CS4245 Datasheet, PDF (52/54 Pages) Cirrus Logic – 105 dB, 24-Bit, 192 kHz Streo Sudio CODEC

CS4245
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 33. ADC Single Speed Stopband Rejection Figure 34. 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 35. ADC Single Speed Transition Band (Detail) Figure 36. 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 37. ADC Double Speed Stopband Rejection Figure 38. ADC Double Speed Stopband Rejection
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