Electronics & Computers

ADI Unveils New Low-Power Digital Isolators

November 14, 2013

The ADuM144x family of iCouplers promises to reduce power by a factor of 1,000 compared with optocouplers to improve energy efficiency.

NORWOOD, MA /BUSINESS WIRE/ -- Analog Devices (ADI) introduced the ADuM144x family, the "industry's lowest power digital isolators." Based on ADI's proprietary iCoupler technology, the ADuM144x can be powered by as little as 1 µW of power, delivering power levels "over 1,000 times lower than optocouplers and competing digital isolators." At these levels the ADuM144x family is ideally suited for industrial and instrumentation systems such as 4–20 mA current loops, remote sensors, and green systems that demand high energy efficiency or depend on limited power sources, such as batteries. Watch this video to learn more about the ADuM144x low-power digital isolators.

  • Order ADuM144x samples and download data sheets and other technical documents online.
  • Get digital isolator–related questions answered by ADI engineers on the EngineerZone, ADI's online technical support community.
  • Catalog Distributors Digi-Key Corp and Mouser Electronics are stocking inventory of both silicon and evaluation boards.

The ADuM144x are quad-channel data isolators available in three different channel configurations with a one-minute isolation safety rating of 2.5 kV rms. They have an operating voltage range of from 2.25 V to 3.6 V, further reducing power constraints and providing the "lowest isolator operating voltage on the market." Quiescent power supply current at 2.5 V is less than 5 µA per channel, and power supply current at 2 Mbps is less than 380 µA per channel. A power saving mode can reduce current levels to as little as 0.1 ?A per channel, resulting in an "industry-best 1 µW of total power for the entire isolator." In addition to the significant power savings, the ADuM144x is also available in a 16-lead QSOP package, making it the "industry's smallest quad-channel digital isolators with a 2.5 kV rms isolation rating."

"The ADuM144x is a natural extension of our iCoupler digital isolator product family, which includes the highest performance, most reliable isolators on the market. With the industry's increased focus on energy efficiency, we recognized that our core iCoupler technology was the only isolation technology on the market capable of achieving such low power levels. We worked with customers to define this breakthrough product family and enhance our capabilities to serve their system needs," said David Krakauer, Product Line Manager of Analog Devices' isolation and interface product line.

The ADuM144x family employs the same iCoupler chip-scale transformer technology used in ADI's full line of safety isolation products and used in the more than 1 billion channels of isolation shipped in over 10 years. The ADuM144x in the 16-lead QSOP package is in production and available today, with versions in different packages, channel counts, and higher isolation ratings forthcoming.

Pricing and Availability

Product Availability Price (1K units) Package
ADuM144xARQZ Now $1.98 4 mm by 5 mm, 16-lead QSOP
ADuM144xARSZ January 2014 $2.48 7.2 mm by 5.3 mm, 20-lead SSOP
Eval Board Now $49.00  

About ADI
Innovation, performance, and excellence are the cultural pillars on which Analog Devices (ADI) 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, MA, with design and manufacturing facilities throughout the world. Follow ADI on Twitter.

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