SIGNAL- AND POWER-ISOLATED SURFACE-MOUNT RS-485/422 TRANSCEIVERS ELIMINATE EXTERNAL ISOLATED SUPPLY

- Analog Devices’ ADM2587E and ADM2582E integrated interface devices deliver signal and power isolation to 2.5 kV in small footprint for industrial-communications applications.
ADM2587E and ADM2582E integrated interface devices deliver signal and power isolation to 2.5 kV

Norwood, MA (03/03/2009) - Analog Devices, Inc. (ADI), a global leader in high-performance semiconductors for signal-processing applications, expands its interface product family with two integrated, galvanically-isolated RS-485/422 transceivers, each featuring an integrated isolated power converter. Providing unmatched levels of isolation performance, the ADM2587E and ADM2582E are the first transceivers to integrate a line driver, line receiver, oscillator, rectifier, regulator, and transformers into a single-chip that isolates both the data and power lines in a tiny 10 mm x 13 mm surface mount package. The transceiver’s SMT package improves manufacturability by allowing system OEMs to mount the device using automated production tools, reducing manufacturing steps, and improving mechanical performance. What’s more, the small footprint frees up circuit board space for other system functions. This highly integrated device also provides ±15 kV ESD protection on bus pins for a robust communications interface with isolated power for use in harsh industrial and instrumentation environments.

"Analog Devices’ ADM2587E is a great fit for our applications that need an isolated RS485 transceiver but are short on board space,” commented Gary Turner, senior design engineer for Lineage Power, a leading provider of reliable and innovative standard and custom power conversion solutions. “This transceiver significantly reduces our bill of materials for these circuits."

The ADM2587E and ADM2582E transceivers are the first RS-485/422 transceivers to feature both data-line and power isolation and incorporate ADI’s well known iCoupler ® and isoPower® isolation technologies in a tiny 10 mm x 13 mm WSOIC (wide body small outline integrated circuit) surface-mount package. With a 2.5-kV isolation rating, the new RS-485/422 transceiver complies with industry-standard isolation regulations, including UL1577 and DIN VDE 0884-10, ensuring it will meet the robustness levels required in noisy operating environments such as programmable logic controllers, distributed control systems, motor controls, building control systems, industrial fieldbus, and telecom equipment. The ADM2587E/ 82E transceiver’s SMT package will help to reduce time-to-market, accelerate the manufacturing process, and lower system development costs by reducing board space by as much as 84 percent and reducing component count by 83 percent compared with traditional ICs.

iCoupler® Technology
With more than 150 million channels deployed throughout the industry, ADI’s proven iCoupler technology is based on chip-scale transformers, rather than on the LEDs and photodiodes found in optocouplers. Transformers can support higher data rates and lower power consumption, and are more stable over life than LEDs and photodiodes. Fabricating the transformers directly on-chip, using wafer-level processing, integrates multiple iCoupler channels with other semiconductor functions at low cost. For more on ADI’s iCoupler digital isolation technology, please visit: http://www.analog.com/icoupler.

isoPower® DC-to-DC Converter
ADI’s isoPower dc-to-dc converter uses the same chip-scale transformer technology as iCoupler digital isolators. Instead of transmitting data, however, isoPower employs switches, rectifiers, and regulators to provide isolated power to the same safety levels as the data channels. For more on ADI’s technique for isolating power, please visit: http://www.analog.com/isopower.

Availability and Pricing
The ADM2587E and ADM2582E are available now for samples and come housed in a Pb-free 13 mm × 10.56 mm (138 mm2) 20-lead WSOIC (wide body small outline integrated circuit) surface-mount package. The ADM2587E transceiver is priced at $5.50 per unit and the ADM2582E is priced at $6.50 per unit in 1,000-unit quantities. For more information and to order evaluation boards, visit http://www.analog.com/pr/ADM2587E. For more information on ADI’s interface products, visit http://www.analog.com/interface.

About Analog Devices

Innovation, performance, and excellence are the cultural pillars on which Analog Devices has built one of the longest standing, highest growth companies within the technology sector. Acknowledged industry-wide as the world leader in data conversion and signal conditioning technology, Analog Devices serves over 60,000 customers, representing virtually all types of electronic equipment. Analog Devices is headquartered in Norwood, Massachusetts, with design and manufacturing facilities throughout the world. Analog Devices is included in the S&P 500 Index.

iCoupler is a registered trademark of Analog Devices, Inc. isoPower is a registered trademark of Analog Devices, Inc.

For more information on ADI's most recent product releases, visit our Press Release home page.

Editor's Contact Information:

Howard Wisniowski
781/937-1517

howard.wisniowski@analog.com

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