PCM1804_14 Datasheet, PDF (14/36 Pages) Texas Instruments – STEREO A/D CONVERTER

PCM1804
SLES022C – DECEMBER 2001 – REVISED OCTOBER 2007
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TYPICAL PERFORMANCE CURVES OF INTERNAL FILTER (continued)
LINEAR PHASE ANTIALIAS DIGITAL FILTER FREQUENCY RESPONSE - Dual-Rate
OVERALL CHARACTERISTICS
FOR DUAL-RATE FILTER
50
f_S = 96 kHz
0
−50
−100
−150
−200
0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0
Normalized Frequency − y f_S
G020
Figure 20.
PASS-BAND RIPPLE CHARACTERISTICS
FOR DUAL-RATE FILTER
0.02
f_S = 96 kHz
0.00
−0.02
−0.04
−0.06
−0.08
−0.10
0.0
0.1 0.2 0.3 0.4 0.5
Normalized Frequency − y f_S
Figure 22.
0.6
G022
STOP-BAND ATTENUATION CHARACTERISTICS
FOR DUAL-RATE FILTER
0
−10
f_S = 96 kHz
−20
−30
−40
−50
−60
−70
−80
−90
−100
−110
−120
−130
−140
−150
0.00
0.25
0.50
0.75
1.00
Normalized Frequency − y fS
G021
Figure 21.
TRANSIENT BAND CHARACTERISTICS
FOR DUAL-RATE FILTER
0
f_S = 96 kHz
−1
−2
−3
−4
−5
−6.02 dB at 0.5 f_S
−6
−7
−8
−9
−10
0.45
0.47
0.49
0.51
0.53
Normalized Frequency − y f_S
Figure 23.
0.55
G023
14
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