Latest Amplifiers Articles and Videos

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.

12 hours ago by Jake Hertz

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.

2 days ago by Dr. Steve Arar

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.

May 08, 2022 by Dr. Steve Arar

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.

May 03, 2022 by Kristijan Nelkovski

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.

April 10, 2022 by John Woodgate

“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?

April 19, 2021 by Adrian Gibbons

The Class-D Amplifier Is the Star of Acoustic Vehicle Alerting Systems, ST Suggests

ADAS and AVAS are known to add a number of speakers to an automotive audio system. Class-D amplifiers, however, may be a useful solution for cutting size, costs, heat, and power consumption.

March 05, 2021 by Antonio Anzaldua Jr.

PCB Layout Techniques for Reducing Harmonic Distortion of a Differential ADC Driver

Summary

February 19, 2021 by Dr. Steve Arar

How to Use Decoupling Capacitor Placement to Reduce Harmonic Distortion

Learn how to reduce second harmonic distortion by following some guidelines for placing decoupling capacitors in your PCB layout.

February 12, 2021 by Dr. Steve Arar

Reducing Second Harmonic Distortion with Symmetrical PCB Layout

Need a low-distortion ADC interface? In this article, we'll discuss how to reduce 2nd harmonic distortion by using symmetric PCB layout.

January 18, 2021 by Dr. Steve Arar

“GaN Is Like a Ferrari:” How GaN Is on the Fast Track for 2021

2020 ushered in a wave of GaN transistors in applications from automobiles to audio amplifiers. We talked with GaN Systems CEO Jim Witham to find out why he thinks 2021 could see even more GaN adoption.

December 18, 2020 by Jake Hertz

The History of Vacuum Tubes: An Era Away

While semiconductor devices make possible the lightweight 'gadgets' we enjoy, our electronic world was built on devices that operated on a different scale. Let's take a look at vacuum tubes!

December 11, 2020 by Marie Christiano

Construction of a Guitar Amplifier

This article explains the theory and the construction of the circuit of a 10W practice guitar amplifier.

November 29, 2020 by Teja Sai Marellapudi

How to Design a Precision Current Pump with Op-Amps

This article discusses a voltage-controlled current-source circuit that requires only two op-amps and a handful of resistors.

October 16, 2020 by Robert Keim

Review of the Op-Amp Integrator

In this video, we will learn about the op-amp integrator, which performs mathematical integration and requires nothing more than an op-amp and a few passive components.

October 11, 2020 by Robert Keim

Precisely Capture Servo Motor Position Using a High-Speed Simultaneous Sampling ADC

Autonomous drones and robots utilize small motors. These fast-spinning mini motors require miniature encoders and IC package sizes. This article shows how an optical sinusoidal encoder provides a higher resolution and increased speeds with a 2x3 mm dual simultaneous-sampling SAR-ADC.

August 11, 2020 by Bonnie Baker, Maxim Integrated

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