The ADUM142E1WBRWZ is a 4-channel, unidirectional digital isolator from Analog Devices built around iCoupler magnetic coupling technology. It is specifically configured for SPI isolation: two channels on side 1 drive the clock and data lines, and two on side 2 handle the return data and chip-select, matching the typical SPI signal set without wasting channels. The 150 Mbps data rate and 13 ns typical propagation delay leave comfortable timing margin for SPI buses running at 20 MHz or faster, even when the isolation barrier adds a few nanoseconds of skew.
Automotive-grade isolation — 100 kV/µs CMTI and 3000 Vrms
Rated for 3000 Vrms isolation and a minimum common-mode transient immunity of 100 kV/µs, this part is designed to hold its data integrity through fast-switching transients from motor drives, inverters, and DC-DC converters.
No isolated power converter is integrated — the part is a signal-only isolator, and each side needs its own local supply rail.