Four-channel iCoupler for signal isolation without the opto headaches
The ADUM1442ARQZ-RL7 is a 4-channel digital isolator from Analog Devices' iCoupler series, using magnetic coupling to pass signals across a 2500Vrms isolation barrier. It gives you two channels going each way — 2 inputs on side 1, 2 on side 2 — so a full-duplex SPI or a pair of UART signals fit without extra parts. Data rate is 2Mbps, which covers most industrial comms like RS-485 or CAN transceiver isolation. Propagation delay maxes at 180 ns each way, predictable and consistent, unlike the aging drift you get with optocouplers. Supply range is 2.25V to 3.6V, so it plays nice with 3.3V and 2.5V logic domains.
Temperature range and package — field-swap friendly
Surface-mount only, so plan for the reflow profile. ROHS3 compliant, no lead concerns for EU shipments.
Lifecycle — no end-of-line panic
ADI lists the ADUM1442ARQZ-RL7 as Active. The iCoupler platform has been around for years, so second-sourcing is straightforward if you need to dual-source.
Sourcing — quoted to order, no stock games
We source the ADUM1442ARQZ-RL7 through independent distribution channels.