Adc & dac digital filters, Figure 27. adc passband ripple, Figure 28. adc stopband rejection – Cirrus Logic CS42L55 User Manual
Page 70: Figure 29. adc transition band, Figure 30. adc transition band detail, Figure 31. dac passband ripple, Figure 32. dac stopband, Figure 33. dac transition band, Figure 34. dac transition band (detail), Plots
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DS773F1
CS42L55
9. ADC & DAC DIGITAL FILTERS
0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1
−100
−90
−80
−70
−60
−50
−40
−30
−20
−10
0
Frequency (normalized to Fs)
Amplitude dB
0
0.05
0.1
0.15
0.2
0.25
0.3
0.35
0.4
0.45
0.5
−0.25
−0.2
−0.15
−0.1
−0.05
0
0.05
0.1
0.15
0.2
0.25
Frequency (normalized to Fs)
Amplitude dB
Figure 27. ADC Passband Ripple
Figure 28. ADC Stopband Rejection
0.4
0.43
0.46
0.49
0.52
0.55
0.58
0.61
0.64
−100
−90
−80
−70
−60
−50
−40
−30
−20
−10
0
Frequency (normalized to Fs)
Amplitude dB
0.45
0.46
0.47
0.48
0.49
0.5
0.51
0.52
0.53
0.54
0.55
−10
−9
−8
−7
−6
−5
−4
−3
−2
−1
0
Frequency (normalized to Fs)
Amplitude dB
Figure 29. ADC Transition Band
Figure 30. ADC Transition Band Detail
0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1
−90
−80
−70
−60
−50
−40
−30
−20
−10
0
frequency (Normalized to Fs)
Magnitude (dB)
Figure 31. DAC Passband Ripple
Figure 32. DAC Stopband
0
0.05
0.1
0.15
0.2
0.25
0.3
0.35
0.4
0.45
−0.05
−0.04
−0.03
−0.02
−0.01
0
0.01
0.02
0.03
frequency (Normalized to Fs)
Magnitude (dB)
Figure 33. DAC Transition Band
Figure 34. DAC Transition Band (Detail)
0.4
0.42
0.44
0.46
0.48
0.5
0.52
0.54
0.56
0.58
0.6
−60
−50
−40
−30
−20
−10
0
frequency (Normalized to Fs)
Magnitude (dB)
0.45
0.46
0.47
0.48
0.49
0.5
0.51
0.52
0.53
0.54
−60
−50
−40
−30
−20
−10
0
frequency (Normalized to Fs)
Magnitude (dB)