Datasheet

HIGH-PASS FILTER
Normalized Frequency [× f
S
/1000 Hz]
−100
−90
−80
−70
−60
−50
−40
−30
−20
−10
0
0.00 0.05 0.10 0.15 0.20 0.25 0.30 0.35 0.40
Amplitude − dB
G014
Normalized Frequency [× f
S
/1000 Hz]
−1.0
−0.8
−0.6
−0.4
−0.2
0.0
0.2
0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0
Amplitude − dB
G015
ANTIALIASING FILTER
−50
−40
−30
−20
−10
0
f − Frequency − Hz
Amplitude − dB
1 10 100 10M1k 10k
G016
470 pF
1000 pF
100k 1M
−1.0
−0.8
−0.6
−0.4
−0.2
0.0
0.2
f − Frequency − Hz
Amplitude − dB
1 10 100 100k1k 10k
G017
470 pF
1000 pF
PCM1800
www.ti.com ............................................................................................................................................... SBAS071B – OCTOBER 2000 – REVISED AUGUST 2008
TYPICAL PERFORMANCE CURVES FOR INTERNAL FILTERS (continued)
All specifications at T
A
= 25 ° C, V
DD
= V
CC
= 5 V, slave mode, f
S
= 44.1 kHz, 20-bit input data, and SYSCLK = 384 f
S
, unless
otherwise noted
otherwise noted
HIGH-PASS FILTER RESPONSE HIGH-PASS FILTER RESPONSE
Figure 14. Figure 15.
ANTIALIASING FILTER OVERALL ANTIALIASING FILTER PASS-BAND
FREQUENCY RESPONSE (C
EXT
= 470 pF, 1000 pF) FREQUENCY RESPONSE (C
EXT
= 470 pF, 1000 pF)
Figure 16. Figure 17.
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