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How to Protect Low-Speed Interfaces and Power Supply Circuits

In this installation of the "Protect Your Ports! Top Design Tips to Keep Your Communications Connected" series, we'll discuss low-speed interfaces and power supply circuits—including audio/video ports, DC power supplies, and more—as well as various methods of how to protect them.

July 11, 2021 by Todd Phillips

An Introduction to Digital Signal Processing

This article provides a general understanding of what DSP is, how it works, and what advantages it can offer. To appreciate the advantages of DSP, let’s first have a look at the conventional method of signal processing, i.e., analog signal processing.

June 30, 2021 by Steve Arar

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.

May 23, 2021 by Steve Arar

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.

April 21, 2021 by Jake Hertz

Protecting Power Over Ethernet (PoE / PoE++) Communications

This article is the first in the "Protect Your Ports! Top Design Tips to Keep Your Communications Connected" series from Littelfuse.

April 14, 2021 by Todd Phillips

What Is the Power Spectrum of Quantization Noise?

Our series on quantization noise begins with a clarification of the framework the author used to determine the scope of his investigation into quantization noise.

March 07, 2021 by Wes Brodsky

Adding a Low-pass Filter to an ADC Model and DAC Modeling

In the final part of this series on modeling ADCs, we discuss one more model and also briefly cover DAC models.

March 02, 2021 by Wes Brodsky

Modeling ADCs Using Intermodulation Polynomial and Effective Number of Bits

In this article, we discuss another methodology of how to model ADCs in system simulations, this time by using the effective number of bits and also adjusting our ADC by introducing a 5th order polynomial to the ideal quantizer input.

February 28, 2021 by Wes Brodsky

Digital or Analog? How Should I and Q Combining and Separation Be Done?

How should I and Q combining be done? Through analog or digital means? This article will discuss the basics of the analog and digital IQ approaches.

February 22, 2021 by Wes Brodsky

6 Causes of MOS Transistor Leakage Current

Leakage current can contribute to power dissipation, especially at lower threshold voltages. Learn about six types of leakage current that can be found in MOS transistors.

February 01, 2021 by Nirbindu Das

Understanding the Leakage Current Components in Short Channel MOS Transistors

This article covers the basics of MOS transistors with a view towards better understanding the leakage current that can occur in such transistors.

January 29, 2021 by Nirbindu Das

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

Transistor Sizing in VLSI Design Using the Linear Delay Model

In this article, we will learn how to find the optimal size of a transistor/logic gate present in a larger circuit to provide the desired performance using the linear delay model.

November 16, 2020 by Tosin Jemilehin

What Is a Graphene Field Effect Transistor (GFET)? Construction, Benefits, and Challenges

Learn all about graphene field-effect transistors or GFETs. We'll cover their construction, as well as the benefits and challenges of designing with them.

November 12, 2020 by Amos Kingatua

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

Non-Idealities in VLSI Circuits

This article discusses VLSI (very-large-scale integration) circuits and the sources of non-idealities that affect MOS transistors.

September 29, 2020 by Tosin Jemilehin

How to Reduce Noise in Low-Voltage Amplifier Designs

This article compares the noise performance of two different amplifiers and optimizes noise performance through the use of passive filtering.

September 29, 2020 by Daniel Miller, Texas Instruments

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

Understanding Types of Lock-In Amplifiers and Related Noise Sources

This article is a general guideline on the main aspects of commercially-available amplifiers.

June 16, 2020 by Ignacio de Mendizábal

Anti-Aliasing Filters: Applying Sampling Theory to ADC Design

This article examines an important aspect of the Nyquist–Shannon sampling theorem and explains its connection to the need for anti-aliasing filters in analog-to-digital conversion.

May 20, 2020 by Robert Keim