ADUM1401BRW-RL

Overview

The ADUM1401BRW-RL is a quad-channel digital isolator from Analog Devices, utilizing iCoupler magnetic coupling technology. It features four independent channels with unidirectional signal transmission and supports data rates up to 90 Mb/s. The device operates on a single power supply ranging from 2.7 V to 5.5 V. Key electrical specifications include an isolation voltage of 2500 Vrms, a propagation delay of 32 ns, and a typical rise/fall time of 3 ns. Operating supply current is specified at 31 mA or 57 mA depending on the channel configuration. The component functions within a temperature range of -40°C to +105°C and is housed in a 16-pin SOIC package.

Feature Summary

• Integrates high-speed CMOS logic with single-chip air-core transformer technology for magnetic signal coupling.
• Provides four independent bidirectional or unidirectional isolation channels within a compact surface-mount package.
• Eliminates design constraints associated with traditional optocouplers by removing the need for LED drivers and photodiodes.

Applications

• Isolation of SPI interfaces and data converters
• General-purpose multi-channel signal isolation
• Industrial fieldbus system isolation

Procurement Notes

Verify the specific suffix 'BRW' against official Analog Devices documentation to confirm pinout compatibility and functional directionality. Confirm RoHS compliance status as indicated in current manufacturer datasheets. Check for obsolescence notices or lifecycle changes prior to finalizing procurement plans.

Selection Notes

Select this component when four isolated channels are required for digital signal transmission. Ensure the application voltage falls within the 2.7 V to 5.5 V range. Verify that the 90 Mb/s data rate meets system requirements and that the unidirectional nature aligns with the circuit topology.

Part Context

This part belongs to the ADuM1400/ADuM1401/ADuM1402 family of quad-channel digital isolators. These devices share the core iCoupler architecture but differ in channel directionality and specific performance metrics. The BRW variant specifically denotes the commercial grade version in a 16-SOIC package.

Replacement Considerations

Consult official Analog Devices substitution guides for verified equivalents. Cross-reference pinouts and electrical characteristics carefully before replacing obsolete stock.