5000 Vrms isolation — the spec that decides the BOM
The ADUM240E1BRWZ-RL is a 4-channel, unidirectional digital isolator from Analog Devices' iCoupler® family, built with magnetic coupling technology. The 150 Mbps data rate with 2.5 ns typical rise/fall time and 13 ns max propagation delay keeps timing closure manageable for most serial buses.
75 kV/µs CMTI — why it matters for switching environments
Common-mode transient immunity is rated at 75 kV/µs minimum. In a motor-drive or inverter stage where IGBTs switch at tens of kV/µs, this rating means the isolator won't latch or corrupt data from the common-mode voltage step. The 3 ns max pulse-width distortion keeps the duty cycle intact across the isolation barrier — important for PWM signals or clock recovery.
Temperature grade and package — deployment context
Surface-mount assembly is standard; no isolated power is integrated, so the secondary side needs its own supply rail.
Lifecycle and sourcing posture
For dual-sourcing resilience, the ADUM140D1BRZ-RL7 offers the same channel count and data rate at 3750 Vrms isolation — a drop-in for designs that can accept the lower isolation voltage.