This application note is a selection guide for various SPI isolation solutions and also discusses various SPI isolation techniques to help designers facing system level challenges such as high communication speeds, limited PCB area, and low power consumption.
This application note from Analog Devices discusses the serial peripheral interface (SPI) as a synchronous serial bus interface for short communication between microprocessor and peripheral devices, and how it can be implemented in various ways. One such implementation occurs when the need or benefit to include galvanic isolation arises. Various SPI isolation techniques can help designers facing distinct system level challenges, such as high communication speeds, limited printed circuit board (PCB) area, and low power consumption. In this article, you can learn more about maximizing clock speed, including standard three forward channel, one reverse channel 3/1 digital isolators, independent delayed clock (wrapped clock) and delayed readback isolator, as well as integrated isolated power and auxiliary data channels. You can also explore a selection guide for various SPI isolation solutions.