Datasheet

−0.2
−0.15
−0.1
−0.05
0
0.05
0.1
0.15
0.2
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 10 20 30 40 50 60
Samples
Amplitude (FFS)
G005
PCM5121, PCM5122
SLAS763A –AUGUST 2012–REVISED SEPTEMBER 2012 www.ti.com
Table 28. Asymmetric FIR x4 Interpolation Filter, Dual Rate
Parameter Condition Value (Typical) Value (Max) Units
Filter Gain Pass Band 0 ……. 0.40f
S
±0.05 dB
Filter Gain Stop Band 0.72f
S
….. 3.28f
S
–50 dB
Filter Group Delay 1.2t
S
S
Figure 56. Asymmetric FIR x4 Interpolation Filter Figure 57. Asymmetric FIR x4 Interpolation Filter
Frequency Response, Dual Rate Impulse Response, Dual Rate
Figure 58. Asymmetric x4 Interpolation Filter Passband Ripple, Dual Rate
50 Submit Documentation Feedback Copyright © 2012, Texas Instruments Incorporated
Product Folder Links: PCM5121 PCM5122