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參數(shù)資料
| 型號： | AK4673 |
| 廠商： | Asahi Kasei Microsystems Co.,Ltd |
| 元件分類： | Codec |
| 英文描述： | Stereo CODEC with MIC/HP-AMP and Touch Screen Controller |
| 中文描述： | 立體聲編解碼器麥克風(fēng)/惠普- AMP及觸摸屏控制器 |
| 文件頁數(shù)： | 15/107頁 |
| 文件大?。?/td> | 1171K |
| 代理商： | AK4673 |
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[AK4673]
MS0670-E-00
2007/09
- 15 -
FILTER CHARACTERISTICS
(Ta=25
°
C; AVDD=DVDD=2.6
～
3.6V, TVDD1=2.5
～
3.6V, TVDD2=1.6
～
3.6V, HVDD=2.6
～
5.25V, TSVDD=3.3V,
fs=44.1kHz; DEM=OFF; FIL1=FIL3=EQ=OFF)
Parameter
Symbol
ADC Digital Filter (Decimation LPF):
Passband (
Note 26
)
±
0.16dB
PB
0.66dB
1.1dB
6.9dB
Stopband
SB
Passband Ripple
PR
Stopband Attenuation
SA
Group Delay (
Note 27
)
GD
Group Delay Distortion
Δ
GD
ADC Digital Filter (HPF):
(
Note 28
)
Frequency Response (
Note 26
)
3.0dB
FR
0.5dB
0.1dB
DAC Digital Filter (LPF):
Passband (
Note 26
)
±
0.1dB
PB
0.7dB
6.0dB
Stopband
SB
Passband Ripple
PR
Stopband Attenuation
SA
Group Delay (
Note 27
)
GD
DAC Digital Filter (LPF) + SCF:
Frequency Response: 0
～
20.0kHz
FR
DAC Digital Filter (HPF):
(
Note 28
)
Frequency Response (
Note 26
)
3.0dB
FR
0.5dB
0.1dB
BOOST Filter:
(
Note 29
)
MIN
20Hz
FR
100Hz
1kHz
MID
20Hz
FR
100Hz
1kHz
MAX
20Hz
FR
100Hz
1kHz
Note 26. The passband and stopband frequencies scale with fs (system sampling rate).
For example, DAC is PB=0.454*fs (@
0.7dB). Each response refers to that of 1kHz.
Note 27. 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. Group delay of DAC part is 25/fs(typ) at PMADL=PMADR bits = “0”.
Note 28. When PMADL bit = “1” or PMADR bit = “1”, the HPF of ADC is enabled but the HPF of DAC is disabled.
When PMADL=PMADR bits = “0”, PMDAC bit = “1”, the HPF of DAC is enabled but the HPF of ADC is
disabled.
Note 29. These frequency responses scale with fs. If a high-level and low frequency signal is input, the analog output clips
to the full-scale.
min
typ
max
Units
0
-
-
-
-
17.3
-
-
-
-
±
0.1
-
-
-
kHz
kHz
kHz
kHz
kHz
dB
dB
1/fs
μ
s
19.4
19.9
22.1
-
-
-
19
0
26.1
-
73
-
-
-
-
-
0.9
2.7
6.0
-
-
-
Hz
Hz
Hz
0
-
-
-
19.6
-
-
-
±
0.01
-
-
kHz
kHz
kHz
kHz
dB
dB
1/fs
20.0
22.05
-
-
-
25
25.2
-
59
-
-
±
1.0
-
dB
-
-
-
0.9
2.7
6.0
-
-
-
Hz
Hz
Hz
-
-
-
-
-
-
-
-
-
5.76
2.92
0.02
10.80
6.84
0.13
16.06
10.54
0.37
-
-
-
-
-
-
-
-
-
dB
dB
dB
dB
dB
dB
dB
dB
dB
Frequency Response
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