25 Mbps isolation with 2500 Vrms — the field-service view
The ADUM1200WURZ-RL7 is a 2-channel, unidirectional digital isolator from Analog Devices' iCoupler family, using magnetic coupling to pass signals across a 2500 Vrms isolation barrier at up to 25 Mbps.
Data rate and timing — what 25 Mbps buys you
At 25 Mbps, this part handles SPI clocks up to 12.5 MHz (DDR) or full UART rates without bit errors. Propagation delay is 50 ns max in both directions, and pulse-width distortion stays under 3 ns — tight enough for most sensor interfaces and control signals in motor drives or battery management systems. Rise and fall times are 2.5 ns typical, which keeps signal integrity clean over short PCB traces but may need series termination if the line runs more than a few inches.
Noise immunity: 25 kV/µs CMTI
In an inverter drive or DC-DC converter, that means the isolator won't glitch when the ground plane jumps — a common failure point in cheaper optocouplers. The magnetic coupling technology inherently handles fast transients better than opto, and this part's CMTI spec backs that up.
Supply range and power
No isolated power on chip — you still need a separate DC-DC or isolated module for the secondary-side supply.
Housed in an 8-SOIC (3.90 mm body width) — a common footprint that fits standard rework tools. The W suffix indicates the wide-body package, which gives the creepage distance needed for 2500 Vrms. Surface-mount only, so plan for a reflow profile; no socket option.
ADI lists this part as Active.