- Texas AIP Consumer Audio User's Guide

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5.4.4 Amplitude Versus Frequency Performance
5.4.4.1 A/D Spectrum
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Amplitude(dB)
AMPLITUDEvsFREQUENCY
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Frequency(kHz)
BPZ(ZeroData)Input
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Amplitude(dB)
AMPLITUDEvsFREQUENCY
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Frequency(kHz)
-60dBInput
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Amplitude(dB)
AMPLITUDEvsFREQUENCY
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Frequency(kHz)
-1dBInput
Measurements for Dynamic Characteristics
Measurement path: 17.Line Input (AIN3L/AIN3R)
csv file: 17_ADC_Line_Input.csv
Note that an unweighted filter and an AES17 bandwidth of 22Hz to 20kHz should be set to obtain precise
spectrum results.
Figure 5-8. A/D Amplitude vs Frequency Figure 5-9. A/D Amplitude vs Frequency
Result: BPZ (Zero Data) Input Result: –60dB Input
Figure 5-10. A/D Amplitude vs Frequency
Result: –1dB Input
See Appendix A : Line Input (AIN3L/AIN3R) for a signal flow block diagram.
SBAU127 – July 2007 Evaluation and Measurements 59
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