CS5101A View Datasheet(PDF) - Cirrus Logic

Part Name

Description

Manufacturer

CS5101A

16-bit, 100 kSps / 20 kSps A/D Converters

Cirrus Logic 

CS5101A CS5102A

Figure 17. CS5101A DNL Error Distribution

Figure 18. CS5102A DNL Error Distribution

7.2 FFT Tests and Windowing

In the factory, the CS5101A and CS5102A are

tested using Fast Fourier Transform (FFT) tech-

niques to analyze the converters' dynamic perfor-

mance. A pure sine wave is applied to the device,

and a “time record” of 1024 samples is captured

and processed. The FFT algorithm analyzes the

spectral content of the digital waveform and distrib-

utes its energy among 512 “frequency bins.” As-

suming an ideal sine wave, distribution of energy in

bins outside of the fundamental and DC can only

be due to quantization effects and errors in the

CS5101A and CS5102A.

28

DS45F6

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