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Analyzing a Negative Voltage Charge Pump in LTspice—Source and Load Resistance

Analyzing a Negative Voltage Charge Pump in LTspice—Source and Load Resistance

Learn about using LTspice simulations to provide important insight into the performance of a switched-capacitor voltage-inverting power supply.


Designing a Wideband Analog Voltage and Current Meter

Designing a Wideband Analog Voltage and Current Meter

Design a wideband analog multimeter to measure AC voltages and currents from 20 Hz to 1 MHz with a selectable sensitivity from 1 mV to 100 V, while the ammeter has a selectable current sensitivity of 10 mA to 10 A.


Projects May 03, 2023 by John Woodgate
xMEMS’ All-silicon, Solid-state Fidelity Micro Speakers Now Available

xMEMS’ All-silicon, Solid-state Fidelity Micro Speakers Now Available

These speakers are said to offer higher performance in a smaller size, bringing high-fidelity audio to new applications.


News Apr 25, 2023 by Aaron Carman
Can Voltage Be Negative? Understanding Negative Voltage

Can Voltage Be Negative? Understanding Negative Voltage

In addition to explaining the nature of a negative voltage, this article briefly discusses how negative voltages are generated and why they are useful in circuit design.


Modules and Dev Kits Emerge for Building Amazon Sidewalk Devices

Modules and Dev Kits Emerge for Building Amazon Sidewalk Devices

As the company opens Sidewalk up for testing, the service from Amazon could have big implications in the IoT and smart home space.


News Mar 29, 2023 by Jake Hertz
STMicro Rolls All-in-one Motion and Bone-conduction Sensor for Hearables

STMicro Rolls All-in-one Motion and Bone-conduction Sensor for Hearables

With its new sensor IC, STMicroelectronics hopes to enable a new class of hearables for applications like true wireless stereo (TWS).


News Mar 06, 2023 by Jake Hertz
Infineon Unveils Tiny MEMS Microphone Touting High SNR, 520 μA Power

Infineon Unveils Tiny MEMS Microphone Touting High SNR, 520 μA Power

Putting its proprietary MEMS technology and clever ASIC design to work, Infineon marries high audio quality and low lower in a tiny microphone device.


News Feb 13, 2023 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.


Ray Dolby, the Engineer Who Revamped Sound Technology

Ray Dolby, the Engineer Who Revamped Sound Technology

Before his name became a brand and a household word, Ray Dolby was a pioneer in noise reduction technology. His innovations revolutionized the audio and entertainment industries.


News Aug 31, 2022 by Lianne Frith
Electronic Component Aging—the Aging Effects of Resistors and Op-amps

Electronic Component Aging—the Aging Effects of Resistors and Op-amps

Learn about the aging behavior of resistors and amplifiers using temperature calculations and the Arrhenius equation to understand resistor drift, resistor stability, and op-amp drift.


Amar Bose, the Man Behind the Headphones

Amar Bose, the Man Behind the Headphones

His name became legendary in the world of consumer audio, but Bose—professor, researcher, engineer, inventor—was much more than a business-savvy audiophile.


News Jul 25, 2022 by Robert Keim
The Reverberations of Alan Blumlein, the Father of Modern Stereos

The Reverberations of Alan Blumlein, the Father of Modern Stereos

Responsible for the modern stereo and an advanced World War II radar, Alan Blumlein revolutionized sound engineering.


News Jun 27, 2022 by Biljana Ognenova
Researchers Build Custom “Headphones” to Bump Atomic Radio Efficiency

Researchers Build Custom “Headphones” to Bump Atomic Radio Efficiency

NIST researchers recently built a custom headphone-like structure to boost the sensitivity of an atomic radio receiver a hundredfold.


News Jun 02, 2022 by Darshil Patel
Texas Instruments AMC1411EVM Amplifier Evaluation Module (EVM) | New Product Brief

Texas Instruments AMC1411EVM Amplifier Evaluation Module (EVM) | New Product Brief

This New Product Brief (NPB) is part of a video series highlighting the features, applications, and technical specs of newly-released products.


MEMS Microspeakers Make a Loud Statement Moving Into 2022 and Beyond

MEMS Microspeakers Make a Loud Statement Moving Into 2022 and Beyond

While balanced armature speakers have been a leading technology in true wireless earbuds, MEMS microspeakers are beginning to peak in popularity.


News May 17, 2022 by Jake Hertz
Understanding Charge Amplifier Errors—Time Constant and Drift

Understanding Charge Amplifier Errors—Time Constant and Drift

Learn about charge amplifier limitations at low frequencies, the effects of time constants, and how the drift phenomenon can also introduce errors in low-frequency measurements.


Processing a Piezoelectric Accelerometer Output Using a Charge Amplifier

Processing a Piezoelectric Accelerometer Output Using a Charge Amplifier

Learn about charge amplifiers which are used for charge output conversion of a piezoelectric sensor into a usable voltage signal.


New Audio Devices Target Next-gen Audio System Designs

New Audio Devices Target Next-gen Audio System Designs

Three semiconductor companies have recently announced devices aimed at next-gen audio. These ICs aim to enable engineers to improve the quality and capabilities of their audio system designs.


News May 03, 2022 by Kristijan Nelkovski
What is it About Audio Distortion? Understanding Nonlinearity

What is it About Audio Distortion? Understanding Nonlinearity

Learn about how system nonlinearity creates distortion in audio signals that impacts the sounds we hear. We will examine sine waves, harmonics, and intermodulation distortion.


“MUS-IC” to an Audiophile’s Ears? Lessons on Hi-Fi Electronics From a New DAC

“MUS-IC” to an Audiophile’s Ears? Lessons on Hi-Fi Electronics From a New DAC

MUS-IC, ROHM Semiconductor’s specialized family of audio electronics has a new member: a 32-bit DAC designed for high-res playback. What does this DAC teach us about the tenets of Hi-Fi electronics?


News Apr 19, 2021 by Adrian Gibbons