FILTER RESPONSE
vs
NORMALIZED AUDIO SAMPLING FREQUENCY
10
−10
−30
−50
−70
−90
0
0.5
1
1.5
2
2.5
3
Normalized Audio Sampling Frequency
Figure 3−25. DAC Digital Filter Response 3: USB Mode Only
FILTER RESPONSE
vs
NORMALIZED AUDIO SAMPLING FREQUENCY
0.4
0.3
0.2
0.1
0
−0.1
−0.2
−0.3
−0.4
0
0.05
0.1
0.15
0.2
0.25
0.3
0.35
0.4
0.45
0.5
Normalized Audio Sampling Frequency
Figure 3−26. DAC Digital Filter Ripple 3: USB Mode Only
The delay between the converter is a function of the sample rate. The group delays for the AIC23B are shown in the
following table. Each delay is one LR clock (1/sample rate).
Table 3−1. Group Dealys
FILTER
GROUP DELAY
DAC type 0
DAC type 1
DAC type 2
DAC type 3
ADC type 0
ADC type 1
ADC type 2
ADC type 3
11
18
5
5
12
20
3
6
3−20
TI [ TEXAS INSTRUMENTS ]
