AK4642VN Datasheet, PDF (48/82 Pages) Asahi Kasei Microsystems – 16-Bit ΔΣ Stereo CODEC with MIC/HP/SPK-AMP

ASAHI KASEI
[AK4642]
BOOST=OFF࣌ɺϔουϑΥϯΞϯϓͷ֎෦఍߅ͱίϯσϯαͰΧοτΦϑप೾਺(fc)͕ܾ·Γ·͢ɻόεϒ
ʔετΛซ༻͢Δ͜ͱͰΧοτΦϑप೾਺Λ௿Ҭ΁γϑτ͢Δ͜ͱ͕Ͱ͖·͢ɻTable 39ʹ֎෦఍߅ͱίϯ
σϯαͼٴΧοτΦϑप೾਺(fc)ͷؔ܎ͱͦͷ࣌ͷग़ྗύϫʔΛࣔ͠·͢ɻୠ͠ɺϔουϑΥϯͷR_L͸16Ω
ͱ͠·͢ɻग़ྗύϫʔ͸AVDD=HVDD=2.7, 3.0, 3.3V࣌ͷ஋Ͱ͢ɻϔουϑΥϯΞϯϓͷग़ྗ͸0.6 x AVDD
(Vpp)Ͱ͢ɻ
֎෇͚ͷR͕12ΩҎԼͷ৔߹͸ɺϔουϑΥϯΞϯϓ͕ൃৼ͢ΔՄೳੑ͕͋Γ·͢ͷͰɺൃৼ๷ࢭճ࿏
(0.22µF±20%ͷίϯσϯαͱ10Ω±20%ͷ఍߅)Λ͚ͭͯԼ͍͞ɻ
HP-AMP
AK4642
R
0.22µ
10Ω
C _Headphone
16Ω
HPG bit R [Ω]
6.8
0
16
1
100
Figure 32. ϔουϑΥϯΞϯϓͷ֎෇͚ճ࿏ྫ
C [µF]
100
47
100
47
22
10
fc [Hz]
fc [Hz]
BOOST=OFF BOOST=MIN
@fs=44.1kHz
70
28
149
78
50
19
106
47
62
25
137
69
Table 39. ֎෇͚ճ࿏ྫ
Output Power [mW]@0dBFS
2.7V
3.0V
3.3V
10.1
12.5
15.1
5.1
6.3
7.7
0.9
1.1
1.3
MS0358-J-02
- 48 -
2005/04