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Picotest
Jun 19, 20141 min read
Improve Performance And Reduce Cost
Engineers are under constant pressure to improve the performance of their products while reducing product cost. The key to doing so is a...
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Picotest
Mar 31, 20141 min read
PCB characteristics affect PDN performance
Since no impedance path is perfectly flat, we need to make some design adjustments. This article aims to help you make compromises that...
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Picotest
Mar 19, 20141 min read
Measure PDN on a budget
There are many good analyzers available for measuring PDN High performance VNAs are available from all of the major test equipment...
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Picotest
Nov 26, 20131 min read
PDN Basics – Paralleling Tantalum and Ceramic Capacitors Can Be Risky
Because of their high ESL compared to ceramic, tantalum capacitors are not the optimum choice for high frequency decoupling. Paralleling...
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Picotest
Nov 7, 20131 min read
PDN Issues Occur in the Simplest of Circuits
A single tiny logic gate The first case we’ll look at is a Fairchild NC7SZ04 ultra-high-speed inverter gate. This logic gate is a single...
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Picotest
Oct 1, 20131 min read
Five Things Every Engineer Should Know About PDN
Keep it flat Most PDN books tell you that the best performing PDN impedance looks flat over frequency. That is because noise signals are...
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Picotest
Sep 10, 20131 min read
FAQ# 27: Why is PDN measured using a VNA and not an oscilloscope?
Steve Sandler Answers Your PDN Questions (Power Electronics’ Q&A Series) Power Electronics received a question about why PDN is measured...
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Picotest
Sep 8, 20131 min read
Troubleshooting Distributed Power Systems: Measuring Impedance Using VNAs (2-Port) (Part 4 of the on
Shunt through, wideband measurements can be made from approximately 100 microohms to a few ohms. This is the measurement performed by...
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Picotest
Aug 16, 20131 min read
Troubleshooting Distributed Power Systems: Measuring Impedance Using Vector Network Analyzers (One-P
This video focuses on single-port measurements, describing how they can be applied to low power circuits such as linear regulators,...
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Picotest
Jun 11, 20131 min read
Troubleshooting Distributed Power Systems: Impedance Is the Critical Measurement (Part 2 of the ongo
As Sandler explains, analysis based on impedance measurements can more thoroughly assess control loop stability than Bode plot...
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Picotest
May 1, 20131 min read
Target impedance based solutions for PDN may not provide realistic assessment
One of the more common design techniques for power distribution networks (PDN) is the determination of the peak impedance that will...
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Picotest
Apr 11, 20132 min read
FAQ #23 What Injectors do I need for PDN Measurements?
Our J2112A current injector has been the most requested product to date. It provides a very fast low current pulse, though based on a RF...
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Picotest
Jan 23, 20131 min read
How to Make Higher Voltage Power-Distribution-Network Measurements
Assuming the AC signals in the measurement are very small, the power ratings of the ports limit the absolute maximum DC voltage that can...
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Picotest
Apr 30, 20121 min read
New Test Adapters Improve Your PDN Measurements
The resistor being measured is a 250uOhm 1% resistor manufactured by Stackpole. The datasheet is not clear about how the device...
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