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ADI Introduces New Line Of Isolated Error Amplifiers (Graphic: 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.

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. http://www.analog.com

EngineerZone is a registered trademark of Analog Devices, Inc.

To subscribe to ADI’s News Feed: http://www.analog.com/en/homepage/news.xml

Follow ADI on Twitter: http://www.twitter.com/ADI_News

Subscribe to Analog Dialogue, ADI’s monthly technical journal: http://www.analog.com/library/analogDialogue/

Photos/Multimedia Gallery Available: http://www.businesswire.com/multimedia/home/20130225005016/en/

Copyright Business Wire 2010

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