AK4343VN Datasheet, PDF (58/99 Pages) Asahi Kasei Microsystems – Stereo DAC with HP/RCV/SPK-AMP

[AK4343]
BOOST=OFF࣌ɺϔουϑΥϯΞϯϓͷ֎෦఍߅ͱίϯσϯαͰΧοτΦϑप೾਺(fc)͕ܾ·Γ·͢ɻόεϒ
ʔετΛซ༻͢Δ͜ͱͰΧοτΦϑप೾਺Λ௿Ҭ΁γϑτ͢Δ͜ͱ͕Ͱ͖·͢ɻTable 50ʹ֎෦఍߅ͱίϯ
σϯαͼٴΧοτΦϑप೾਺(fc)ͷؔ܎ͱͦͷ࣌ͷग़ྗύϫʔΛࣔ͠·͢ɻୠ͠ɺϔουϑΥϯͷR_L͸16Ω
ͱ͠·͢ɻग़ྗύϫʔ͸HVDD=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
AK4343
CR
0.22μ
10Ω
Headphone
16Ω
HPG bit R [Ω]
0
0
6.8
16
0
1
100
Figure 53. ϔουϑΥϯΞϯϓͷ֎෇͚ճ࿏ྫ
fc [Hz]
fc [Hz]
Output Power [mW]@0dBFS
C [μF]
BOOST
=OFF
BOOST
=MIN
fs=44.1kHz
HVDD=3.0V HVDD=3.3V HVDD=5V
AVDD=3.0V AVDD=3.3V AVDD=3.3V
220
45
17
25.3
30.6
30.6
100
100
43
100
70
28
12.5
15.1
15.1
47
149
78
100
50
19
6.3
7.7
7.7
47
106
47
220
45
100
100
17
43
51
(Note 39)
62
(Note 39)
70
22
62
25
1.1
1.3
1.3
10
137
69
Table 50. ֎෇͚ճ࿏ྫ
Note 38. 16Ωෛՙ୺Ͱͷग़ྗిྗͰ͢ɻ
Note 39. ग़ྗ৴߸͸ΫϦοϓ͠·͢ɻ
ʻϔουϑΥϯΞϯϓͷPSRRʼ
ܞଳి࿩ͷγεςϜʹ͓͍ͯHVDDΛόοςϦిѹ͔Β௚઀͢څڙΔ৔߹ɺRFϊΠζ͕ϔουϑΥϯΞϯϓ
ͷಛੑʹӨڹΛ͢΅ٴ৔߹͕͋Γ·͢ɻVBAT bit = “1”ʹઃఆ͢ΔͱɺHVDDʹॏ৞͞ΕΔϊΠζʹର͢Δ
ϔουϑΥϯΞϯϓͷPSRRΛվળ͢Δ͜ͱ͕Ͱ͖·͢ɻ͜ͷͱ͖ϔουϑΥϯΞϯϓͷίϞϯిѹ͸0.64 x
AVDD(typ)Ͱ͢ɻAVDD=3.3V࣌ɺίϞϯిѹ͸2.1VͱͳΔͷͰɺHVDDͷిѹ͕4.2VΑΓ΋Լ͕ͬͨ৔߹ɺ
ग़ྗ৴߸͕ΫϦοϓ͠΍͘͢ͳΓ·͢ɻ
VBAT bit
0
1
Common Voltage [V]
0.5 x HVDD
0.64 x AVDD
Table 51. ϔουϑΥϯΞϯϓͷίϞϯిѹ
MS0478-J-02
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2010/11