參數(shù)資料
型號: AK4538VN
廠商: Asahi Kasei Microsystems Co.,Ltd
元件分類: Codec
英文描述: 16Bit DS CODEC with MIC/HP/SPK-AMP
中文描述: 16位副編解碼器麥克風/惠普/胰腎聯(lián)合移植腺苷
文件頁數(shù): 10/70頁
文件大?。?/td> 485K
代理商: AK4538VN
ASAHI KASEI
[AK4538]
MS0198-E-01
2003/5
- 10 -
FILTER CHARACTERISTICS
(Ta=
10
70
°
C; AVDD, DVDD, PVDD, HVDD=2.4
3.6V; fs=44.1kHz; DEM=OFF)
Parameter
ADC Digital Filter (Decimation LPF):
Passband (Note 22)
3.0dB
Stopband
Passband Ripple
Stopband Attenuation
Group Delay (Note 23)
Group Delay Distortion
ADC Digital Filter (HPF):
Frequency Response
(Note 22)
0.1dB
DAC Digital Filter:
Passband (Note 22)
6.0dB
Stopband
Passband Ripple
Stopband Attenuation
Group Delay (Note 23)
DAC Digital Filter + SCF:
Frequency Response: 0
20.0kHz
BOOST Filter:
(Note 24)
MIN
20Hz
100Hz
1kHz
MID
20Hz
100Hz
1kHz
MAX
20Hz
100Hz
1kHz
Note 22. The passband and stopband frequencies scale with fs (system sampling rate).
For example, ADC is PB=0.454*fs (@-1.0dB), DAC is PB=0.454*fs (@-0.01dB).
Note 23. The calculated delay time caused by digital filtering. This time is from the input of analog signal to setting of the
16-bit data of both channels from the input register to the output register of the ADC. This time includes the group
delay of the HPF. For the DAC, this time is from setting the 16-bit data of both channels from the input register to
the output of analog signal.
Note 24. These frequency responses scale with fs. If a high-level and low frequency signal is input, the analog output clips
to the full-scale.
Symbol
min
typ
max
Units
±
0.1dB
1.0dB
PB
SB
PR
SA
GD
GD
0
-
-
20.0
21.1
17.0
0
17.4
-
-
±
0.1
kHz
kHz
kHz
kHz
dB
dB
1/fs
μ
s
27.0
65
3.0dB
0.5dB
FR
3.4
10
22
Hz
Hz
Hz
±
0.1dB
PB
SB
PR
SA
GD
0
-
22.05
16.8
20.0
-
±
0.06
kHz
kHz
kHz
dB
dB
1/fs
24.1
43
FR
±
0.5
dB
FR
-
-
-
-
-
-
-
-
-
5.74
2.92
0.0
5.94
4.71
0.14
16.04
10.55
0.3
-
-
-
-
-
-
-
-
-
dB
dB
dB
dB
dB
dB
dB
dB
dB
FR
Frequency Response
FR
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