PCM9211
www.ti.com
SBAS495 –JUNE 2010
TYPICAL CHARACTERISTICS: ADC (continued)
All specifications at TA = +25°C, VCCAD = 5 V, VDD = 3.3 V, fS = 48 kHz, SCK = 512fS, and 24-bit data, unless otherwise noted.
ADC OUTPUT SPECTRUM
OUTPUT SPECTRUM
(–1 dB, N = 32,768)
OUTPUT SPECTRUM
(–60 dB, N = 32,768)
0
-20
0
-20
-40
-40
-60
-60
-80
-80
-100
-120
-140
-100
-120
-140
0
5
10
15
20
0
5
10
15
20
Frequency (kHz)
Frequency (kHz)
Figure 5.
Figure 6.
ADC INTERNAL FILTER
DECIMATION FILTER
STOP BAND CHARACTERISTIC
DECIMATION FILTER
PASSBAND CHARACTERISTIC
0
-20
0.1
0
-40
-0.1
-0.2
-0.3
-0.4
-0.5
-60
-80
-100
-120
-140
-160
0
8
16
24
32
0
0.1
0.2
0.3
0.4
0.5
Normalized Frequency (x fS)
Normalized Frequency (x fS)
Figure 7.
Figure 8.
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