ADuM3151 SPIsolator™ Digital Isolators

Analog Devices Inc. ADuM3151 SPIsolator™ Digital Isolators are 7-channel, dedicated 3.75kV_rms digital isolators optimized for isolated serial peripheral interfaces (SPIs) with 2/1 aux channel directionality. These isolators employ iCoupler^® chip-scale transformer technology that provides low propagation delay in the CLK, MO/SI, MI/SO, and SS SPI bus signals and support SPI clock rates of up to 17MHz. These channels operate with a 14ns propagation delay and 1ns jitter to optimize timing for SPI. The ADuM3151 isolators also provide two additional independent low data rate isolation channels, one channel in each direction. Data in the slow channels are sampled and serialized for a 250kbps data rate with 2.5μs of jitter.