CS42L55 Datasheet, PDF (70/73 Pages) Cirrus Logic – Ultra Low Power, Stereo CODEC w/Class H Headphone Amp

9. ADC & DAC DIGITAL FILTERS
0.25
0.2
0.15
0.1
0.05
0
−0.05
−0.1
−0.15
−0.2
−0.25
0
0.05
0.1
0.15
0.2
0.25
0.3
0.35
0.4
0.45
0.5
Frequency (normalized to Fs)
Figure 27. ADC Passband Ripple
0
−10
−20
−30
−40
−50
−60
−70
−80
−90
−100
0.4
0.43
0.46
0.49
0.52
0.55
0.58
0.61
0.64
Frequency (normalized to Fs)
Figure 29. ADC Transition Band
0.03
0.02
0.01
0
−0.01
−0.02
−0.03
−0.04
−0.05
0
0.05
0.1
0.15
0.2
0.25
0.3
0.35
0.4
0.45
frequency (Normalized to Fs)
Figure 31. DAC Passband Ripple
0
−10
−20
−30
−40
−50
−60
0.4
0.42 0.44 0.46 0.48
0.5
0.52 0.54 0.56 0.58
0.6
frequency (Normalized to Fs)
Figure 33. DAC Transition Band
70
CS42L55
0
−10
−20
−30
−40
−50
−60
−70
−80
−90
−100
0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1
Frequency (normalized to Fs)
Figure 28. ADC Stopband Rejection
0
−1
−2
−3
−4
−5
−6
−7
−8
−9
−10
0.45 0.46 0.47 0.48 0.49
0.5
0.51 0.52 0.53 0.54 0.55
Frequency (normalized to Fs)
Figure 30. ADC Transition Band Detail
0
−10
−20
−30
−40
−50
−60
−70
−80
−90
0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1
frequency (Normalized to Fs)
Figure 32. DAC Stopband
0
−10
−20
−30
−40
−50
−60
0.45 0.46 0.47 0.48 0.49
0.5
0.51 0.52 0.53 0.54
frequency (Normalized to Fs)
Figure 34. DAC Transition Band (Detail)
DS773F1