參數(shù)資料
型號: TAS3004PFB
廠商: TEXAS INSTRUMENTS INC
元件分類: 消費家電
英文描述: SPECIALTY CONSUMER CIRCUIT, PQFP48
封裝: GREEN, PLASTIC, TQFP-48
文件頁數(shù): 53/84頁
文件大?。?/td> 671K
代理商: TAS3004PFB
8–2
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 8–1 through
Figure 8–4 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
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
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 8–1. 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 8–2. ADC Digital Filter Stopband Characteristics
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