Datasheet

−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 1.5 2.0
Frequency (x f
S
)
Amplitude (dB)
G028
−120
−100
−80
−60
−40
−20
0
0 1 2 3 4
Frequency (x f
S
)
Amplitude (dB)
G006
−0.4
−0.2
0.0
0.2
0.4
0.6
0.8
1.0
0 10 20 30 40 50 60 70 80 90 100
Samples
Amplitude (FFS)
G017
PCM5121, PCM5122
www.ti.com SLAS763A –AUGUST 2012–REVISED SEPTEMBER 2012
Table 23. Normal x2 Interpolation Filter, Quad Rate
Parameter Condition Value (Typical) Value (Max) Units
Filter Gain Pass Band 0 ……. 0.45f
S
dB
Filter Gain Stop Band 0.55f
S
….. 1.455f
S
dB
Filter Group Delay 20/f
S
S
Figure 41. Normal x2 Interpolation Filter Frequency Figure 42. Normal x2 Interpolation Filter Impulse
Response Response
Figure 43. Normal x2 Interpolation Filter Passband Ripple
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