Texas Instruments PCM5142 Evaluation Module PCM5142EVM-U PCM5142EVM-U 데이터 시트
제품 코드
PCM5142EVM-U
−0.05
−0.04
−0.03
−0.02
−0.01
0.00
0.01
0.02
0.03
0.04
0.05
0.0
0.5
1.0
Frequency (x f
S
)
Amplitude (dB)
G031
−120
−100
−80
−60
−40
−20
0
0
1
2
3
4
Frequency (x f
S
)
Amplitude (dB)
G009
−0.4
−0.2
0.0
0.2
0.4
0.6
0.8
1.0
0
20
40
60
80
100
120
140
160
Samples
Amplitude (FFS)
G020
SLAS759A – AUGUST 2012 – REVISED SEPTEMBER 2012
Table 22. Normal x4 Interpolation Filter, Dual Rate
Parameter
Condition
Value (Typical)
Value (Max)
Units
Filter Gain Pass Band
0 ……. 0.45f
S
±0.01
dB
Filter Gain Stop Band
0.55f
S
….. 3.455f
S
–60
dB
Filter Group Delay
20t
S
S
Figure 38. Normal x4 Interpolation Filter Frequency
Figure 39. Normal x4 Interpolation Filter Impulse
Response
Response
Figure 40. Normal x4 Interpolation Filter Passband Ripple
44
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