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AK4645EN Datasheet, PDF (12/96 Pages) Asahi Kasei Microsystems – Stereo CODEC with MIC/HP-AMP | |||
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ASAHI KASEI
[AK4645]
ÏÎϧλà²à©
(Ta=25°C; AVDD, DVDD=2.6 ⼠3.6V; TVDD=1.6 ⼠3.6V; HVDD=2.6 ⼠5.25V; fs=44.1kHz; DEM=OFF;
FIL1=FIL3=EQ=OFF)
Parameter
Symbol
min
typ
max
ADC Digital Filter (Decimation LPF):
Passband (Note 26)
±0.16dB
PB
0
-
17.3
â0.66dB
-
19.4
-
â1.1dB
-
19.9
-
â6.9dB
-
22.1
-
Stopband
SB
26.1
-
-
Passband Ripple
PR
-
-
±0.1
Stopband Attenuation
SA
73
-
-
Group Delay (Note 27)
GD
-
19
-
Group Delay Distortion
âGD
-
0
-
ADC Digital Filter (HPF): (Note 28)
Frequency Response (Note 26) â3.0dB
FR
-
0.9
-
â0.5dB
-
2.7
-
â0.1dB
-
6.0
-
DAC Digital Filter (LPF):
Passband (Note 26)
Stopband
Passband Ripple
Stopband Attenuation
Group Delay (Note 27)
±0.1dB
PB
â0.7dB
â6.0dB
SB
PR
SA
GD
0
-
19.6
-
20.0
-
-
22.05
-
25.2
-
-
-
-
±0.01
59
-
-
-
25
-
DAC Digital Filter (LPF) + SCF:
Frequency Response: 0 â¼ 20.0kHz
FR
-
±1.0
-
DAC Digital Filter (HPF): (Note 28)
Frequency Response (Note 26) â3.0dB
FR
-
0.9
-
â0.5dB
-
2.7
-
â0.1dB
-
6.0
-
BOOST Filter: (Note 29)
Frequency Response MIN 20Hz
FR
100Hz
1kHz
MID 20Hz
FR
-
5.76
-
-
2.92
-
-
0.02
-
-
10.80
-
100Hz
1kHz
MAX 20Hz
FR
100Hz
1kHz
-
6.84
-
-
0.13
-
-
16.06
-
-
10.54
-
-
0.37
-
Units
kHz
kHz
kHz
kHz
kHz
dB
dB
1/fs
µs
Hz
Hz
Hz
kHz
kHz
kHz
kHz
dB
dB
1/fs
dB
Hz
Hz
Hz
dB
dB
dB
dB
dB
dB
dB
dB
dB
Note 26. ֤ৼ෯à²à©Í·à¤ªà³¾à¨ºÍ¸ fs (γεÏÏαϯÏϦϯάϨÊÏ)Í´àµºà¾«Í Î͢ɻ
ྫÍ͹ɺPB=20.0kHz(@â0.7dB)͸0.454 x fsÍ°Í¢(DAC)É»Ö¤Ô à±´Í¸1kHzÎØ¬à¥ªÍ´Í Î͢ɻ
Note 27. ÏÎδλϧÏÎϧλʹÎÎà®ÔÔà¢Í°ÉºADC෦͸ÎÏϩά৴߸Íà³à¾ÍÎͯÍÎà¾Î½ÏÏϧͷ16Ï
οÏÏÊλÍà¥à¾Ï¨Î´ÎµÎ»Í´Î·Î¿ÏÍÎÎÎÍ°Í·à£ØͰ͢ɻ
DAC෦͸16ÏοÏÏÊλÍà³à¾Ï¨Î´ÎµÎ»Í´Î·Î¿ÏÍÎͯÍÎÎÏϩά৴߸Íà¥à¾ÍÎÎÎÍ°Í·à£Ø
Ͱ͢ɻPMADL=PMADR bits = â0âͷͱÍDAC෦ͷGroup Delay͸25/fs(typ)Ͱ͢ɻ
Note 28. PMADL bit = â1â or PMADR bit = â1âͷͱÍɺADCÍ·HPF͸ONɺDACÍ·HPF͸OFFͰ͢ɻ
PMADL=PMADR bits = â0â, PMDAC bit = â1âͷͱÍɺDACÍ·HPF͸ONɺADCÍ·HPF͸OFFͰ͢ɻ
Note 29. प೾਺à²à©Í¸Î±Ï¯ÏϦϯάϨÊÏÍ´àµºà¾«Í Î͢ɻߴϨÏϧͷ௿प೾৴߸Îà³à¾Í ͨà§ß¹Éºà¯¿Ò¬Í°Î«
ϦοÏÍ Î͢ɻ
MS0543-J-00
- 12 -
2006/09
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