All About Circuits

Latest Oscillators Articles and Videos

Categories

Phase Margin Estimation Using the Rate-of-Closure

Phase Margin Estimation Using the Rate-of-Closure

How can we gauge stability in a negative-feedback circuit? For minimum-phase circuits, try rate-of-closure.


New RF-Sampling Transceivers From TI Feature Industry’s Widest Frequency Range

New RF-Sampling Transceivers From TI Feature Industry’s Widest Frequency Range

New quad- and dual-channel transceivers are designed for radar, software-defined radio, and 5G applications.


News Mar 07, 2019 by Gary Elinoff
Applications and Limitations of the Current-Feedback Amplifier: Dual CFAs and Composite Amplifiers

Applications and Limitations of the Current-Feedback Amplifier: Dual CFAs and Composite Amplifiers

In this article, we continue our study of the current-feedback amplifier. We’ll also look at a composite amplifier that combines the benefits of the voltage-feedback topology and the current-feedback topology.


Characteristics of Current-Feedback Op-Amps: Benefits of CFA Design vs. VFAs

Characteristics of Current-Feedback Op-Amps: Benefits of CFA Design vs. VFAs

In this article, we’ll take a more detailed look at the functionality and characteristics of current-feedback amplifiers.


A New Wideband Upconverter for High-Frequency Radar and Communication Systems

A New Wideband Upconverter for High-Frequency Radar and Communication Systems

Analog Devices has recently released an SPI-programmable RF upconverter that can translate baseband or IF signals to extremely high transmission frequencies.


News Feb 12, 2019 by Robert Keim
How to Drive Large Capacitive Loads with an Op-Amp Circuit

How to Drive Large Capacitive Loads with an Op-Amp Circuit

Learn more about capacitive load compensation.


A New 45V Zero-Drift Op-Amp from Microchip, the MCP6V51

A New 45V Zero-Drift Op-Amp from Microchip, the MCP6V51

This article looks at Microchip’s MCP6V51, which is a zero-drift operational amplifier with a wide supply range and enhanced EMI rejection.


News Feb 04, 2019 by Dr. Steve Arar
Resolving the Signal Part 12: Reducing the Effects of Power-Supply Noise using Delta-Sigma ADCs

Resolving the Signal Part 12: Reducing the Effects of Power-Supply Noise using Delta-Sigma ADCs

In part 12 of Resolving the Signal, we look at a power-supply noise design example to discuss which supplies are most critical when trying to increase a system's PSR. From that example, we offer best practices to maintain low power-supply noise and debugging tips for a system's overall noise performance.


Resolving the Signal Part 11: Understanding How Power-Supply Noise Affects Delta-Sigma ADCs

Resolving the Signal Part 11: Understanding How Power-Supply Noise Affects Delta-Sigma ADCs

Part 11 of the Resolving the Signal series explores how power supplies contribute to unwanted noise, how to measure and quantify that noise, and how noise ends up impacting system performance.


Picking Apart a New Switching Regulator from Analog Devices, the LT8361

Picking Apart a New Switching Regulator from Analog Devices, the LT8361

This article will take a look at the Analog Devices LT8361, a low IQ switching regulator supporting boost, SEPIC, and inverting topologies.


News Dec 11, 2018 by Dr. Steve Arar
How to Measure Noise in Switch-Mode Power Supplies (SMPSs)

How to Measure Noise in Switch-Mode Power Supplies (SMPSs)

Noise on switch mode power supplies (SMPSs) sometimes gets a bum rap.


Resolving the Signal Part 10: How Clock Signals Affect Precision ADCs

Resolving the Signal Part 10: How Clock Signals Affect Precision ADCs

Part 10 of the Resolving the Signal series covers how clocks affect precision ADCs, touching on clock jitter, clock intermodulation and best PCB layout practices for clocking.


How to Design Charge Amplifiers for Piezoelectric Sensors

How to Design Charge Amplifiers for Piezoelectric Sensors

This article explores charge-amplifier design details, including ESD protection and frequency response.


Power Supply Monitoring and Sequencing in a Single Chip: New Power Sequencer from Analog Devices

Power Supply Monitoring and Sequencing in a Single Chip: New Power Sequencer from Analog Devices

This article will look at the most important features of the Analog Devices ADM1266, which is a configurable power sequencing device.


News Oct 16, 2018 by Dr. Steve Arar
Clock Signal Management: Clock Resources of FPGAs

Clock Signal Management: Clock Resources of FPGAs

This article will review the common FPGA resources that allow us to efficiently generate and distribute clock signals throughout a system.


How to Perform Frequency Modulation with a Digitized Audio Signal

How to Perform Frequency Modulation with a Digitized Audio Signal

In this article, we’ll use Scilab to create an FM waveform that carries information corresponding to an audio recording.


How to Perform Frequency-Domain Analysis with Scilab

How to Perform Frequency-Domain Analysis with Scilab

In this article we’ll work with sinusoidal signals in the frequency domain using Scilab’s fast Fourier transform (FFT) functionality.


Resolving the Signal Part 8: How Voltage Reference Noise Affects Delta Sigma ADCs

Resolving the Signal Part 8: How Voltage Reference Noise Affects Delta Sigma ADCs

Part 8 of the Resolving the Signal series dives further into how different noise sources impact precision delta-sigma ADCs by focusing on reference noise and ADC noise, and how gain affects reference noise.


Measure Position and Speed Control of a DC Motor Using an Analog PID Controller

Measure Position and Speed Control of a DC Motor Using an Analog PID Controller

This article shows how to implement an analog PID controller, including adjusting of the angular position of a DC motor shaft, editing the design to control its speed, and tuning PID parameters for reliable performance.


Choosing the Right Transistor: Understanding Low-Frequency MOSFET Parameters

Choosing the Right Transistor: Understanding Low-Frequency MOSFET Parameters

This article provides an overview of various characteristics and specifications that are relevant to low-frequency MOSFET operation.