Isolation barrier and channel architecture
The ADUM2401ARWZ is a 4-channel, unidirectional digital isolator from the iCoupler series, built around magnetic coupling technology. It provides 5000 Vrms isolation between input and output sides, with a 3/1 input-side-to-output-side channel count — three channels forward, one reverse. The rated common-mode transient immunity of 25 kV/µs (minimum) means the part maintains data integrity across the barrier during fast voltage transients, a common requirement in motor-drive and inverter stages where high-side switching generates kilovolt-per-microsecond edges.
The 1 Mbps maximum data rate suits general-purpose isolation of slow serial interfaces (UART, SPI at lower clock rates, GPIO status lines) and sensor outputs. Propagation delay is 100 ns max in either direction, so the part adds about 200 ns of round-trip latency — negligible for most control loops but worth budgeting if the system closes a fast current loop through the isolator. Pulse-width distortion is 40 ns max, which matters for duty-cycle-sensitive signals like PWM gate drives. The 2.5 ns typical rise/fall time keeps edge rates clean without excessive ringing.
Package and physical fit
Housed in a 16-pin SOIC wide-body (0.295-inch body width, 7.50 mm), surface-mount. The wide-body SOIC provides the creepage distance needed to sustain the 5000 Vrms rating — standard SOIC-8 or narrow SOIC-16 would not pass the same isolation voltage. No isolated power output on this variant; the ADUM2401ARWZ is a pure signal isolator.
Lifecycle and sourcing
Listed as Active in production, ROHS3 compliant.