Signal Integrity

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This article shows the impact of using one of the first DDR4-3200 FPGA memory controllers, the Xilinx Versal, interfaced to a UDIMM to show a method for accurately correlating signal integrity simulations to measurement.

In this installment of Practical EMC, Ken Wyatt reviews real-time spectrum analyzers, helping you to pick the one best suited to your needs and within your price range.

In this power-electronics article, we focus on noise measurement of 48 V range voltage regulators (VRs), up to a maximum of 65 V. We propose a noise measurement setup and examine this method.

About 150 years ago the first stable transatlantic cable was laid and messages were sent between Ireland and Newfound­land over copper. The data rate on this cable was not even 1 bit/sec, it was 0.1 bit/sec. Concerns over the cable reliabil­ity and the slow data rate led some to believe copper was doomed as a communication media for these long cables.

In part one of this article, Bert Simonovich explained how air entrapment is the primary reason for Dkeff and phase delay discrepancies between simulation and DUT measurements. Read on to discover how to fix this issue.

Since the inception of IBIS, the IBIS Committee has been working to improve and accommodate limitations of the model. This article gives a synopsis of that history, along with detailing the latest version, IBIS 7.1.  

Steve Sandler was recently asked to measure a 25 mH inductor. Read on to find out what happened next.

In this article, John Baprawski reviews various issues when using S-parameter files to represent the channel in a SerDes system channel simulator. Stepping through several detailed examples, he demonstrates how paying close attention to the quality of the S-parameters allows you to have confidence in the derived SerDes design eye diagrams and other analysis methods. 

In this overview of the principles of high-performance PCB layout, Joe Aguilar illustrates thermal design approaches, supplies a synopsis of the power delivery network (PDN), tells strategies for routing high currents with reduced impedance, and provides important considerations for designing effective decoupling capacitance. 

Do I really need to use a power rail probe to measure ripple and noise? Power rail probes are single ended, so does that mean I can only monitor one power rail at a time? Are there other, more affordable options available? In this blog post, Steve Sandler answers to these questions and more.