Automotive-grade galvanic isolator for harsh environments
The ADUM241E1WBRWZ-RL is a 4-channel, unidirectional digital isolator from Analog Devices' iCoupler family, built with magnetic coupling technology. The 5000 Vrms isolation rating provides a robust safety barrier for systems that must withstand high-voltage transients — think traction inverter gate-drive interfaces, battery management system SPI isolation, or CAN-FD / Ethernet isolation in an ECU.
Package and mounting
At 150 Mbps, this isolator keeps up with high-speed serial protocols like SPI at 50 MHz clock or full-speed Ethernet without adding a bottleneck. The 2.5 ns typical rise/fall time and 13 ns max propagation delay leave enough timing margin for most isolation barriers. The 75 kV/µs minimum common-mode transient immunity is the spec that matters in motor-drive and inverter environments: fast-switching SiC or IGBT stages can dump several kV/µs across the barrier, and this part holds its output state through that noise. Pulse-width distortion is held to 3 ns max, so duty-cycle-sensitive signals like PWM or Manchester-encoded data stay clean.
Channel configuration and supply flexibility
The 3/1 channel split (three forward, one reverse) maps directly to a typical SPI isolation pattern: MOSI, SCLK, and chip-select going out, with MISO coming back. No isolated DC-DC converter is integrated, so you will need a separate isolated power supply for the secondary side — a common trade-off that keeps the package in a standard 16-SOIC wide-body footprint.