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Samtec PowerPoser Interposer Offers Smoothing on a Noisy Subject October 2007
“When someone says their power integrity flow cuts out the guess work, they are lying,” Scott McMorrow, President of Teraspeed, says. “It really doesn’t—it just cuts out part of the guess work.” |
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"It Is Vanity to Do With More That Which Can Be Done With Less" September 2007
The mantra of the electronics packaging industry used to be “faster, denser, cheaper, NOW!” These driving forces fueled the development and introduction of the five most important packaging technology revolutions of the last 10 years. |
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Don't Breathe Too Hard August 2007
High-speed serial links are fragile. You have to worry about tiny vias that might make up less than 1 percent of the total path length. You have to worry about the size, shape, and orientation of the glass weave in the laminate. You have to worry about the surface roughness of the copper. You have to worry about the size and location of the via clearance holes in the copper planes near the connectors. All of these delicate adjustments must be just right for a successful design. Now there’s a new worry. |
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The Shape of Things to Come? July 2007
“200 million flat screen TVs are expected to be sold in the next few years,” Fred Martin, Director of R&D for the Flatwire Technologies Division of Southwire says. “The new paradigm is that the flat screen TV is on the wall and the audio, video, and game box equipment is in another corner of the room.” Who wants unsightly, bulky cables routing around your living room or family room connecting all the electronic boxes that proliferate in the home? |
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Got 12 Ports? June 2007
It is often said, “Everything you ever wanted to know about a differential channel is contained in its 4-port differential S-parameters.” While this is perfectly true, it is not enough. In long backplane channels, which are strongly dominated by losses, crosstalk may pose the limitation to receiving the highest bit rate. This effect is not detectable with 4-port S-parameters in the standard configuration.
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Embrace Innovation to Survive May 2007
“I’ve traveled around the world and talked to hundreds of electronics companies and I keep hearing three common business drivers: reduce time to market by 50 percent, increase productivity by 30 percent, and design more competitive products.”
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Weave and Skew April 2007
The use of high-speed serial links in excess of 2.5 Gbps has accelerated since the turn of this century. Design principles for differential impedance, via stubs, conductor losses, and dielectric losses have been well established.
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16 EMC Rules March 2007
More than 10 years ago, the Electromagnetic Compatibility Lab (EMC) at the University of Missouri at Rolla (UMR) developed a set of board-level design rules that, if followed, maximize the chance of a product passing an EMC certification test. |
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Moving Toward the Transparent Connector February 2007
The higher the bit rate, the more problems connectors introduce. This article describes two technology options that may offer building blocks that can shift the connector design paradigm from pin-in-box to pad-to-pad and approach an electrically transparent connector. |
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Automated TDR Testing January 2007
What do you get when you cross precision time domain reflectometry (TDR), high bandwidth microprobes, and a CAD database-driven, multi-head flying prober? Answer: You get the Introbotics Automated Controlled Impedance Tester. |
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"So, What Do You Do?" December 2006
It’s the holiday season and with it comes the obligatory family gatherings and community parties. There’s that moment of dread you know you will face. You are standing by the eggnog bowl, you turn your back for just an instant, and your spouse disappears, leaving you defenseless. |
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Need High-Speed Network Testing? Who You Gonna Call? November 2006
"We are the Switzerland of the networking industry," says Andy Baldman, member of the senior technical staff at the InterOperability Lab at the University of New Hampshire (www.iol.unh.edu). |
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Are Guard Traces Worth It? October 2006
The board is finally back from fab. You power it on for the first time and find your sensitive LVDS line has 30 mV too much noise, and its coming from a CMOS level control line running at 3.3v. The noise is only 1% of the control line voltage, but... |
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Differential S Parameters: The New Universal Standard for Interconnects September 2006
All high-speed serial interconnect standards, such as those used in 10-Gigabit Attachment Unit Interface (XAUI), SATA, PCI-X, or InfiniBand systems, leverage differential signaling and are designed for routing on differential pairs. |
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