5000 Vrms isolation — the barrier spec that decides fit
The ADUM2402BRWZ is a 4-channel, unidirectional digital isolator from Analog Devices' iCoupler family, built around magnetic coupling technology. Its headline rating is 5000 Vrms isolation, which puts it in the reinforced-isolation class for applications that need a reliable galvanic barrier — think motor-drive control interfaces, industrial PLCs, medical equipment, and isolated power-supply feedback paths. The 10 Mbps data rate is fast enough for SPI, UART, and general-purpose logic-level isolation without introducing timing headaches; the 50 ns propagation delay and 3 ns pulse-width distortion keep signal integrity tight across the barrier.
At 10 Mbps, this part comfortably handles isolated SPI at 5 MHz clock or a full-speed UART at 1 Mbps with margin. The 2.5 ns rise/fall times are fast enough to keep edge rates predictable, but not so aggressive that they cause cross-talk problems on a well-laid-out board. Common-mode transient immunity of 25 kV/µs is the spec that matters when the isolator sits across a noisy switching barrier — in a variable-frequency drive or a solar inverter, that rating means the data link won't glitch when the power stage switches. The 2/2 input/output channel split (two channels on each side) gives flexibility for mixed-direction signals like SPI with chip-select and data lines.
The wide-body 16-SOIC package provides the creepage distance needed to sustain the 5000 Vrms rating in production.
Lifecycle and sourcing posture
ROHS3 compliant. For BOM planning, that means no supply-risk flag from obsolescence. If you need a second-source option, the iCoupler family includes pin-compatible siblings with different channel configurations and data rates — check the 4-channel unidirectional ADUM240x series for alternatives that match your speed and isolation needs.