Appendix c: adc filter plots, Figure 27. single-speed mode stopband rejection, Figure 28. single-speed mode transition band – Cirrus Logic CS42426 User Manual
Page 64: Figure 30. single-speed mode passband ripple, Figure 31. double-speed mode stopband rejection, Figure 32. double-speed mode transition band
64
DS604F2
CS42426
10.APPENDIX C: ADC FILTER PLOTS
-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 (normalized to Fs)
Am
p
lit
u
d
e (d
B)
-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 (normalized to Fs)
A
m
p
lit
u
d
e (
d
B)
Figure 27. Single-Speed Mode Stopband Rejection
Figure 28. Single-Speed Mode Transition Band
-10
-9
-8
-7
-6
-5
-4
-3
-2
-1
0
0.45
0.46
0.47
0.48
0.49
0.50
0.51
0.52
0.53
0.54
0.55
Frequency (normalized to Fs)
Am
p
lit
u
d
e (
d
B)
-0.10
-0.08
-0.05
-0.03
0.00
0.03
0.05
0.08
0.10
0.00
0.05
0.10
0.15
0.20
0.25
0.30
0.35
0.40
0.45
0.50
Frequency (normalized to Fs)
A
m
pl
it
ude
(dB
)
Figure 29. Single-Speed Mode Transition Band (Detail)
Figure 30. Single-Speed Mode Passband Ripple
-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 (normalized to Fs)
A
m
pl
itude
(dB
)
-140
-130
-120
-110
-100
-90
-80
-70
-60
-50
-40
-30
-20
-10
0
0.40
0.43
0.45
0.48
0.50
0.53
0.55
0.58
0.60
0.63
0.65
0.68
0.70
Frequency (normalized to Fs)
Amplit
u
d
e (
d
B)
Figure 31. Double-Speed Mode Stopband Rejection
Figure 32. Double-Speed Mode Transition Band