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New Test Adapters Improve Your PDN Measurements
This article discusses measurement of small resistances, such as those encountered during PDN measurement, using the OMICRON Lab Bode 100, Keysight E5061B, and the…
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An Unconditionally Stable Linear Voltage Regulator
Is it possible to design an unconditionally stable linear voltage regulator? In fact, many believe that most regulator ICs are unconditionally stable. The answer…
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Introduction to the J2110A Solid State Injector
Most of us have experience using a wideband signal injection transformer to introduce a modulation signal into our loop stability test. While a high-quality…
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FAQ #19: What is the difference between a Frequency Response Analyzer (FRA) and a Vector Network Analyzer (VNA)?
What is the difference between a Frequency Response Analyzer (FRA) and a Vector Network Analyzer (VNA)? The FRA is generally designed to measure Bode…
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Measuring Op Amp PSRR
In this article we detail the process of measuring a key performance characteristic of operational amplifiers (Op Amps), power supply rejection ratio or “PSRR”,…
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FAQ #18: What injection resistor value should I use? Is it okay to use a little larger resistor like 30 or 50 ohm instead of 5 ohm (like many app notes recommend)?
What injection resistor value should I use? Is it okay to use a little larger resistor like 30 or 50 ohm instead of 5…
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Extracting Bode Plots from Output Impedance
Many articles and application notes describe the extraction of phase margin, using a non-invasive technique that extracts the phase margin from an output impedance…
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Stability Assessment of Fixed Regulators
There are cases where a Bode (gain?phase) plot cannot be obtained from a control loop. For example, a three terminal regulator or hybrid may…
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Are We Focused On The Wrong Reference Parameters?
Designing a reliable circuit that employs a voltage reference requires a more detailed look at device parameters than most data sheets provide. The key…
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Measuring the Output Impedance of Voltage References and Zener Diodes
In this article we examine the process of measuring a key performance characteristic, output impedance, using the Picotest J2130 DC Dias Injector and the…
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Measuring the PSRR of Voltage References
In this article we detail the process of measuring a key performance characteristic of voltage references, power supply rejection ratio or “PSRR”, using the…
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Power Supply Crosstalk Measurement: Using the Bode 100 and the Picotest J2111A Current Injector
This application note shows how the crosstalk characteristic of a system of two linear voltage regulators can be measured using the OMICRON Lab Bode…