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西门子在采用ADI公司的数字隔离技术
发表于 2008-9-2 9:07:37
ADI公司的iCoupler?技术不但能够替代耦合器的1/10，并且对于未来产品具有可升级性，能够实现多个隔离通道或隔离通道与其它半导体器件功能的集成。
    ADI公司精密数据转换器产品线总监Pat O'Doherty说：“过程控制和工业自动化正日益依赖高性能模拟技术在数据采集和系统监控中的应用。我们视这种数字隔离技术为一种能给我们的工业客户带来显著附加优势的关键技术。西门子公司采用ADuM1100产品是对ADI公司iCoupler?技术在工业应用中的价值的一种有力说明。”
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采用isoPower技术的iCoupler产品：利用微型变压器隔离信号和电源
发表于 2008-8-20 17:25:40

引言

出于安全和数据完整性考虑,通常需要在电路元件之间进行隔离。例如,隔离可以保护系统端敏感的电路元件和人界面免受现场端存在的危险电压的损害,现场端驻留比较鲁棒性的元件,例如传感器和执行机构。隔离还可以消除影响数据采集精度的共模噪声和接地环路问题干扰。虽然可以采用传统的光耦合器或ADI公司的iCoupler隔离器完成通过隔离阻障的数据传送,但是主要的挑战和共同难题是找到一种将电源从非隔离的系统端传送到被隔离的现场端的方法。本文讨论了通过采用ADI公司最新的iCoupler产品——集成的电源隔离和数据信号隔离新方法解决这个难题的技术背景。

迄今为止,经过隔离阻障传送电源一般需要两种方法,一种方法是分立的DC/DC变换器,其尺寸相当大、成本高而且隔离度不够;另一种方法是定制的分立方法,它不仅体积大而且难于设计和连接。这两种方法已是唯一可行的替代方法,即使是在只需要低隔离电源(例如数据采集模块)的应用场合。

ADI公司最近推出了一种完整而且完全集成的隔离解决方案——采用微型变压器经过隔离阻障传送信号和电源,解决了上述问题。我们将iCoupler技术的扩展称为isoPower技术,是又一种创新的解决方案。在一颗单芯片内提供信号和电源隔离功能,无需体积大、成本高、难设计的隔离电源,并且提供了高达5 kV足够的隔离度。它可以显著降低隔离系统的总成本、印制电路板(PCB)面积和设计时间。一种采用isoPower技术的双通道iCoupler器件如图1所示,其面积缩小90%,成本降低70%。

www.adum.com.cn

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比尔离开微软的最后一段话
发表于 2008-7-9 8:31:55
I want to share some thoughts on my last day as a full-time Microsoft employee.
For the last 33 years, I've had the ideal job. It's been incredibly exciting to come here every day to work with the smartest people in the world to develop breakthrough software. Together, we have built a great company that has profoundly changed the world for the better.
After today, I will be shifting my full-time focus to the work of the Bill and Melinda Gates Foundation while keeping a strong connection to Microsoft.
The fact that I am making a career change does not mean that our work at Microsoft is done. In fact, the most exciting impact of our software is still ahead of us. Everything we have done up to now is just the foundation for the more dramatic breakthroughs to come. As you apply the magic of software to delivering a new generation of innovations, this company will continue to transform the way people communicate, create, and share experiences.
Microsoft is in an incredible position because we have momentum and a great pipeline of products and technologies. Even more important, we have great people at every level. In research and development we have great engineers focused on solving the most pressing challenges in computer science and turning new ideas into innovative products. In marketing, sales, and customer service, our world-class organizations keep getting better.
We also have strong leadership. As Microsoft has grown, one of the most exciting and fulfilling things for me has been to watch new leaders develop.
It starts at the very top. For the last 28 years, I have loved working side by side with Steve. Even now after all these years I am regularly impressed with his energy and insight. I think he and I have enjoyed one of the great business partnerships of all time. Steve has done a great job leading the company since he became CEO in 2000. Steve's passion for democratizing the power of technology and inspiring customers, partners, and employees will keep us driving ahead.
I am thrilled to have Ray and Craig playing key roles in guiding the company's strategy. For over a decade I had hoped that we could convince Ray to join Microsoft—and in the three years he has been here, he has made a huge difference in helping us focus on the challenge and opportunity of software plus services. I have worked with Craig for more than 15 years. His ability to anticipate the future direction of technology is a key asset, as is his deep interest in and understanding of emerging markets.
 Of course, I'll continue to be involved in the work of the company as part-time Chairman. As part of this I will help with a handful of projects that Steve, Ray, and Craig select.
 As I reflect on the last three decades, the thing I'm proudest of is the role that this company has played in making the power of digital technology accessible and affordable. Software running on personal computers and other devices is the best tool for empowerment in human history. Microsoft founded the personal computer software business and we built the platforms that enabled the software industry to develop. Without your contributions, we would not have succeeded in making our dream of a computer on every desk and in every home a reality for more than 1 billion people worldwide—a dream we will extend to everyone in the future.
 
As I make the transition to focus more of my time and energy on the Gates Foundation, I am looking forward to applying the lessons I've learned—and, in some cases, the technologies that we have developed—to help address some of the critical issues that people around the world face in education, economic development, and health.
 
I want to thank all of you for your hard work and your dedication. It has been a privilege and an inspiration to come to Microsoft every day. I look forward to the amazing, world-changing innovations you will deliver in the years ahead as you continue the great work this company has always done.
Bill
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数字分立元件遭侵权，ADI成原告
发表于 2008-6-2 16:52:56
模拟器件公司(ADI)日前表示,已在美国波士顿联邦地方法院控告Silicon Laboratories公司侵犯其专利。
    
    
    ADI指控Silicon Labs的Si84xx系列产品侵犯了与ADI的iCoupler数字分立产品有关的物理结构和信号技术的多项美国专利。ADI进一步指控Silicon Labs的产品数据表侵犯了iCoupler产品的ADI数据表版权。ADI要求数额不详的赔偿和法院阻止Silicon Labs将来继续侵权的禁令。
    
    ADI的副总裁兼总顾问Margaret Seif在声明中表示,ADI在分立元件领域获得了10多项专利。“我们在1997年开始对这项技术进行投资,并在2001年开始销售采用该技术的产品。”Seif表示,“我们通过今天的行动来保护我们的知识产权和投资。”
    
    该公司还表示,它在其它一些国家也为其数字分立产品申请了专利,正在等待审批。
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