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AK4647VQ Datasheet, PDF (29/72 Pages) Asahi Kasei Microsystems – Stereo CODEC with MIC/HP-AMP | |||
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ASAHI KASEI
[AK4647]
 ÏΠΫ༻ήΠϯÎϯÏ
AK4647͸ÏΠΫ༻ήΠϯÎϯÏÎ಺à¬Í ͯÍÎ͢ɻMGAIN1-0 bitsÍ´ÎÎήΠϯÎàªà°Í¢ÎÍͱÍÍ°ÍÎÍ¢
(Table 18)É»à³à¾Î ϯÏÊμϯε͸MGAIN1-0 bits = â00âͷͱÍtyp. 60kΩɺMGAIN1-0 bits = â01â, â10â, â11âÍ·
ͱÍtyp. 30kΩͰ͢ɻ
MGAIN1 bit MGAIN0 bit Input Gain
0
0
0dB
0
1
+20dB
1
0
+26dB
1
1
+32dB
Table 18. ÏΠΫà³à¾Î®Î ϯ
Default
 ÏΠΫÏÏ«Ê
PMMP bit = â1âͷͱÍɺMPWR pinÍÎÏΠΫ༻ͷిݯÎÍ¢Ú
ÚÎÍͱÍÍ°ÍÎ͢ɻà¥à¾à°¿Ñ¹Í¸(0.75 x
AVDD)V (typ)Í´àµºà¾«Í Éºà·Õà°ß
͸ɺmin. 0.5kΩͰ͢ɻεÏϨΦÏΠΫ2ܥ౷ͷà§ß¹Í¸Ö¤Î½ÏÏϧ min. 2kΩ
Ͱ͢ɻMPWR pinʹίϯÏϯα͸àªà¬Í ͳÍÍ°Ô¼ÍÍÉ»(Figure 23à¢à¦°)
PMMP bit
MPWR pin
0
Hi-Z
1
Output
Table 19. ÏΠΫÏÏ«Ê
Default
MIC Power
MPWR pin
LIN1 pin
RIN1 pin
LIN2 pin
RIN2 pin
Figure 23. MIC Block Circuit
Microphone
Microphone
Microphone
Microphone
MS0566-J-00
- 29 -
2006/11
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