isoSPI Isolators

Linear Technology’s Isolated Transceivers provide robust galvanic isolation for various digital serial communication interfaces and devices, including SPI, I2C, RS485/RS422, RS232, USB, CAN, data converters and switches.  Isolation barriers are implemented using either inexpensive Ethernet transformers, coupling capacitors or embedded inductors.  All devices are simple to configure and feature very low EMI susceptibility and emissions, as well as high noise immunity, to preserve signal integrity.

For robust isolated communication across long cable lengths, Linear Technology’s isoSPI™ interface translates bidirectional SPI across an isolated barrier of up to 100 meters using twisted pair wire and a simple pulse transformer. Designed for high voltage and high noise systems, isoSPI provides safe and robust information transfer up to 1MHz.