Six-channel iCoupler with 5000 Vrms isolation for industrial signal chains
The ADUM263N1BRIZ-RL is a 6-channel, unidirectional digital isolator from Analog Devices' iCoupler magnetic-coupling family. It delivers 150 Mbps per channel with 5000 Vrms isolation and a minimum common-mode transient immunity of 75 kV/µs, making it a strong fit for motor-drive feedback, isolated SPI/UART links, and medical equipment where galvanic isolation is required. Three channels run in each direction (Side 1 / Side 2: 3/3), so a full-duplex SPI bus plus a few control signals pass through one package.
150 Mbps and 13 ns propagation delay — timing budget for high-speed isolation
The 2.5 ns typical rise/fall time keeps the signal edges clean, but the PCB layout should keep the isolation barrier trace length short to avoid ringing. For designs that need to push data across a 5000 Vrms barrier at these rates, the ADUM263N1BRIZ-RL is a single-component solution that avoids the transformer-and-driver discrete approach.
75 kV/µs CMTI — why it matters for motor drives and inverters
The 75 kV/µs minimum common-mode transient immunity is the spec that separates this part from older isolators. In a motor-drive or solar-inverter application, the switching node can slam the isolation barrier with several hundred volts in a few nanoseconds. If the isolator's CMTI is too low, data errors or latch-up can occur. This rating ensures reliable operation in those high-dV/dt environments, which is why the ADUM263N1BRIZ-RL is often specified for industrial drives, EV chargers, and grid-tied power converters.
Package and temperature grade — design-in checklist
ROHS3 compliant per the listing.
For dual-sourcing resilience, the iCoupler family includes several 6-channel variants with similar pinouts — check the channel direction and isolation rating when selecting an alternate.