PSRR/PSNR/PSMR

Focuses on power supply rejection and modulation metrics, including measurement and interpretation of PSRR, PSNR, and PSMR in amplifiers, converters, and systems.

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PSRR Testing with the J2120A Line Injector

Dealing with Line Injection Issues Here is information on the Power Supply Rejection Ratio (‘PSRR’) measurement setup using the J2120A line injector. Depending on…
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Video
Analog Output Signal Modulated by VRMs

Masashi Nogawa’s latest article examines how the output noise signal of RF or analog electronic components is affected by disturbances in their power supply…
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Product
How to Test PSRR, PSNR and PSMR for Sensitive Applications, Including Optical Transceivers

Click here to download the paper Presented by: Steven M. Sandler, Managing Director, Picotest Originally presented on October 5, 2022 during EDI CON Online…
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Product
Measuring Converter Input Impedance Using Picotest Tools

To design a stable input filter for a switching converter, measuring input impedance is crucial. Picotest’s J2121A High Power Line Injector simplifies this by…
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Article
Ultra-Low Impedance Measurement: Testing and Optimizing with the J2114A

Ultra-Low Impedance Measurement: Testing and Optimizing with the J2114A – High CMRR Isolation Amplifier – Ground Loop Breaker Testing ultra-low impedance is critical to…
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Article
Power Integrity Testing Requirements Introduce Extreme Interconnect Measures

Power Integrity (PI) engineers are familiar with the ground shield effect in the 2-port shunt through measurement. If not, there are many papers, articles,…
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Video
EDACafe Bunker Broadcast – Steve Sandler Discusses Testing 2000 Amp Chips with Sanjay Gangal

Check out this EDA Cafe Interview with Steven Sandler, CEO of Picotest. He discusses their 2,000 Amp ultra-high speed ASIC emulator (in-socket load) –…
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Video
Evaluating Voltage Regulator Stability Using Step Load Testing

Engineers are busy replacing and updating their aged PC boards that use traditional transistors, typically super-junction silicon MOSFETs and Insulated-Gate Bipolar Transistors (IGBTs). One…
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Article
Power Integrity: Ensuring Clean and Stable Power Supplies

The stability and cleanliness, from a noise perspective, of power sources are vital for the reliable operation of modern electronics. Power Integrity (‘PI’), is…
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Article
PSRR in the Real World

Masashi Nogawa, Sr. Member of Technical Staff, Qorvo Published on Microwave Journal.com Explore the world of RF power supply and the challenges that power…
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Article
Load Regulation, Vout/Iout, and Output Impedance

Published October 6, 2023 Masashi Nogawa, Sr. Member of Technical Staff, Qorvo In this article, we’re taking a short break from talking about Power…
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Article
RF Signal Integrity to Power Integrity

Here is the complete collection of Marashi Nogawa’s series focusing on RF Signal Integrity to Power Integrity. Each article provides you with an investigation…
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Article
Application Note – Port Saver – The Smart DC Block

Most instruments don’t tolerate high voltages well. High bandwidth oscilloscopes, spectrum analyzers, and vector network analyzers can easily be damaged by less than 5V.…
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Article
Noise Immunity Testing: Unveiling the Power and Benefits of P2124A High-Speed Water-Cooled GaN Probe

In precision measurement and power integrity testing, engineers face the constant challenge of ensuring accurate and reliable results in high-speed modulation designs. At Picotest,…
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Article
Picotest Releases New Power Stage Isolator – Tests Plant Gain

The J2103A POwer Stage Isolator allows you to measure power supply open-loop and control loop gain including plant gain. The J2103A Power Stage Isolator is a…
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Article
Test Training Available from Picotest

Did you know Picotest has published a variety of training aids for engineers looking to learn power supply and power integrity testing methods? This…
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Video
Picotest’s New P2124A PSRR/PSMR/PSNR Water-Cooled GaN Probe at OFC

Pavel Zivny, Tektronix, explains the Picotest P2124A Noise Immunity Probe test setup shown in the Tektronix booth at the OFC (Optical Networking and Communication…
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Article
Picotest Releases the World’s First Water-Cooled Electrical Probe for High-Speed Test Applications

The P2124A High Speed Line Modulator is the first water-cooled probe for electronics testing. Its creation is yet another testament to Plato’s axiom that…
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Article
DesignCon Spring Break Webinar Series: Power Integrity: Analyze Impedance to Improve Power Delivery, SI & EMI

Overview Title: Power Integrity: Analyze Impedance to Improve Power Delivery, SI & EMI Available on demand Duration: 1 hour Summary Join DesignCon in this webinar series presented by…
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Article
New J2161A Brings 2-Port Shunt-Through Impedance Measurement to Scopes

August 7, 2019 Phoenix, AZ: Picotest.com, a leader in high resolution test and measurement equipment, has released the J2161A, 2-Way Wideband Active Splitter. This accessory…
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Article
Picotest Bundle Supports Tektronix, Keysight, Siglent, and Rohde & Schwarz Scope FRA Features – Bode Plots and PSRR Testing

We have an FRA Bundle of signal injectors that enables Bode plots and PSRR (power supply rejection ratio) measurements for Keysight, Tektronix, Siglent, and…
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Article
New Common Mode Transformer Solves PDN 2-Port Shunt-Through Measurement Hurdle

We have released an updated common mode transformer, or ground loop isolator, that provides the best isolation for low-impedance power distribution network (PDN) measurements.…
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Article
Picotest Expands Line of PSRR Line Injectors Adding Inductor and Input Impedance Testing

We have released a new line injector for PSRR (power supply rejection ratio), DC-biased inductor, and DC-DC converter input impedance testing. The J2121A is…
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Article
New Semi-Floating Differential Amp Solves PDN 2-Port Shunt Thru Measurement Hurdle

December 19, 2017, Phoenix, Arizona: Picotest.com, a leader in high resolution test and measurement equipment, has released a new solid-state Semi-Floating Amplifier (SFA), or ground…
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Article
PICOTEST NEWSLETTER 1/2015

Picotest Announces Transmission Line Probes Solve Loading/Cable & Load Step Issues Picotest’s 1 and 2 Port 50 ohm transmission line probes are now available. These…
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Video
Techniques for accurate PSRR measurements

By John Rice, System Engineer, Texas Instruments and Steve Sandler, Managing Director, Picotest IntroductionIn theory, measuring the power-supply-rejection ratio (PSRR) is relatively simple. A…
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Article
Troubleshooting Distributed Power Systems: Using Current Injectors (Part 5 of the ongoing video series.)

Previous videos in this series discussed the use of vector network analyzers (VNAs) to measure impedance using one- or two-port configurations. This video discusses…
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Video
Five Things Every Engineer Should Know About PDN

We generally associate the Power Distribution Network (“PDN”) with the power circuits used to drive CPUs and FPGAs. The increasing use of FPGAs in…
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Article
FAQ#25: How do you measure PSRR of a linear regulator circuit that powers an oscillator for an ADC? How can I make this measurement using an oscilloscope?

Steve Sandler Answers Your PSRR Questions (Power Electronics’ Q&A Series Follow Up) Earlier this month Power Electronics received a question about “How to measure…
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Article
Troubleshooting Distributed Power Systems: Why Stability Matters (Part 1 of the ongoing video series.)

Control-loop stability impacts power supply performance in multiple ways. Even if the control loop is not oscillating, poor stability—as evidenced by low phase margin—in…
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Video
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…
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Article
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? Simply, it interferes with the performance of digital…
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Article
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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Article
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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Article
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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Article
Power Supply Measurement Techniques Instructional Videos: PSRR Measurement using the J2120A Line Injector

The instructional video demonstrates the PSRR measurement of a voltage regulator using the Picotest J2120A Line Injector and also discusses what the measurement represents.…
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Video
Step-by-Step Guide to Measuring PSRR Using a Network Analyzer and the Line Injector

This application note shows how the Power Supply Rejection Ratio, or PSRR, of a linear voltage regulator (LM317) can be measured using the Picotest…
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Article
Signal Injection Transformers – What makes them special?

In this article we’ll take a look at what makes the signal injection transformer special, why an audio or video transformer is not a…
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Video
Broad Injector Product Line Eases Power Supply Stability Analysis

Developed to aid power supply designers in control-loop stability analysis, Picotest’s line of signal injectors are being introduced as the “most flexible and sophisticated…
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Article

PSRR/PSNR/PSMR

PSRR Testing with the J2120A Line Injector

Analog Output Signal Modulated by VRMs

How to Test PSRR, PSNR and PSMR for Sensitive Applications, Including Optical Transceivers

Measuring Converter Input Impedance Using Picotest Tools

Ultra-Low Impedance Measurement: Testing and Optimizing with the J2114A

Power Integrity Testing Requirements Introduce Extreme Interconnect Measures

EDACafe Bunker Broadcast – Steve Sandler Discusses Testing 2000 Amp Chips with Sanjay Gangal

Evaluating Voltage Regulator Stability Using Step Load Testing

Power Integrity: Ensuring Clean and Stable Power Supplies

PSRR in the Real World

Load Regulation, Vout/Iout, and Output Impedance

RF Signal Integrity to Power Integrity

Application Note – Port Saver – The Smart DC Block

Noise Immunity Testing: Unveiling the Power and Benefits of P2124A High-Speed Water-Cooled GaN Probe

Picotest Releases New Power Stage Isolator – Tests Plant Gain

Test Training Available from Picotest

Picotest’s New P2124A PSRR/PSMR/PSNR Water-Cooled GaN Probe at OFC

Picotest Releases the World’s First Water-Cooled Electrical Probe for High-Speed Test Applications

DesignCon Spring Break Webinar Series: Power Integrity: Analyze Impedance to Improve Power Delivery, SI & EMI

New J2161A Brings 2-Port Shunt-Through Impedance Measurement to Scopes

Picotest Bundle Supports Tektronix, Keysight, Siglent, and Rohde & Schwarz Scope FRA Features – Bode Plots and PSRR Testing

New Common Mode Transformer Solves PDN 2-Port Shunt-Through Measurement Hurdle

Picotest Expands Line of PSRR Line Injectors Adding Inductor and Input Impedance Testing

New Semi-Floating Differential Amp Solves PDN 2-Port Shunt Thru Measurement Hurdle

PICOTEST NEWSLETTER 1/2015

Techniques for accurate PSRR measurements

Troubleshooting Distributed Power Systems: Using Current Injectors (Part 5 of the ongoing video series.)

Five Things Every Engineer Should Know About PDN

FAQ#25: How do you measure PSRR of a linear regulator circuit that powers an oscillator for an ADC? How can I make this measurement using an oscilloscope?

Troubleshooting Distributed Power Systems: Why Stability Matters (Part 1 of the ongoing video series.)

FAQ #23 What Injectors do I need for PDN Measurements?

Clock Power Optimization Depends On Jitter Control

Measuring Op Amp PSRR

Measuring the Output Impedance of Voltage References and Zener Diodes

Measuring the PSRR of Voltage References

Power Supply Measurement Techniques Instructional Videos: PSRR Measurement using the J2120A Line Injector

Step-by-Step Guide to Measuring PSRR Using a Network Analyzer and the Line Injector

Signal Injection Transformers – What makes them special?

Broad Injector Product Line Eases Power Supply Stability Analysis