What this iCoupler isolator does on the board
The Analog Devices ADUM3200ARZ-RL7 is a two-channel, unidirectional digital isolator from the iCoupler family, built around magnetic coupling technology. It provides galvanic isolation rated at 2500Vrms between input and output sides, with a data rate of 1Mbps.
Two channels, one direction — what the 2/0 input count means
The channel configuration shows two inputs on Side 1 and zero on Side 2, meaning both channels pass data from the left (primary) side to the right (secondary) side only. This unidirectional architecture suits applications like isolated digital input capture, status feedback, or control signals where reverse communication is handled by a separate part. The propagation delay is 150ns max, with pulse-width distortion held to 40ns max, which keeps signal integrity clean for 1Mbps data streams.
Common-mode transient immunity and isolation margin
Minimum common-mode transient immunity (CMTI) is 25kV/µs, which means the isolator rejects fast voltage transients between grounds — a key parameter for motor-drive inverter phases or industrial environments with heavy switching noise. The 2500Vrms isolation rating is a one-minute withstand voltage; for reinforced insulation applications, check the system-level creepage and clearance requirements against the 8-SOIC package dimensions.