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AK4343VN Datasheet, PDF (46/99 Pages) Asahi Kasei Microsystems – Stereo DAC with HP/RCV/SPK-AMP | |||
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[AK4343]
â ÏÎΤϯÏÎγεÏÎϧλίϯÏÏ©Êϧ
IIRÏÎϧλʹÎÎ3प೾਺(32kHz, 44.1kHz, 48kHz)à¬°Ô Í·ÏÎΤϯÏÎγεÏÎϧλ(tc=50/15μsà²à©)Î಺à¬
Í Í¯ÍÎ͢ɻà³à¾ÏÊÎ»Í´à¬°Í Í¯ÉºDEM1-0 bitsͰબàÍÎͨप೾਺ͷÏÎΤϯÏÎγεÏÎϧλÍà¼Þ®Í´Í³
ÎÎÍ¢(Table 33)É»
DEM1 DEM0
Mode
0
0
44.1kHz
0
1
OFF
(default)
1
0
48kHz
1
1
32kHz
Table 33. ÏÎΤϯÏÎγείϯÏÏ©Êϧ
â ÏεÏÊεÏÕ³à¿
BST1-0 bitsÎίϯÏÏ©Êϧ͢ÎÍͱͰɺDACÍÎÏεÏÊεÏÍÎͨ৴߸Îà¥à¾Í¢ÎÍͱÍÍ°ÍÎÍ¢(Table
34)É»ÎͨɺBST1-0 bits = â01â(MIN)ݻʹà°Í¢ÎÍͱͰɺÏοÏ
ÏΥϯà¥à¾Í·DCΧοÏ༻ίϯÏϯαÎ47μF
ÎÍ°à¦ÍÍÍ¢ÎÍͱÍÍ°ÍÎ͢ɻÏεÏÊεÏÍÎͨ৴߸ÍÏϧεÎÊϧÎà¯Íͨà§ß¹ÉºDACÍÎÍ·à¥à¾Í
ΫϦοÏÍ Î͢ɻFigure 35͸â20dBͷ৴߸ϨÏϧÎà³à¾Í ͨà§ß¹Í·ÏεÏÊεÏÞÍ·à²à©Í°Í¢É»
0
MAX
-5
MID
-10
MIN
-15
-20
-25
10
Boost Filter (fs=44.1kHz)
100
1000
Frequency [Hz]
Figure 35. ÏεÏÊεÏप೾਺ (fs=44.1kHz)
BST1
BST0
Mode
0
0
OFF
(default)
0
1
MIN
1
0
MID
1
1
MAX
Table 34. ÏεÏÊεÏίϯÏÏ©Êϧ
10000
MS0478-J-02
- 46 -
2010/11
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