In modern electronic systems, the performance of FPGAs, CPUs, and other high-speed logic devices depends on the power distribution...

In modern electronic systems, the performance of FPGAs, CPUs, and other high-speed logic devices depends on the power distribution...

In modern electronic systems, the performance of FPGAs, CPUs, and other high-speed logic devices depends on the power distribution...

Recently, I used a shielded coaxial cable to measure power supply ripple and the results were even noisier than using an oscilloscope...

Many engineers are familiar with the Bode plot as an effective stability assessment method. However, some authors suggest and even teach...

Engineers are under constant pressure to improve the performance of their products while reducing product cost. The key to doing so is a...

Since no impedance path is perfectly flat, we need to make some design adjustments. This article aims to help you make compromises that...

There are many good analyzers available for measuring PDN High performance VNAs are available from all of the major test equipment...

You’re probably familiar with clamp on current probes, but chances are you don’t know much about the Rogowski current probe. A Rogowski...

In 1938 Hendrik Wade Bode, who worked at Bell Labs, published his asymptotic assessment of phase margin and gain margin, bearing his name...

Some low-dropout regulators (LDOs) use multiple feedback loops to improve output voltage transient response. In many of these cases, some...

And by taking measurements across all three test domains, designers can trace power supply ripple-related problems back to root causes...

Because of their high ESL compared to ceramic, tantalum capacitors are not the optimum choice for high frequency decoupling. Paralleling...

A frequency response analyzer (‘FRA’) is often used to measure gain and phase plots of control loops (Bode plots), filter responses and...

Although not quite as accurate as the two-port VNA impedance measurement, the current injection technique has advantages including wide...

Keep it flat Most PDN books tell you that the best performing PDN impedance looks flat over frequency.  That is because noise signals are...

It can measure impedance and that can get you there. We measure permeability by relating the inductance and physical core parameters such...

Shunt through, wideband measurements can be made from approximately 100 microohms to a few ohms. This is the measurement performed by...

The vast majority of design issues are directly or indirectly attributable to control loop stability. The most common offenders: Linear...

This video focuses on single-port measurements, describing how they can be applied to low power circuits such as linear regulators,...