What this five-channel iCoupler does on the board
The ADUM151N0BRZ-RL7 is a 5-channel, unidirectional digital isolator from Analog Devices' iCoupler series, built with magnetic coupling technology. It isolates five digital signals across a 3000 Vrms barrier while passing data at up to 150 Mbps — fast enough for SPI buses, CAN transceiver isolation, or parallel control lines without adding a clock cycle of latency. The channel assignment is 4 on side 1, 1 on side 2, so it fits designs that need most of the isolation on one domain with a single feedback or status line coming back.
150 Mbps and 75 kV/µs CMTI — where the margin matters
The 150 Mbps data rate and 13 ns propagation delay (max, both directions) mean this part keeps up with high-speed serial interfaces without adding skew. Pulse-width distortion is held to 4.5 ns max. The 75 kV/µs common-mode transient immunity is the spec that matters in motor drives, solar inverters, and any environment where fast-switching power stages slam the ground reference.
ROHS3 compliant, no isolated power converter on-chip — you supply the secondary-side rail separately.