Latest Spectral Analysis Articles and Videos

Categories

Low-Noise Voltage References: Understanding the Noise Performance of a Voltage Reference IC

Working with a low noise voltage reference? Learn more about noise specifications and relevant voltage reference ICs.

July 01, 2019 by Dr. Steve Arar

Quantization Noise and Amplitude Quantization Error in ADCs

Learn the methods and applications of modeling the quantization error of an ADC using a noise source.

April 22, 2019 by Dr. Steve Arar

Understanding Amplitude Quantization Error for ADCs

This article examines the quantization error of an analog-to-digital converter.

April 17, 2019 by Dr. Steve Arar

Resolving the Signal Part 12: Reducing the Effects of Power-Supply Noise using Delta-Sigma ADCs

In part 12 of Resolving the Signal, we look at a power-supply noise design example to discuss which supplies are most critical when trying to increase a system's PSR. From that example, we offer best practices to maintain low power-supply noise and debugging tips for a system's overall noise performance.

January 29, 2019 by Bryan Lizon, Texas Instruments

Resolving the Signal Part 10: How Clock Signals Affect Precision ADCs

Part 10 of the Resolving the Signal series covers how clocks affect precision ADCs, touching on clock jitter, clock intermodulation and best PCB layout practices for clocking.

November 06, 2018 by Bryan Lizon, Texas Instruments

Intro Software Walkthrough: Fast Fourier Transforms and the Xilinx FFT IP Core

This article will explain some of the most important settings and design parameters for the Xilinx FFT IP core and function as a basic walkthrough of the Fast Fourier Transform interface.

October 17, 2018 by Dr. Steve Arar

Audio Processing in Scilab: How to Implement Spectrum Subtraction

This article discusses a technique in which frequency-domain subtraction is used to selectively suppress the noise components in an audio signal.

September 20, 2018 by Robert Keim

How to Use Scilab to Analyze Frequency-Modulated RF Signals

Computing a discrete Fourier transform can help you to analyze the ways in which RF modulation affects the spectrum of a carrier signal.

September 11, 2018 by Robert Keim

How to Use Scilab to Analyze Amplitude-Modulated RF Signals

Scilab’s FFT functionality can help you understand the frequency-domain effects of RF modulation techniques.

September 06, 2018 by Robert Keim

How to Perform Frequency-Domain Analysis with Scilab

In this article we’ll work with sinusoidal signals in the frequency domain using Scilab’s fast Fourier transform (FFT) functionality.

September 04, 2018 by Robert Keim

Resolving the Signal Part 7: The Effects of Amplifier Noise on Delta-Sigma ADCs

This 12-part article series focuses on the impact of noise in delta-sigma ADCs. Part 7 shows how to analyze different amplifiers' effect on the noise of the same ADC.

July 03, 2018 by Bryan Lizon, Texas Instruments

Basics of Digital Down-Conversion in DSP

This article discusses digital down-conversion which is a digital-signal-processing technique widely used in digital radio receivers.

June 04, 2018 by Dr. Steve Arar

How to Low-Pass Filter a Square Wave

This article, part of AAC’s Analog Circuit Collection, presents a circuit that is a good choice when you need to remove high-frequency noise from a digital signal.

March 07, 2018 by Robert Keim

Resolving the Signal: Introduction to Noise in Delta-Sigma ADCs Part 2

In part 2 of this series, I'll continue the fundamental ADC noise discussion by covering how to measure ADC noise, noise specifications in ADC data sheets, and absolute versus relative noise parameters.

February 13, 2018 by Bryan Lizon, Texas Instruments

Choosing the Most Suitable MEMS Accelerometer for Your Application: Part 2

In part 2 of this article, we will focus on key specifications and features in the context of wearable devices, condition monitoring, and IoT applications.

December 22, 2017 by Chris Murphy, Analog Devices

High-Speed Waveform Generation with an MCU and a DAC

In this article, we’ll evaluate different firmware strategies in our pursuit of maximum-frequency analog signal generation.

December 08, 2017 by Robert Keim

Fixed-Point Representation: The Q Format and Addition Examples

Fixed-point representation allows us to use fractional numbers on low-cost integer hardware.

November 30, 2017 by Dr. Steve Arar

Learn about the Overlap-Add Method: Linear Filtering Based on the Discrete Fourier Transform

The overlap-add method allows us to use the DFT-based method when calculating the convolution of very long sequences.

October 25, 2017 by Dr. Steve Arar

Ultrawideband DPD: The Rewards and Challenges of Implementation in Cable Distribution Systems

This article looks at new technologies regarding the existing cable network, in particular, power amplifier digital predistortion.

October 24, 2017 by Patrick Pratt, Analog Devices

Linear Filtering Based on the Discrete Fourier Transform

The DFT provides an efficient way to calculate the time-domain convolution of two signals.

October 19, 2017 by Dr. Steve Arar