Texas Instruments PCM5122 Evaluation Module PCM5122EVM-U PCM5122EVM-U Datenbogen
Produktcode
PCM5122EVM-U
−0.002
−0.0015
−0.001
−0.0005
0
0.0005
0.001
0.0015
0.002
0
0.5
1
Frequency (
×
f
S
)
Amplitude (dB)
G008
−120
−100
−80
−60
−40
−20
0
0
1
2
3
4
Frequency (
×
f
S
)
Amplitude (dB)
G002
−0.4
−0.2
0
0.2
0.4
0.6
0.8
1
0
50
100
150
200
250
300
Samples
Amplitude (FFS)
G005
SLAS759A – AUGUST 2012 – REVISED SEPTEMBER 2012
Table 31. High-Attentuation x4 Interpolation Filter, Dual Rate
Parameter
Condition
Value (Typical)
Value (Max)
Units
Filter Gain Pass Band
0 ……. 0.45f
S
±0.0005
dB
Filter Gain Stop Band
0.55f
S
….. 3.455f
S
–100
dB
Filter Group Delay
33.7t
S
S
Figure 65. High-Attentuation x4 Interpolation Filter
Figure 66. High-Attentuation x4 Interpolation Filter
Frequency Response, Dual Rate
Impulse Response, Dual Rate
Figure 67. High-Attentuation x4 Interpolation Filter Passband Ripple, Dual Rate
Copyright © 2012, Texas Instruments Incorporated
53
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