Figure 17. quad-speed stopband rejection, Figure 18. quad-speed transition band, Figure 19. quad-speed transition band – Cirrus Logic CS4397 User Manual
Page 30: Figure 20. quad-speed frequency response, Figure 21. 8x interpolator stop band, Figure 22. 8x interpolator transition band, Figure 23. 8x interpolator transition band, Figure 24. 8x interpolator frequency response, Cs4397
CS4397
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DS333F1
-160
-140
-120
-100
-80
-60
-40
-20
0
0.4
0.45
0.5
0.55
0.6
0.65
0.7
0.75
0.8
0.85
0.9
0.95
1
Frequency (normalized to Fs)
A
m
pli
tude
dB
-160
-140
-120
-100
-80
-60
-40
-20
0
0.5
0.52
0.54
0.56
0.58
0.6
0.62
0.64
0.66
0.68
0.7
Frequency (normalized to Fs)
A
m
pli
tude
dB
Figure 17. Quad-speed Stopband Rejection
Figure 18. Quad-speed Transition Band
-0.1
-0.08
-0.06
-0.04
-0.02
0
0.02
0.04
0.06
0.08
0.1
0
0.05
0.1
0.15
0.2
0.25
0.3
0.35
0.4
Frequency (normalized to Fs)
A
m
pli
tude
dB
-10
-9
-8
-7
-6
-5
-4
-3
-2
-1
0
0.35
0.37
0.39
0.41
0.43
0.45
0.47
0.49
0.51
0.53
Frequency (normalized to Fs)
A
m
pli
tude
dB
Figure 19. Quad-speed Transition Band
Figure 20. Quad-speed Frequency Response
Figure 21. 8x Interpolator Stop Band
Figure 22. 8x Interpolator Transition Band
-140
-120
-100
-80
-60
-40
-20
0
0.6
0.7
0.8
0.9
1
1.1
1.2
1.3
1.4
1.5
1.6
1.7
1.8
1.9
2
Frequency (normalized to Fs)
A
m
pl
it
ud
e
d
B
.3 .4 .5 .6 .7 .8 .9 1.0
-120
-100
-80
-60
-40
-20
0
20
0.6
0.7
0.8
0.9
1
1.1
1.2
1.3
1.4
1.5
1.6
Frequency (normalized to Fs)
A
m
pl
it
ude
dB
2.4 2.8 3.2 3.6 4.0 4.4 4.8 5.2 5.6 6.0 6.4
.3 .4 .5 .6 .7 .8
-0.1
-0.08
-0.06
-0.04
-0.02
0
0.02
0.04
0.06
0.08
0.1
0
0.1
0.2
0.3
0.4
0.5
0.6
Frequency (normalized to Fs)
A
m
pl
it
ude
dB
0 .05 .1 1.5 .2 .25 .3
-10
-9
-8
-7
-6
-5
-4
-3
-2
-1
0
0.5
0.6
0.7
0.8
0.9
1
1.1
1.2
Frequency (normalized to Fs)
A
m
pl
it
ude
dB
2 2.4 2.8 3.2 3.6 4.0 4.4 4.8
.25 .3 3.5 4.0 4.5 5.0 5.5 6.0
Figure 23. 8x Interpolator Transition Band
Figure 24. 8x Interpolator Frequency Response