Latest Digital Signal Processing Articles and Videos

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Efficient Orthogonal Variable Optimization Algorithm for Communication Systems

This article discusses an algorithm to find the optimum adjusted point in a two-dimensional space with orthogonal input vectors. The algorithm solves equations for intersecting circles based on measured data points.

December 15, 2020 by Russell Hoppenstein, Texas Instruments

Continuous-Time Sigma-Delta ADCs: the “Alias-Free” ADC

In this article, we'll review the basics of sigma-delta ADCs—and continuous-time sigma-delta ADCS in particular—using a recent CTSD from ADI as an example.

December 10, 2020 by Steve Arar

When Bandwidth is Stretched Thin, Voltage-Controlled Oscillators are a Key Solution

With bandwidth demand at an all-time high, designers may find themselves using voltage-controlled oscillators more frequently in wireless communication applications.

December 09, 2020 by Antonio Anzaldua Jr.

What Is Mixed-Signal IC Design?

This brief gives an overview of the steps in a typical mixed-signal IC design flow.

December 07, 2020 by Jean-Jacques DeLisle

Understanding Digital Filtering with Embedded Microcontrollers

Learn about the widely used methods for filtering and processing data samples in the time domain while taking a closer look at the Dual Biquad IIR engine of the PowerQuad unit in the LPC55S69 MCU. 

December 03, 2020 by Eli Hughes, NXP Semiconductors

How EE Lab Education is Evolving with At-Home Learning

Now that universities are adjusting to the realities of remote learning, how are they accommodating the hands-on aspects of EE lab education?

November 24, 2020 by Tyler Charboneau

How the PowerQuad Co-processor Frees Up CPU Cores in the LPC55S69 MCU

In this article, learn about the PowerQuad co-processor and its role in performing CPU-heavy tasks to allow the Arm Cortex-M33 cores to execute other tasks in the LPC55S69 MCU.

November 19, 2020 by Eli Hughes, NXP Semiconductors

More on Noise-Canceling Headphones: Adaptive Controllers in Active Noise Control Systems

Active noise control is a principle technology in noise-canceling headphones. But there's a nuanced part of the ANC conversation that warrants discussion: adaptive controllers and cancelation paths.

November 17, 2020 by Steve Arar

Introduction to CMOS Image Sensors

In this article, you'll learn the basics of the CMOS image sensor, including its core components, its block diagram, its strengths and weaknesses, and its applications.

November 09, 2020 by Steve Arar

Understanding Active Noise Control Systems—the Tech Underlying Noise-Canceling Headphones

With more people working from home, noise-canceling headphones are ever-more prevalent. What circuitry underlies this popular technology?

November 05, 2020 by Steve Arar

Op-Amps as Low-Pass and High-Pass Active Filters

In this video we will explore a particularly important application of op-amps, namely, the design of high-performance filters that do not require inductors.

October 25, 2020 by Robert Keim

Researchers in Japan Claim New Quantum Circuit Can Compute the Fast Fourier Transform

Looking to build upon pre-existing quantum Fourier transform implementations, researchers in Japan have turned to the Fast Fourier Transform.

October 20, 2020 by Jake Hertz

Designing and Simulating EMC Filters with LTspice

In this article, we will review the different types of noise that are present in a circuit. We will also discuss how to perform an accurate simulation of an EMC filter with LTspice.

October 19, 2020 by Ignacio de Mendizábal

Why Choose High-Precision Voltage Clamping for Low-Voltage Applications?

ALD recently announced a low-power, high-precision clamping solution that targets low-voltage electronic systems. Why do we turn to voltage clamping in such systems in the first place?

October 09, 2020 by Steve Arar

How Will 5G’s High-Frequency Band Affect Signal Integrity?

5G will operate at frequencies significantly faster than those of 4G, forcing PCB designers to rethink how their boards are designed and manufactured.

October 05, 2020 by Jake Hertz

A New Dual RGB-IR Sensor Put to Use in Endoscopes for Cancer Detection

OmniVision claims this small form factor RGB-IR sensor may significantly advance medical imaging.

October 01, 2020 by Nicholas St. John

What is DrMOS—the IC Powering Next-Gen Processors?

Integrated powertrain devices go back at least as far as 2004 when Intel wrote the specification for DrMOS, a high-efficiency high-current IC for powering next-gen processors.

September 30, 2020 by Adrian Gibbons

A Closer Look at MARSIS, the Radar that Discovered Lakes on Mars

This week, the European Space Agency discovered underground lakes of liquid water on Mars. What circuit-level hardware made this discovery possible?

September 30, 2020 by Jake Hertz

Transimpedance Amplifier: Op-Amp-Based Current-to-Voltage Signal Converter

In this video we’ll study an op-amp-based current-to-voltage converter. This widely used circuit is a simple and effective means of converting the output of a current source into a typical voltage signal.

September 27, 2020 by Robert Keim

What Is the Sinc Function and Why Is It Important in Electrical Engineering?

This Frequent Engineering Question gives a quick overview of a mathematical function that appears frequently in digital signal processing.

September 23, 2020 by Robert Keim