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
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
PCM5100, PCM5101, PCM5102
www.ti.com SLAS764B –MAY 2011–REVISED SEPTEMBER 2012
The Normal x4/x2/x1(bypass) Interpolation filter is programmed in 256 cycles in 1 sample time (t
S
) for sample
rates from 8kHz to 384kHz.
Table 10. Normal x4 Interpolation Filter
Parameter Condition Value (Typ) Value (Max) Units
Filter Gain Pass Band 0 ……. 0.45f
S
±0.02 dB
Filter Gain Stop Band 0.55f
S
….. 7.455f
S
–60 dB
Filter Group Delay 22t
S
s
Figure 19. Normal x4 Interpolation Filter Frequency Figure 20. Normal x4 Interpolation Filter Impulse
Response Response
Figure 21. Normal x4 Interpolation Filter Passband Ripple
Copyright © 2011–2012, Texas Instruments Incorporated Submit Documentation Feedback 17
Product Folder Links: PCM5100 PCM5101 PCM5102