參數(shù)資料
型號: AK4588
廠商: Asahi Kasei Microsystems Co.,Ltd
元件分類: Codec
英文描述: 2/8 CHANNEL AUDIO CODEC WITH DIR
中文描述: 2 / 8聲道音頻編解碼器迪爾
文件頁數(shù): 12/76頁
文件大?。?/td> 787K
代理商: AK4588
ASAHI KASEI
[AK4588]
MS0287-E-01
2004/03
- 12 -
Notes:
5. S/N measured by CCIR-ARM is 96dB(@fs=48kHz).
6. PSR is applied to AVDD, DVDD, PVDD and TVDD with 1kHz, 50mVpp. VREFH pin is held a constant voltage.
7. S/N measured by CCIR-ARM is 102dB(@fs=48kHz).
8. C
L
=20pF, X'tal=24.576MHz, CM1-0=“10”, CM1-0=“10”, OCKS1-0="10"@48kHz,"00"@96kHz, "11"@192kHz.
9. TVDD=13mA(typ).
10. In the power-down mode. RX inputs are open and all digital input pins including clock pins (MCLK, BICK,
LRCK) are held DVSS.
FILTER CHARACTERISTICS
(Ta=25
°
C; AVDD, DVDD=4.5
5.5V; TVDD=2.7
5.5V; fs=48kHz)
Parameter
Symbol
ADC Digital Filter (Decimation LPF):
Passband
(Note 11)
-0.2dB
-3.0dB
Stopband
SB
Passband Ripple
PR
Stopband Attenuation
SA
Group Delay (Note 12)
GD
Group Delay Distortion
GD
ADC Digital Filter (HPF):
Frequency Response (Note 11)
-3dB
-0.1dB
DAC Digital Filter:
Passband (Note 11)
-0.1dB
-6.0dB
Stopband
SB
Passband Ripple
PR
Stopband Attenuation
SA
Group Delay (Note 12)
GD
DAC Digital Filter + Analog Filter:
Frequency Response: 0
20.0kHz
40.0kHz (Note 13)
80.0kHz (Note 13)
FR
Notes:
11. The passband and stopband frequencies scale with fs.
For example, 21.8kHz at –0.1dB is 0.454 x fs (DAC). The reference frequency of these responses is 1kHz.
12. The calculating delay time which occurred by digital filtering. This time is from setting the input of analog signal
to setting the 24bit data of both channels to the output register for ADC.
For DAC, this time is from setting the 20/24bit data of both channels on input register to the output of analog
signal.
13. 40kHz@fs=96kHz, 80kHz@fs=192kHz
min
typ
max
Units
±
0.1dB
PB
0
-
-
20.0
23.0
16
0
18.9
-
-
±
0.04
kHz
kHz
kHz
kHz
dB
dB
1/fs
μs
28.0
68
FR
1.0
6.5
Hz
Hz
PB
0
-
24.0
19.2
21.8
-
±
0.02
kHz
kHz
kHz
dB
dB
1/fs
26.2
54
FR
FR
±
0.2
±
0.3
±
1.0
dB
dB
dB
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