Reading and Using Fast Fourier Transforms (FFT)
When you’re trying to solve a signal integrity problem, the best of all worlds is to have more than one tool to examine the behavior of a system. If there is an A/D converter in the signal path, there are three fundamental issues that can be examined when assessing the circuit’s performance. All three of these methods evaluate the conversion process as well as its interaction with other portions of the circuit. These three areas of concern encompass the use of frequency analysis (FFTs), time analysis, and DC analysis techniques.
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