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Creating a DCO-based Audio Synthesizer With an Arduino Nano

Creating a DCO-based Audio Synthesizer With an Arduino Nano

In this project, learn to create a digitally-controlled oscillator or DCO-based audio synthesizer with an Arduino Nano or an Arduino Uno.


Projects Apr 09, 2023 by Darby Hewitt
MIT Presents Mobile Receiver Chip to Block Interfering Signals

MIT Presents Mobile Receiver Chip to Block Interfering Signals

MIT’s receiver architecture offers effective harmonic cancellation all in the RF domain.


News Mar 02, 2023 by Aaron Carman
ECS ECS-327KE SMD Clock Oscillator | Featured Product Spotlight

ECS ECS-327KE SMD Clock Oscillator | Featured Product Spotlight

This Featured Product Spotlight is part of a video series exploring the specifications, applications, and market context of new products.


Reducing Quantization Distortion Via Subtractive and Non-subtractive Dithering

Reducing Quantization Distortion Via Subtractive and Non-subtractive Dithering

Learn how dithering can suppress both harmonic and non-harmonic spurs and two different types of dithering systems: subtractive and non-subtractive topologies.


SiTime Sharpens Precision Timing With Two Mission-critical Oscillators

SiTime Sharpens Precision Timing With Two Mission-critical Oscillators

SiTime has unveiled two new oscillator families for aerospace and defense applications—a field that requires the most precise timing solutions.


News Jan 30, 2023 by Jake Hertz
Digital Square Wave Generator Design Via a Ring Oscillator, 555 Timer, and Arduino

Digital Square Wave Generator Design Via a Ring Oscillator, 555 Timer, and Arduino

Learn about digital square wave generators using a ring oscillator, a 555 timer-based oscillator, and an Arduino-generated square wave oscillator.


What is Dithering? Using Dithering to Eliminate Quantization Distortion

What is Dithering? Using Dithering to Eliminate Quantization Distortion

Learn how dithering can be added to a signal to improve the performance of an analog-to-digital conversion system by eliminating quantization error and distortion.


5 Online EE Resources I WOULD Have Been Thankful For

5 Online EE Resources I WOULD Have Been Thankful For

On this Thanksgiving Day, Jeff wonders what his EE college days would have been like if he’d had access to All About Circuits’ rich online resources.


News Nov 24, 2022 by Jeff Child
Op Amp and Transistor-based Analog Square Wave Generator Design

Op Amp and Transistor-based Analog Square Wave Generator Design

Analog oscillator circuits are commonly used to create square wave clock signals for the timing of synchronous circuits. This article covers the theory, design, and key features of analog square wave generators.


Nordic Semiconductor Rolls Out Its First Wi-Fi IC

Nordic Semiconductor Rolls Out Its First Wi-Fi IC

Complementing its existing wireless IoT offerings, Nordic Semiconductor has unveiled a dual-band Wi-Fi 6 companion chip.


News Aug 22, 2022 by Jake Hertz
Take Our 2022 EETech Global Engineering Survey

Take Our 2022 EETech Global Engineering Survey

Join your engineering community peers and take our EETech 2022 Global Engineering Survey. You’ll get a summary of the results once they’re released. And you’ll be entered for a chance to win an Amazon card prize!


News Aug 09, 2022 by Jeff Child
Piezoelectric Accelerometers With Integrated Electronics Piezoelectric (IEPE)

Piezoelectric Accelerometers With Integrated Electronics Piezoelectric (IEPE)

Learn about piezoelectric accelerometers with integrated electronics piezoelectrics (IEPEs), namely an IEPE's voltage mode, charge mode, and dynamic range.


Testing the Waters: Quantum T&M Equipment Adds Rohde & Schwarz to Its Roster

Testing the Waters: Quantum T&M Equipment Adds Rohde & Schwarz to Its Roster

With quantum computing striving to become mainstream, T&M equipment will play a pivotal role. Ensuring this, Rohde & Schwarz jump into the quantum T&M playing field.


News Jul 23, 2021 by Kristijan Nelkovski
How to Measure the Drive Level of a Quartz Crystal

How to Measure the Drive Level of a Quartz Crystal

Learn why the drive level of your quartz crystal oscillator is important and several methods for how to measure it.


Examining the Negative Resistance of a Quartz Crystal Oscillator

Examining the Negative Resistance of a Quartz Crystal Oscillator

This article discusses how we can examine the oscillator circuit to make sure that it has sufficient “negative resistance” or “oscillation allowance”.


How Current-Sense Amplifiers Monitor Satellite Health

How Current-Sense Amplifiers Monitor Satellite Health

How do we know how a satellite in space is doing from here on Earth? Learn how current-sense amplifiers or CSAs are a crucial part of several satellite monitoring systems.


Understanding the Operation of Quartz Crystal Oscillators

Understanding the Operation of Quartz Crystal Oscillators

In this article, we’ll try to develop a deeper insight into the operation of a quartz crystal oscillator.


Characterizing Frequency Deviations of Quartz Crystals: Frequency Tolerance, Frequency Stability, and Aging

Characterizing Frequency Deviations of Quartz Crystals: Frequency Tolerance, Frequency Stability, and Aging

Learn about some of the most important characteristics of quartz crystal frequency deviations.


LVDT Demodulation: Rectifier-Type vs. Synchronous Demodulation

LVDT Demodulation: Rectifier-Type vs. Synchronous Demodulation

Learn how two methods of demodulation compare: synchronous demodulation and rectifier-type demodulation. Here we discuss each method's advantages, drawbacks, and appropriate applications.


An Introduction to Switched-capacitor Circuits

An Introduction to Switched-capacitor Circuits

In this series of articles, we’ll discuss one of the fundamental building blocks of analog IC design: the switched-capacitor circuit.