参数资料
型号: TAS3002
厂商: TEXAS INSTRUMENTS INC
元件分类: 消费家电
英文描述: SPECIALTY CONSUMER CIRCUIT, PQFP48
封装: QFP-48
文件页数: 41/54页
文件大小: 266K
代理商: TAS3002
82
8.4
ADC Digital Filter
TA = 25°C, AVDD = 3.3 V, DVDD = 3.3 V, fS = 48 kHz, 20-bit I2S mode
All terms characterized by frequency are scaled with the chosen sampling frequency, fS. See Figure 81 through
Figure 84 for performance curves of the ADC digital filter.
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
ADC decimation filter (LPF)
Pass band
0.0
20.0
kHz
ADC decimation filter (LPF)
Pass band ripple
±0.01
dB
Stop band
24.1
kHz
Stop band attenuation
80
dB
Group delay
720
s
ADC high-pass filter (HPF)
Pass band (3 dB)
0.87
Hz
ADC high-pass filter (HPF)
Deviation from linear phase
20 Hz to 20 kHz
1.23
degrees
150
200
Amplitude
dB
50
0
50
100
f Frequency Hz
02 fs
4 fs
6 fs
8 fs
10 fs
12 fs
Figure 81. ADC Digital Filter Characteristics
60
100
Amplitude
dB
40
20
0
80
0
f Frequency Hz
0.2 fs
0.4 fs
0.6 fs
0.8 fs
1 fs
Figure 82. ADC Digital Filter Stop-Band Characteristics
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