SPI isolator with dedicated channel mapping
The ADUM4150BRIZ-RL is a 6-channel SPI digital isolator from Analog Devices, part of the iCoupler® and SPIsolator™ families. It uses magnetic coupling to provide 5000 Vrms galvanic isolation across the barrier, with a 40 Mbps data rate that keeps up with most SPI peripherals. The channel arrangement is 4 on the primary side and 2 on the secondary side — a mapping that matches a standard SPI bus (SCLK, MOSI, MISO, SS) plus one extra signal, with two return channels for interrupts or acknowledgments. This is not a general-purpose isolator; it is built for SPI-specific isolation where the channel count and direction are fixed.
The 5000 Vrms isolation voltage qualifies the part for reinforced insulation in motor drives, industrial power supplies, and medical equipment.