PCB Topics

November 1, 2008

Learning the value of preparation and simulation by OSMOSIS

OSMOSIS is a super-fast optical switch developed through the Advanced Simulation and Computing program. The article describes the strategies adopted by the IBM team charged with designing the Central Scheduler board for the project. The design was of a far greater complexity than the team had previously encountered, and as a result, developed new pre-preparation […]

November 1, 2008

The impact of HDI and microvias on PCB design

What impact do HDI via structures have on PCB design metrics? Andy Kowalewski describes a recent experiment. A PCB’s density has traditionally been seen as a function of the trace and space geometry and the number of signal layers. Emerging technologies such as microvias and buildup fabrication may force us to rethink this formula. In […]

September 1, 2008

Planting seeds

The 17th annual PCB West Conference and Exhibition takes place this year at the Santa Clara Marriott, September 14-19. For 2008, the conference’s theme is “Grow your knowledge in the heart of Silicon Valley.” This is an approach intended to reflect some of the obvious hot button issues in board design (e.g., high-speed, lead-free, etc.) […]

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September 1, 2008

Product development efficiency through ECAD-MCAD collaboration

In May 2008, the ProSTEP iViP Association released an agreed data schema and communication protocol to enhance collaboration between electrical and mechanical CAD tools (ProSTEP iViP Recommendation ECAD/MCAD, PSI 5). The article sets out the need for the new standards and how they deliver greater design effi ciencies than existing technologies, such as the IDF […]

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November 1, 2007

What to look for when using an external PCB design center

The successful completion of complex PCB layouts requires a combination of highly skilled and experienced layout designers, a structured front-to-back design process, and advanced EDA toolsets. Success can be defined as meeting or exceeding all electrical, mechanical, and manufacturing requirements, and, where an external PCB design center is involved, satisfying the client in all interactions [...]
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December 1, 2006

Left shifting DFM analysis into the PCB design flow

What do we mean by a ‘left shift’ in design for manufacturing (DFM) analysis? Think of it as moving the DFM analysis from a tool run by the manufacturer into an integrated solution within the printed circuit board (PCB) design system. It is a major advance in the design of PCBs, allowing users to ultimately [...]
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March 1, 2006

Which ADC architecture is right for your application – Part Two

Selecting the proper ADC can appear a formidable task. A direct approach is to go to the selection guides and parametric search engines. Enter the sampling rate, resolution, power supply voltage, and other properties. Click ‘find’. But can one approach the task with greater understanding — particularly of the main architectures — and get better […]

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December 1, 2005

Which ADC architecture is right for your application – Part One

Introduction Selecting the proper ADC can appear a formidable task, considering the thousands on the market. A direct approach is to go to the selection guides and parametric search engines. Enter the sampling rate, resolution, power supply voltage, and other properties. Click ‘find’. And hope for the best. But it’s usually not enough. How does […]

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