CS4265 Datasheet, PDF (47/53 Pages) Cirrus Logic – 105 dB, 24-Bit, 192 kHz Stereo Audio CODEC

CS4265
APPENDIX B: ADC FILTER PLOTS
0
-10
-20
-30
-40
-50
-60
-70
-80
-90
-100
-110
-120
-130
-140
0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0
Frequency (norm alized to Fs)
0
-10
-20
-30
-40
-50
-60
-70
-80
-90
-100
-110
-120
-130
-140
0.40 0.42 0.44 0.46 0.48 0.50 0.52 0.54 0.56 0.58 0.60
Frequency (norm alized to Fs)
Figure 30. ADC Single Speed Stopband Rejection Figure 31. ADC Single Speed 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 (norm alized to Fs)
0 .10
0 .0 8
0 .0 6
0 .0 4
0 .0 2
0 .0 0
- 0 .0 2
- 0 .0 4
- 0 .0 6
- 0 .0 8
- 0 .10
0
0.05 0.1 0.15 0.2 0.25 0.3 0.35 0.4 0.45 0.5
Frequency (norm alized to Fs)
Figure 32. ADC Single Speed Transition Band (Detail) Figure 33. ADC Single Speed Passband Ripple
0
-10
-20
-30
-40
-50
-60
-70
-80
-90
-100
-110
-120
-130
-140
0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0
Frequency (norm alized to Fs)
0
-10
-20
-30
-40
-50
-60
-70
-80
-90
-100
-110
-120
-130
-140
0.40 0.42 0.44 0.46 0.48 0.50 0.52 0.54 0.56 0.58 0.60
Frequency (norm alized to Fs)
Figure 34. ADC Double Speed Stopband Rejection Figure 35. ADC Double Speed Stopband Rejection
DS657A2
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