參數(shù)資料
型號: AK4683EQ
廠商: ASAHI KASEI POWER DEVICES CORP
元件分類: 消費家電
英文描述: Asynchronous Multi-Channel Audio CODEC with DIR/T
中文描述: SPECIALTY CONSUMER CIRCUIT, PQFP64
封裝: 0.50 MM PITCH, LEAD FREE, PLASTIC, LQFP-64
文件頁數(shù): 10/84頁
文件大小: 1077K
代理商: AK4683EQ
[AK4683]
MS0427-E-02
2007/04
- 10 -
FILTER CHARACTERISTICS
(Ta=25
°
C; AVDD1, AVDD2, DVDD, PVDD, HVDD=4.5
5.5V; TVDD=2.7
5.5V; fs=48kHz)
Parameter
ADC Digital Filter (Decimation LPF):
Passband (Note 14)
±
0.1dB
-0.2dB
-3.0dB
Stopband
Passband Ripple
Stopband Attenuation
Group Delay (Note 15)
Group Delay Distortion
ADC Digital Filter (HPF):
Frequency Response (Note 14)
-3dB
-0.1dB
DAC Digital Filter:
Passband (Note 14)
-0.1dB
-6.0dB
Stopband
Passband Ripple
Stopband Attenuation
Group Delay (Note 15)
DAC Digital Filter + Analog Filter:
Frequency Response: 0
20.0kHz
40.0kHz (Note 16)
80.0kHz (Note 16)
Note 14. The passband and stopband frequencies are proportional to fs.
For example, 21.8kHz at –0.1dB is 0.454 x fs (DAC). The reference frequency of these responses is 1kHz.
Note 15. 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 of PORTA or PORTB.
For DAC, this time is from setting the 20/24bit data of both channels on input register of PORTA or PORTB to
the output of analog signal.
Note 16. 40kHz@fs=96kHz, 80kHz@fs=192kHz
Symbol
min
typ
max
Units
PB
0
-
-
20.0
23.0
19
0
18.9
-
-
±
0.04
kHz
kHz
kHz
kHz
dB
dB
1/fs
μs
SB
PR
SA
GD
Δ
GD
28.0
68
FR
1.0
6.5
Hz
Hz
PB
0
-
24.0
21
21.8
-
±
0.02
kHz
kHz
kHz
dB
dB
1/fs
SB
PR
SA
GD
26.2
54
FR
FR
FR
±
0.2
±
0.3
±
1.0
dB
dB
dB
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