Cirrus Logic CS4270 - Manual (Page 40)

40 DS686F1
CS4270
Figure 35. ADC Single-Speed Stopband Rejection Figure 36. ADC Single-Speed Stopband (detail)
-140
-130
-120
-110
-100
-90
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-70
-60
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-40
-30
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-10
0
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)
A
m
pl
it
ude (dB
)
-140
-130
-120
-110
-100
-90
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-60
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-40
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0
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)
A
m
pl
it
ude (dB
)
Figure 37. ADC Single-Speed Transition Band (detail) Figure 38. ADC Single-Speed Passband Ripple
-10
-9
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-3
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-1
0
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)
A
m
pl
it
ude (dB
)
-0.10
-0.08
-0.06
-0.04
-0.02
0.00
0.02
0.04
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0.08
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)
A
m
pl
it
ude (dB
)
Figure 39. ADC Double-Speed Stopband Rejection Figure 40. ADC Double-Speed Stopband (detail)
-140
-130
-120
-110
-100
-90
-80
-70
-60
-50
-40
-30
-20
-10
0
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)
A
m
pl
it
ude (dB
)
-140
-130
-120
-110
-100
-90
-80
-70
-60
-50
-40
-30
-20
-10
0
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)
A
m
pl
it
ude (dB
)