Isolated Interface

Analog Devices’ family of isolated I²C isolators support a complete isolated I²C interface. This portfolio is based on our iCoupler^® chip scale transformer technology. iCoupler is a magnetic isolation technology with functional, performance, size, and power consumption advantages compared to optocouplers. By integrating iCoupler channels with semiconductor circuitry, our technology enables a complete, isolated I²C interface with a small form factor. Our I²C isolators covers applications such as central office switching, networking, and power over Ethernet.

Isolated LVDS (low voltage differential signaling) devices couple differential signals applied to the LVDS receiver inputs across the isolation barrier to the outputs on the other side and re-transmits the bit stream or clock as LVDS. Analog Devices' drop-in LVDS isolators offer designers robust, high speed differential signaling for point-to-point and multidrop applications. Extending iCoupler^® chip scale transformer technology for ultrahigh speed data encoding, these LVDS isolators support a a data rate of up to 2.5 Gigabits per channel for a total bandwidth of 10 Gbps. In contrast to expensive fiber implementations, deserialized links over standard digital isolators or optocouplers, and design-intensive bespoke solutions using transformers or high voltage capacitors, ADI Gigabit Digital LVDS isolators offer the only integrated comprehensive, high performance isolation at 10 Gbps. High performance galvanic isolation for applications include analog front-end (AFE), processor to processor serial communication, or video and imaging data (such as HDMI isolators) as well as isolation between boards, or at a cable interface for LVDS or CML signal chains.

SPI (Serial peripheral interface) is one of the most widely used interfaces between microcontrollers and peripheral ICs such as sensors, ADCs, DACs, shift registers, SRAM, and others. Analog Devices has your isolated SPI bus covered with our dedicated SPI digital isolators which support this synchronous, full duplex master-slave-based interface. Options include devices built with ADI's proven iCoupler® technology and offering a small footprint, simple design-in, fast speeds, and high data integrity, as well as integrated µModules which require no external components. Our SPI isolator solutions increase performance and reduce board space. This simple, compact solution is ideal for isolated SPI data requiring communication across different ground potentials or through large common mode transients often found in Industrial PLCs (programmable logic controllers) and Instrumentation and data acquisition systems.

USB isolators protect the communication interface between the host, such as a PC, and its peripheral. Utilizing iCoupler® digital isolation technology, Analog Devices offers USB 2.0 compliant SOIC components with data rates up to 12 Mbps that provide EMC protection and safety isolation, reduce design size and time, and lower system cost. Galvanically isolated USB μModule® (micromodule) transceivers integrate the USB interface with an isolated dc-to-dc converter for up to 2.5 W of isolated power and provide ±15 kV ESD. Whether for host, hub, bus splitter, or peripheral device, these transparent USB digital isolators are easy to use—they just work—all while meeting the demanding standards required for medical and industrial applications.