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Press release from Business Wire

Isolated Error Amplifiers Outperform Optocouplers and Shunt Regulators in Power Supply Applications

Tuesday, February 26, 2013

Isolated Error Amplifiers Outperform Optocouplers and Shunt Regulators in Power Supply Applications02:00 EST Tuesday, February 26, 2013 NORWOOD, Mass. (Business Wire) -- Analog Devices, Inc. (NASDAQ: ADI), a global leader in high-performance semiconductors for signal-processing applications and a pioneer in digital isolator technology, today introduced isolated error amplifiers that provide power supply designers with a higher performing, single-chip alternative to isolation techniques based on optocouplers and shunt regulators. Designed for linear feedback power supplies using primary side controllers, the ADuM3190 and ADuM4190 isolated error amplifiers have a 400-kHz bandwidth, with 0.5% typical initial accuracy at 25°C and 1% total accuracy over the extended temperature range of –40˚C to +125˚C. This provides manufacturers of ac-to-dc and dc-to-dc power supplies, including those that are DOSA (Distributed-power Open Standards Alliance)-compliant, with a significant upgrade in speed and operating temperature range, as well as a 5× improvement in transient response. View product pages, download data sheets and order samples: and View discussions and FAQs on Analog Devices' interface and isolation products on EngineerZone™, an online technical support community: Designed with ADI's iCoupler® digital isolation technology, the ADuM3190 and ADuM4190 eliminate the CTR (current-transfer ratio) of optocouplers that degrades over the lifetime of the devices and limits operation to 85˚C. The ADuM3190 and ADuM4190 include a highly accurate 1.225-V reference and a wideband operational amplifier that can be used to set up a variety of commonly used power supply loop compensation techniques. ADuM3190/4190 Isolated Error Amplifiers Key Features Bandwidth: 400 kHz 0.5% initial accuracy at 25°C 1% total accuracy over –40˚C to +125˚C Low power operation: <7 mA Isolation voltage: ADuM3190: 2.5 kV rms ADuM4190: 5 kV rms (reinforced) Pricing and Availability Product     Availability     Price at 1KQuantity     Package     TemperatureRange (°C) ADuM3190A     Now     $1.04     QSOP-16     –40 to +85 ADuM3190B     Now     $1.12     QSOP-16     –40 to +85 ADuM3190S     Now     $1.14     QSOP-16     –40 to +125 ADuM3190T     Now     $1.23     QSOP-16     –40 to +125 ADuM4190A     April '13     $1.20     Wide-body SO-16     –40 to +85 ADuM4190B     April '13     $1.28     Wide-body SO-16     –40 to +85 ADuM4190S     April '13     $1.30     Wide-body SO-16     –40 to +125 ADuM4190T     April '13     $1.39     Wide-body SO-16     –40 to +125 EVAL-ADUM3190EBZ     Now     $49 per     -     - 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. EngineerZone is a registered trademark of Analog Devices, Inc. To subscribe to ADI's News Feed: Follow ADI on Twitter: Subscribe to Analog Dialogue, ADI's monthly technical journal: Photos/Multimedia Gallery Available: Devices, Inc.Joe Dussi, 781-937-1216joe.dussi@analog.comorPorter NovelliAndrew MacLellan,