ADI claims first fully isolated industrial CAN transceivers

adiicouplercantransceiverNorwood, Mass. — Analog Devices, Inc. has unveiled two transceivers that the company claims are the first to isolate both data signals and power for systems using the control-area network (CAN) communications bus, aimed at industrial and instrumentation applications.

The ADM3052 and ADM3053 use ADI’s iCoupler digital isolation technology. The ADM3053 also includes an isoPower integrated, isolated dc-to-dc converter, reducing component count by up to 80 percent compared to competing alternatives, and consuming 70 percent less board space than discrete competitive options.

Watch a video on the ADM3052 and ADM3053 CAN transceivers.

“CAN was originally developed for the automotive industry, but has become widely adopted in industrial and instrumentation systems, including factory automation, building controls, wind turbines, and elevators, in which communication with and management of multiple sub-systems is essential,” said Mike Britchfield, vice president, Industrial and Instrumentation Group, Analog Devices, in a statement. “Targeted specifically for the industrial and instrumentation market, the ADM3052 and ADM3053 are the first transceivers to combine signal and power isolation in a single device for Devicenet, CANOpen, and other CAN-based communications applications.”

The ADM3052 CAN transceiver offers 5-kVrms isolation between a 4-wire CAN-bus configuration and a precision analog microcontroller or digital signal processor (DSP), while providing the physical layer properties required by the CAN-bus specification, said ADI. The 4-wire CAN-bus configuration includes two data lines, 24-V power supply, and the power supply current return path.

The ADM3052 integrates a 24-V low-dropout regulator (LDO), three channels of ADI’s iCoupler digital signal isolation technology and the physical layer CAN transceiver. The ADM3052 also integrates protection against wiring faults, and a bus power-sense function, which provides an isolated signal to the precision analog microcontroller or DSP to indicate whether the 24-V bus power supply is present or not, said ADI.

The ADM3053 CAN transceiver provides 2.5-kVrms isolation between a 2-wire CAN-bus configuration and a precision analog microcontroller or DSP. The 2-wire CAN-bus configuration includes only the two data lines, with bus-side power provided by ADI’s proprietary isoPower dc-to-dc converter technology from the precision analog microcontroller or DSP side of the isolation barrier. The ADM3053 includes an oscillator, rectifier, regulator, two channels of iCoupler digital signal isolation technology and the physical CAN transceiver with integrated wire-fault protection.

The ADM3052 and ADM3053 CAN transceivers, available in small, surface-mountable, wide-body SOIC packages, are pending safety and regulatory isolation standards certification by Underwriters Laboratories (UL) and Verband der Elektrotechnik(VDE).

Availability: Samples are available now.
Pricing: The ADM3052, available in 10 x 10 mm or 16-lead wide-body SOIC, is priced at $3.00 each in quantities of 1,000. The ADM3053, available in 10 x 13 mm or 20-lead wide-body SOIC, is priced at $5.50 each in quantities of 1,000.
Resources:ADM3052 datasheet/ordering and ADM3053 data sheet/ordering.