EDN

Signal Chain Basics #160: Making sense of coherent and noncoherent sampling in data-converter testing

Bad Fast Fourier Transfer (FFT) data captures can cause you to misunderstand the true performance of your analog-to-digital converter (ADC). Some engineers like to coherently sample and capture data ...
Electronic Design

Choose The Right FFT Window Function When Evaluating Precision ADCs

When evaluating the dynamic performance of precision analog-to-digital converters (ADCs) using fast Fourier transform (FFT) analysis, coherent sampling typically is used to accurately measure the ...
Science Daily

Leaner Fourier transforms: New algorithm can separate signals into their individual frequencies using a minimal number of samples

A new algorithm performs Fourier transforms using a minimal number of samples. The fast Fourier transform, one of the most important algorithms of the 20th century, revolutionized signal processing.
Electronic Design

Noise Spectral Density: A “New” ADC Metric?

Over the past decades, the high-speed analog-to-digital converter (ADC) performance metric that mattered to most has changed, albeit slowly. Primarily as a result of signal acquisition systems’ ever ...
EDN

12-bit PCIe card runs FFT application

Keysight has launched an improved FFT option for its U5303A, a PCIe 12-bit data-acquisition card that sports two channels and sampling rates from 1 Gsample/s to 3.2 Gsamples/s. Intended for astronomy, ...