參數(shù)資料
型號(hào): AK4551
廠商: Asahi Kasei Microsystems Co.,Ltd
元件分類: Codec
英文描述: LOW POWER & SMALL PACKAGE 20BIT CODEC
中文描述: 低功耗
文件頁(yè)數(shù): 5/15頁(yè)
文件大小: 109K
代理商: AK4551
ASAHI KASEI
[AK4551]
MS0029-E-00
2000/5
- 5 -
FILTER CHARACTERISTICS
(Ta=25
°
C; VDD=2.2
3.6V; fs=44.1kHz; DEM0=“1”, DEM1=“0”)
Parameter
ADC Digital Filter (Decimation LPF):
Passband (
Note 6
)
±
0.1dB
-1.0dB
-3.0dB
Stopband
Passband Ripple
Stopband Attenuation
Group Delay (
Note 7
)
Group Delay Distortion
ADC Digital Filter (HPF):
Frequency Response (
Note 6
)
-3dB
-0.5dB
-0.1dB
DAC Digital Filter:
Passband (
Note 6
)
±
0.1dB
-6.0dB
Stopband
Passband Ripple
Stopband Attenuation
Group Delay (
Note 7
)
Group Delay Distortion
DAC Digital Filter + Analog Filter
Frequency Response 0
20.0kHz
Note 6. The passband and stopband frequencies scale with fs (sampling frequency).
For examples, PB=20.0kHz(@ADC: -1.0dB, DAC: -0.1dB) are 0.454 x fs.
Note 7. 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.
DC CHARACTERISTICS
(Ta=25
°
C; VDD=2.2
3.6V)
Parameter
Symbol
High-Level Input Voltage
Low-Level Input Voltage
VIL
High-Level Output Voltage (Iout=-20uA)
Low-Level Output Voltage (Iout=20uA)
VOL
Input Leakage Current
Iin
Symbol
min
typ
max
Units
PB
0
20.0
21.1
17.0
0
17.4
kHz
kHz
kHz
kHz
dB
dB
1/fs
us
SB
PR
SA
GD
GD
27.0
65
±
0.1
FR
3.4
10
22
Hz
Hz
Hz
PB
0
22.05
15.4
0
20.0
kHz
kHz
kHz
dB
dB
1/fs
us
SB
PR
SA
GD
GD
24.1
43
±
0.06
FR
±
0.5
dB
min
typ
-
-
-
max
-
Units
V
V
V
V
uA
VIH
70
%
VDD
-
VDD-0.1
-
-
30
%
VDD
-
0.1
±
10
VOH
-
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