The ADUM5202ARWZ is a two-channel digital isolator from Analog Devices' IsoPower and iCoupler families. It uses magnetic coupling to transfer digital signals across a 2500Vrms isolation barrier, and it also integrates an isolated DC-DC converter on-chip — meaning you get signal isolation plus a secondary-side power rail from a single 16-SOIC package. That combination saves board space and simplifies the BOM in designs where you need to power isolated side circuitry without a separate isolated module.
The 2500Vrms isolation rating covers basic functional isolation for industrial equipment, motor drives, and medical non-patient-contact applications. If your design requires reinforced isolation or a higher working voltage, you would step up to the 5000Vrms-rated siblings like the ADUM6402ARWZ or ADUM6403ARWZ — but those come with four channels and a larger package. The 1 Mbps data rate is enough for SPI, UART, and general-purpose GPIO isolation at moderate speeds. Rise and fall times are a tight 2.5 ns typical, so signal integrity on the bus stays clean even at the full rate. Propagation delay is 100 ns max — a budget you need to account for in timing-closure calculations, especially if the isolator sits in a feedback loop or a synchronous interface. The common-mode transient immunity of 25 kV/µs means it will not glitch during fast voltage swings on the bus, which matters in motor-drive or inverter environments where the ground reference jumps.
Where it goes and what it powers
The ADUM5202ARWZ is a general-purpose isolator — it fits into any application where you need to pass digital signals across a safety barrier while also supplying isolated power to the secondary side.