Items Tagged with 'signal'



Nine Essential Principles of Signal Integrity

SIJ technical editor Eric Bogatin notes that there are some problems that occur over and over again across product families and applications. They have a handful of essential principles at their underlying root cause. In this blog, he explains that if we really understand these underlying principles, the root cause of the problems will be more apparent and their solutions closer to implement.

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The Truth About High-Speed Connector Design

It’s Not as Simple as Just Putting Metal and Plastic Together

In the high-speed connector design arena, there are two opposing ideas. For some people, if you simply put pieces of plastic and metal together, eventually you have a signal transmission. This process is very simple. On the other end of the spectrum, there is the idea that a solid connector design requires a deep understanding of electromagnetic theory, a wisdom only sorcerers and wizards possess.

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Characterizing and Selecting the VRM

VRMs and VRM controllers are often selected based on size, efficiency, price, or a relationship with the manufacturer. This often leads to a poor VRM selection, requiring additional engineering resources, greater time to market, as well as, higher BOM costs to correct the deficiencies. In this article, we evaluate the choices, define some useful figures of merit, and provide specific selection suggestions.

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Target Impedance Limitations and Rogue Wave Assessments on PDN Performance

A common design technique for power distribution networks (PDN) is the determination of the peak distribution bus impedance that will assure that the voltage excursions on the power rail will be maintained within allowable limits, generally referred to as the target impedance. In theory, the allowable target impedance is determined by dividing the tolerable voltage excursion by the maximum change in load current.

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Polar Launches Online Base Material Libraries for Speedstack PCB Layer Stackup Design System

Polar Instruments - a specialist provider of tools for PCB design, fabrication and test - has launched new online base material libraries for Speedstack, the industry’s favorite PCB layer stackup design system. In addition, Polar is encouraging other base material suppliers to provide updated data to make this the most comprehensive updated material library resource for PCB specifiers.

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Spectrum Adds Increased Sensitivity Option to its Digitizer Products

Spectrum GmbH has announced an option (M4i.22xx-ir40m) for its highly successful, high-speed 22xx series of digitizer products that increases their sensitivity and therefore absolute resolution for low amplitude signals in the ±40 mV up to ±0.5 V range.  The current products are optimized to acquire, store and analyze signals in the ±200 mV up to ±2.5 V range.

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Rohde & Schwarz

Rohde & Schwarz Introduces a Modular Probe System for Precision Measurements up to 9 GHz

Measuring fast data signals, e.g. on SuperSpeed USB or PCIe-2.0 interfaces, requires an oscilloscope that can acquire and analyze data rates up to 5 Gbit/s and suitable probes. The new R&S RT-ZM modular broadband probe system from Rohde & Schwarz ensures that optimum contact is made with the DUT. It provides a high dynamic range and, depending on the tip and test mode, an extremely low input capacitance of 32 femtofarad to 521 femtofarad up into the GHz range.

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