Two-channel unidirectional isolator with 5 kVrms barrier
The ADUM2200ARWZ-RL is a two-channel, unidirectional digital isolator from Analog Devices' iCoupler family, built around magnetic coupling technology. The inputs are all on side 1 (2/0 configuration), making it a straight drop-in for isolating a single-direction signal pair — think SPI clock and data lines, or a UART TX/RX pair where the return path is handled separately.
1 Mbps data rate — what it covers
At 1 Mbps this part is sized for control and status signals, not high-speed data buses. It fits RS-232, I²C (standard and fast mode), low-speed SPI, and general-purpose GPIO isolation. The 150 ns max propagation delay per channel and 40 ns pulse-width distortion mean timing skew stays tight enough for most sensor readback and relay-driver applications. If you need 10 Mbps or faster, the ADUM2401ARWZ-RL in the same package steps up to 100 ns propagation delay and 2.5 ns rise/fall times.
25 kV/µs CMTI — why it matters on a motor drive
Common-mode transient immunity of 25 kV/µs is the spec that keeps the data intact when a power stage switches a few hundred volts in nanoseconds. In a variable-frequency motor drive or an inverter-fed pump, the isolation barrier sees fast voltage slewing from the IGBT or SiC switching node. If the isolator's CMTI is too low, the output glitches and the controller sees a false edge. This part's 25 kV/µs rating handles that environment without needing external filtering.
Package and temperature grade
Housed in a 16-pin SOIC wide-body (7.50 mm body width), the same footprint used across the ADUM2200 family. The wide SOIC gives better creepage distance than the narrow-body 8-pin isolators, which matters when you need to hold 5000 Vrms reinforced insulation.
Lifecycle and supply posture
For dual-sourcing resilience, the ADUM2211SRIZ is a pin-compatible two-channel isolator with a 1/1 input configuration and extended 125°C temperature rating, though it shifts one channel to side 2.