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參數(shù)資料
| 型號： | AK4520A-VF |
| 廠商： | Asahi Kasei Microsystems Co.,Ltd |
| 英文描述： | 100dB 20Bit Stereo ADC & DAC |
| 中文描述： | 100dB的20位立體聲ADC |
| 文件頁數(shù)： | 6/19頁 |
| 文件大?。?/td> | 198K |
| 代理商： | AK4520A-VF |
ASAHI KASEI
[AK4520A]
0163-E-00
1997/3
- 6 -
Parameter
min
typ
max
Units
Power supply Current VA=VD=5V
Analog
VA
AD
DA
Digital
VD
(Note 8 )
DA
VA+VD
Power down PWAD="L",PWDA="L"
Note:8 The typical supply current of VD drops to AD+DA=5.5mA, AD=3.5mA, DA=2mA at 3.0V supply
voltage.
AD+DA
PWAD="H",PWDA="H"
PWAD="H",PWDA="L"
PWAD="L",PWDA="H"
PWAD="H",PWDA="H"
PWAD="H",PWDA="L"
PWAD="L",PWDA="H"
41
17
25
10
6
4
0.2
62
26
38
15
9
6
0.4
mA
mA
mA
mA
mA
mA
mA
AD+DA
AD
FILTER CHARACTERISTICS
(Ta=25
°
C; VA,VD=2.7
～
5.5V; fs=44.1kHz; DEM0="1", DEM1="0")
Parameter
ADC Digital Filter(Decimation LPF):
Passband (Note 9 )
-0.005dB
-0.02dB
-0.06dB
-6.0dB
Stopband
Passband Ripple
Stopband Attenuation
Group Delay (Note 10 )
Group Delay Distortion
ADC Digital Filter(HPF):
Frequency Response (Note 9 ) -3dB
-0.5dB
-0.1dB
DAC Digital Filter:
Passband (Note 9 )
-0.06dB
-6.0dB
Stopband
Passband Ripple
Stopband Attenuation
Group Delay (Note 10 )
DAC Digital Filter+Analog Filter:
Frequency Response 0
～
20.0kHz
Notes: 9. The Passband and stopband frequencies scale with fs. For example, 20.02kHz at -0.02dB is
0.454 x fs.
10. The calculating delay time which occurred by digital filtering. This time is from the input of analog
signal to setting the 20bit data of both channels to the output register for ADC.
For DAC, this time is from setting the 20bit data of both channels on input register to the output of
analog signal.
Symbol
min
typ
max
Units
PB
0
0
0
0
19.76
20.02
20.20
22.05
kHz
kHz
kHz
kHz
kHz
dB
dB
1/fs
us
SB
PR
SA
GD
GD
24.34
±
0.005
80
29.3
0
FR
0.9
2.7
6.0
Hz
Hz
Hz
PB
0
0
20.0
22.05
kHz
kHz
kHz
dB
dB
1/fs
SB
PR
SA
GD
24.1
±
0.06
43
14.7
FR
±
0.1
dB
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