Four-channel isolator for high-speed industrial links
The ADUM141D1BRWZ-RL is a 4-channel, unidirectional digital isolator from Analog Devices' iCoupler series, built on magnetic coupling technology. It delivers 150 Mbps per channel with 13 ns propagation delay and 3 ns pulse-width distortion, giving you clean timing margin for SPI, UART, or parallel bus isolation. Three channels run from Side 1 to Side 2, one channel runs the opposite direction — a 3/1 input split that suits mixed-direction interfaces like SPI with a separate MISO line.
Rated at 3750 Vrms for 1 minute per the basic/reinforced insulation standard, this part handles the isolation barrier in motor drives, industrial PSUs, PLC I/O modules, and medical equipment where patient-contact isolation is not required. The 75 kV/µs common-mode transient immunity keeps data intact when a SiC or IGBT switch transitions at several kV/µs — a spec that matters more than the headline isolation voltage in high-dV/dt environments.
Supply flexibility and temperature grade
No isolated DC-DC converter is integrated — plan for a separate isolated supply on the secondary side.
Package and footprint
Housed in a 16-pin SOIC with 7.50 mm body width (0.295" wide), the same footprint as the ADUM1400/ADUM1401 family. The wide-body SOIC gives 8 mm creepage distance, enough for basic isolation at 300 V working voltage per IEC 60950. Surface-mount only; no through-hole option.