cs5331a Cirrus Logic, Inc., cs5331a Datasheet - Page 13

• Manufacturer Part Number: cs5331a
• Description: 8-pin, Stereo A/d Converter For Digital Audio
• Manufacturer: Cirrus Logic, Inc.

DS138F5
3.1.11 Digital Filter
Figure 5. CS5330A/31A Digital Filter Stopband Rejection
-0.01
-0.02
-0.03
-0.04
-0.05
0.05
0.04
0.03
0.02
0.01
0.00
Figure 7. CS5330A/31A Digital Filter Passband Ripple
-100
-110
-120
-10
-20
-30
-40
-50
-60
-70
-80
-90
0
0
0.0
Figures 5
response scales linearly with sample rate. The x-axis has been normalized to Fs, and can be scaled by
multiplying the x-axis by the system sample rate, i.e. 48 kHz.
0.1
0.1
0.2
Normalized Input Frequency
through
0.3
Normalized Input Frequency
0.2
0.4
8
0.5
show the attenuation characteristics of the digital filter included in the ADC. The filter
0.3
0.6
0.7
0.4
0.8
0.9
0.5
1.0
-100.0
-10.0
-20.0
-30.0
-40.0
-50.0
-60.0
-70.0
-80.0
-90.0
0.0
Figure 8. CS5330A/31A Digital Filter Transition Band
Figure 6. CS5330A/31A Digital Filter Transition Band
0.40
-10
-2
-4
-6
-8
2
0
.46
.47
0.45
Normalized Input Frequency
.48
Normalized Input Frequency
0.50
.49
.50
0.60
CS5330A/31A
.51
.52
0.65
.53
0.70
13
.54