The ADUM141E1BRZ is a 4-channel, unidirectional digital isolator from Analog Devices' iCoupler family, using magnetic coupling to transfer signals across a 3000Vrms isolation barrier. It is a general-purpose part — no integrated DC-DC converter — sized for isolating SPI, UART, GPIO, or PWM lines in industrial fieldbus, motor-drive feedback, and isolated sensor interfaces. The 150 Mbps data rate keeps propagation delay to 13 ns max (each direction), with 2.5 ns typical rise/fall and 3 ns pulse-width distortion, so it handles high-speed clock and data links without skew eating into your timing budget. The 75 kV/µs common-mode transient immunity (CMTI) is the spec that matters when you are isolating a controller from a noisy inverter phase leg or a switching power stage — it means the output does not glitch when the ground plane jumps several hundred volts in a microsecond.
Supply, temperature, and package — fit for industrial and automotive environments
Package is a standard 16-pin SOIC with 3.90 mm body width, footprint-compatible with many older 16-SOIC isolators. No isolated power on chip — you supply the secondary-side rail externally or add a separate isolated DC-DC module.
For a production BOM, that means no last-time-buy math needed and no forced redesign window.
Channel-directional layout — 3/1 input split
Three channels are configured as Side-1 inputs / Side-2 outputs, one channel is Side-2 input / Side-1 output. That 3/1 split fits the typical isolated SPI or UART link: three lines from controller to peripheral (SCLK, MOSI, CS) plus one return line (MISO) back to the controller. If your application needs a different direction balance — say 2/2 for two bidirectional data pairs — the ADUM142D1BRQZ or ADUM142E0BRZ in the same iCoupler family offer that, with identical speed and isolation ratings.