5000Vrms isolation in a 16-SOIC — what it buys you
The ADUM2400ARIZ is a four-channel, unidirectional digital isolator from Analog Devices' iCoupler series, built with magnetic coupling technology. It delivers 5000Vrms isolation in a wide-body 16-SOIC package — enough to meet reinforced isolation requirements for medical equipment, industrial motor drives, and grid-tied power converters. The 1Mbps data rate handles UART, SPI (at lower clock rates), and general-purpose logic-level isolation.
Both sides operate from 2.7V to 5.5V, so you can directly interface a 3.3V microcontroller on one side and a 5V sensor or actuator on the other without an external level translator. The unidirectional channel arrangement — all four inputs on side 1, all outputs on side 2 — is straightforward for isolating a single-direction data bus.
Propagation delay and transient immunity
Maximum propagation delay is 100ns in both directions, with pulse-width distortion held to 40ns max. Rise and fall times are 2.5ns typical, keeping edges clean for the 1Mbps data rate.
Temperature range and rework considerations
The wide-body SOIC-16 is a rework-friendly package — visible leads, easy to inspect solder joints, and no hidden thermal pad that needs a via stitch.