Latest Audio Technical Articles

This technical brief describes channel-length modulation and how it affects MOSFET current–voltage characteristics.

This technical brief describes channel-length modulation and how it affects MOSFET current–voltage characteristics.

ADCs (analog-to-digital converters) can be described as either Nyquist-rate or oversampled converters. The Delta-Sigma…

ADCs (analog-to-digital converters) can be described as either Nyquist-rate or oversampled converters. The Delta-Sigma ADC belongs to the oversampled family of converters. It relies upon oversampling and noise shaping to achieve high-resolution conversions.

Start to get acquainted with the new D2000 microcontroller development board by exploring the GPIO and PWM.

Start to get acquainted with the new D2000 microcontroller development board by exploring the GPIO and PWM.

In this article, we’ll look at the equation for differential gain and use LTspice to find the value of the…

In this article, we’ll look at the equation for differential gain and use LTspice to find the value of the channel-length-modulation parameter referred to as lambda (λ).

In this article, we’ll discuss MOSFET small-signal output resistance as we make our way toward predicting the gain of…

In this article, we’ll discuss MOSFET small-signal output resistance as we make our way toward predicting the gain of the actively loaded differential pair.

Piezoelectric materials change shape when exposed to electric fields. By causing them to change shape at specific times,…

Piezoelectric materials change shape when exposed to electric fields. By causing them to change shape at specific times, we can use them to create sound.

In this article, we’ll discuss two benefits of using an active load: improved biasing conditions and…

In this article, we’ll discuss two benefits of using an active load: improved biasing conditions and differential-to-single-ended conversion.

Learn about a fairly simple yet highly beneficial modification to the drain-resistor-based version of the MOSFET…

Learn about a fairly simple yet highly beneficial modification to the drain-resistor-based version of the MOSFET differential pair.

In this article, we’ll examine the most straightforward version of this foundational integrated-circuit amplifier topology.

In this article, we’ll examine the most straightforward version of this foundational integrated-circuit amplifier topology.

This project details the process by which AC-powered speaker sets can typically be converted to battery power. I'll…

This project details the process by which AC-powered speaker sets can typically be converted to battery power. I'll detail my own projects and provide advice for converting almost any set of speakers.

Learn about a straightforward version of a circuit that is essential in the design of analog integrated circuits.

Learn about a straightforward version of a circuit that is essential in the design of analog integrated circuits.

This article describes the bridge-amplifier configuration and explains why it’s especially handy when you don’t have…

This article describes the bridge-amplifier configuration and explains why it’s especially handy when you don’t have a negative voltage supply.

Combine the Si4844-A10 analog-tuned radio receiver with an Arduino to make a full-featured multiband radio.

Combine the Si4844-A10 analog-tuned radio receiver with an Arduino to make a full-featured multiband radio.

In this article, we’ll compare active and passive filters and look at some common second-order active topologies.

In this article, we’ll compare active and passive filters and look at some common second-order active topologies.

Part Three in this three-article series shows you how to generate values for a discrete sinusoid and continuously convert…

Part Three in this three-article series shows you how to generate values for a discrete sinusoid and continuously convert this data into an analog signal without overburdening the CPU.

In this article, we will discuss some characteristics of the ideal diode. We'll also learn how to analyze circuits that…

In this article, we will discuss some characteristics of the ideal diode. We'll also learn how to analyze circuits that contain more than one ideal diode in conjunction with resistors and DC power sources.

Part Two in this three-article series explores the SAM4S DAC. We’ll look at hardware configuration, electrical…

Part Two in this three-article series explores the SAM4S DAC. We’ll look at hardware configuration, electrical characteristics, and the application programming interface.

Mentioned in the previous article, the first of two most commonly used operational amplifiers, the inverting…

Mentioned in the previous article, the first of two most commonly used operational amplifiers, the inverting configuration is heavily used in audio mixers or digital-to-audio converters. In this article, we will discuss the second amplifier configuration, known as the non-inverting amplifier.

Part One in this three-article series focuses on using the SAM4S timer/counter peripheral to precisely control the…

Part One in this three-article series focuses on using the SAM4S timer/counter peripheral to precisely control the DAC’s sampling rate.