.
• Optimized for low power consumption, making it suitable for battery-powered or energy-constrained applications.
• Supports bidirectional data flow across all channels, simplifying circuit design for complex interface requirements.

Digital Isolators Applications

• Isolating SPI and I2C interfaces in industrial automation systems
• Protecting control circuits in medical equipment against electrical faults
• Signal isolation in renewable energy inverters and solar microinverters
• Data communication barriers in automotive electronic control units

Digital Isolators Procurement Notes

Verify the specific suffix RL7 indicates reel packaging when sourcing components. Confirm that the 20-SSOP package matches your PCB footprint requirements. Ensure the operating voltage range aligns with your system's logic levels. Check for RoHS compliance status if required by your manufacturing standards. Validate availability through authorized distributors due to potential supply fluctuations.

Digital Isolators Selection Notes

Choose this component when bidirectional isolation is required for multiple low-speed digital lines. It is ideal for designs prioritizing low power consumption over high-speed data throughput. Consider the 20-SSOP package size constraints during layout planning. Select this part if a 3750 Vrms isolation barrier meets your safety certification needs. Evaluate thermal performance at maximum operating temperatures before final integration.

Digital Isolators Part Context

This device belongs to the ADUM1446 series of micro-power digital isolators. It represents Analog Devices' iCoupler technology, which replaces traditional optocouplers with on-chip transformer isolation. The series offers improved reliability and smaller form factors compared to legacy isolation solutions. It serves as a modern alternative for applications requiring robust galvanic isolation in compact spaces.

Digital Isolators Replacement Considerations

ADUM1446ARQZ is a verified substitute offering identical electrical specifications in a QSOP-16 package. ADUM1446ARSZ provides the same functionality in a standard SSOP-20 configuration without reel packaging. Verify pin compatibility and thermal characteristics when transitioning between these package variants.