AK4647VQ Datasheet, PDF (45/72 Pages) Asahi Kasei Microsystems – Stereo CODEC with MIC/HP-AMP

ASAHI KASEI
[AK4647]
ʻϔουϑΥϯΞϯϓͷ֎෦ճ࿏ʼ
BOOST=OFF࣌ɺϔουϑΥϯΞϯϓͷ֎෦఍߅ͱίϯσϯαͰΧοτΦϑप೾਺(fc)͕ܾ·Γ·͢ɻόεϒ
ʔετΛซ༻͢Δ͜ͱͰΧοτΦϑप೾਺Λ௿Ҭ΁γϑτ͢Δ͜ͱ͕Ͱ͖·͢ɻTable 40ʹ֎෦఍߅ͱίϯ
σϯαͼٴΧοτΦϑप೾਺(fc)ͷؔ܎ͱͦͷ࣌ͷग़ྗύϫʔΛࣔ͠·͢ɻୠ͠ɺϔουϑΥϯͷR_L͸16Ω
ͱ͠·͢ɻग़ྗύϫʔ͸HVDD=2.7, 3.0, 3.3, 5V࣌ͷ஋Ͱ͢ɻϔουϑΥϯΞϯϓͷग़ྗ͸0.6 x AVDD
(Vpp)@HPG bit = “0”, 0.91 x AVDD (Vpp)@HPG bit = “1”Ͱ͢ɻ
֎෇͚ͷR͕12ΩҎԼͷ৔߹͸ɺϔουϑΥϯΞϯϓ͕ൃৼ͢ΔՄೳੑ͕͋Γ·͢ͷͰɺൃৼ๷ࢭճ࿏
(0.22μF±20%ͷίϯσϯαͱ10Ω±20%ͷ఍߅)Λ͚ͭͯԼ͍͞ɻ
HP-AMP
AK4647
R
0.22μ
10Ω
C _Headphone
16Ω
HPG bit R [Ω]
6.8
0
16
0
1
100
Figure 34. ϔουϑΥϯΞϯϓͷ֎෇͚ճ࿏ྫ
C [μF]
100
47
100
47
220
100
22
10
fc [Hz]
BOOST=OFF
fc [Hz]
BOOST=MIN
@fs=44.1kHz
70
28
149
78
50
19
106
47
45
17
100
43
62
25
137
69
Table 40. ֎෇͚ճ࿏ྫ
Output Power [mW]@0dBFS
2.7V
3.0V
3.3V
10.1
12.5
15.1
5.1
6.3
7.7
33
41
50
0.9
1.1
1.3
MS0566-J-00
- 45 -
2006/11