What the 150 Mbps and 5000 Vrms ratings mean for your isolation barrier
The ADUM240D0BRWZ is a 4-channel, unidirectional digital isolator from Analog Devices' iCoupler series, using magnetic coupling to transfer data across a reinforced 5000 Vrms isolation barrier. It supports a data rate of 150 Mbps with a propagation delay of 13 ns and pulse width distortion of 3 ns, making it suitable for isolating high-speed interfaces like SPI, CAN FD, or parallel buses where timing margin is tight. The wide supply range of 1.7V to 5.5V lets it bridge logic levels from 1.8V to 5V without an external level shifter, and its common-mode transient immunity of 75 kV/µs keeps data intact in noisy environments like motor drives or industrial inverters.
The wide-body SOIC provides the creepage distance needed to maintain the 5000 Vrms rating across the isolation barrier. No isolated power on-chip — the part is a pure signal isolator; you supply the rail on each side separately.