Automotive-grade isolation for the 125°C bus
The ADUM3200WBRZ is an automotive-grade digital isolator from the iCoupler family, rated for 2500 Vrms isolation with a data rate of 10 Mbps. Its operating temperature range spans -40°C to 125°C, which covers the full under-hood and engine-bay ambient for most passenger and commercial vehicles. The two unidirectional channels are configured 2/0, meaning both channels run from Side 1 to Side 2 — a common arrangement for isolating a pair of digital control signals from a noisy field side. The 25 kV/µs minimum common-mode transient immunity ensures the output does not glitch when a motor drive or solenoid switches at high dv/dt.
Supply range and propagation timing
Propagation delay is 50 ns max with a 3 ns max pulse-width distortion, so the part preserves the duty cycle of a PWM signal or a serial data stream at up to 10 Mbps. Rise and fall times are 2.5 ns typical, which keeps the output edge rate fast enough for a 10 Mbps SPI or UART link without excessive ringing into a 15 pF load.
Active lifecycle and compliance position
For new designs targeting automotive qualification, this part is a first-choice candidate rather than a legacy holdover.