Optimizing Power for Clocks and other Sensitive Applications
Click here to read the entire article. #noise #Crosstalk #powerintegrity #noisesensitivecircuit #signalanalyzers #decoupling #vrts3...
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Impedance measurements stabilize op-amp buffers
Figure 1. Op amps are often used as unity gain signal buffers, which are not as simple to use as it may appear. The unity-gain op amp...
Paultre on Power – Steve Sandler of Picotest on power test and noise (Podcast)
October 31, 2014 In this podcast Steve Sandler of Picotest talks to Alix Paultre of Power Systems Design on the issues of power test,...
Techniques for accurate PSRR measurements
By John Rice, System Engineer, Texas Instruments and Steve Sandler, Managing Director, Picotest Introduction In theory, measuring the...
Three Stability Assessment Methods Every Engineer Should Know About
Many engineers are familiar with the Bode plot as an effective stability assessment method. However, some authors suggest and even teach...
Inside the 21st Century Power Test Lab
In this 5-minute video, Steve Sandler of AEi Systems (www.aeng.com) and Picotest (www.picotest.com) takes you on a tour of an advanced...
Five Things Every Engineer Should Know About Bode Plots
In 1938 Hendrik Wade Bode, who worked at Bell Labs, published his asymptotic assessment of phase margin and gain margin, bearing his name...
Troubleshooting Distributed Power Systems: Making Time Domain Measurements (Part 8 – The final
He presents examples of various waveform anomalies and discusses techniques and tips for observing them as well as pitfalls to avoid....
Non-Invasively Assess Your Multiple-Loop LDO’s Stability
Some low-dropout regulators (LDOs) use multiple feedback loops to improve output voltage transient response. In many of these cases, some...
Troubleshooting Distributed Power Systems: Measuring Ripple (Part 7 of the ongoing series)
And by taking measurements across all three test domains, designers can trace power supply ripple-related problems back to root causes...
Troubleshooting Distributed Power Systems: Using Current Injectors (Part 5 of the ongoing video seri
Although not quite as accurate as the two-port VNA impedance measurement, the current injection technique has advantages including wide...
How to Solve 8 of 10 Design Issues
The vast majority of design issues are directly or indirectly attributable to control loop stability. The most common offenders: Linear...
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,...
Clock Power Optimization Depends On Jitter Control
Clock-jitter performance has become a top priority among clock, analog-to-digital controller (ADC), and power-supply manufacturers. Why?...
Assessing Point-Of-Load Regulators Using Non-Invasive Techniques
Evaluating the stability of a Point-Of-Load (“POL”) regulator can be performed using both traditional Bode plot and output impedance...
FAQ #22: So how does this non-invasive measurement relate to phase margin and gain margin?
We can equate the stability to an equivalent phase margin by assuming the magnitude of the gain vector to be 1 and solving for the Q. In...
New Injector Supports Testing of POLs
High Fidelity POL Testing with the J2112A The J2112A: Faster, Non-Invasive, and High Fidelity POL Step Load Testing Testing the step load...
FAQ #21: How do you use the Picotest injectors and the Agilent analyzer to measure output impedance
How do you use the Picotest injectors and the Agilent analyzer to measure output impedance and/or non-invasive step loading? For the...
Essential Test Adapters for Your Network / Impedance Analyzer
The network analyzer, sometimes referred to as a Frequency Response Analyzer (FRA) is a common piece of equipment in most of our labs...
When Bode Plots Fail Us
It may come as a surprise to some that a control loop’s Bode plot does not always depict the loop stability and that the output impedance...
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