AK4343VN Datasheet, PDF (60/99 Pages) Asahi Kasei Microsystems – Stereo DAC with HP/RCV/SPK-AMP

[AK4343]
■ εϐʔΧΞϯϓ(SPP/SPN pins)
εϐʔΧΞϯϓ༻ిݯHVDDͷిѹൣғ͸2.6V ∼ 5.25VͷൣғͰ೚ҙʹઃఆ͢Δ͜ͱ͕ՄೳͰ͢ɻ
εϐʔΧछྨ
μΠφϛοΫεϐʔΧ
ѹిεϐʔΧ
ෛՙ఍߅ (min)
8Ω
50Ω (Note 19)
ෛՙ༰ྔ (max)
30pF
3μF (Note 19)
Note 19. 31HFigure 58ʹ͓͍ͯɺLoad Impedance͸γϦʔζ఍߅(Rseries)ͱ1kHzʹ͓͚ΔѹిεϐʔΧͷΠϯ
ϐʔμϯεͷ߹੒ΠϯϐʔμϯεͰ͢ɻLoad Capacitance͸ѹిεϐʔΧͷ༰ྔ੒෼Ͱ͢ɻѹిεϐʔΧΛ
࢖༻͢Δ৔߹ɺSPP, SPN pinʹͦΕͧΕ10ΩҎ্ͷγϦʔζ఍߅Λ઀ଓͯ͠Լ͍͞ɻ
Table 52. εϐʔΧͷछྨ
DAC͓ΑͼLIN2/RIN2/LIN3/RIN3͔Βͷ৴߸ΛϞϊϥϧ৴߸[(L+R)/2]ʹม͠׵ɺεϐʔΧΞϯϓʹೖྗ͠·
͢ɻ͜ͷεϐʔΧΞϯϓ͸ɺBTL઀ଓʹΑΔϞϊϥϧग़ྗͰɺSPKG1-0 bitsʹͯήΠϯΛௐ੔͢Δ͜ͱ͕Ͱ
͖·͢ɻεϐʔΧΞϯϓ͔Βͷग़ྗϨϕϧ͸AVDD͓ΑͼSPKG1-0 bitsʹΑΓܾ·Γ·͢ɻ
SPKG1-0 bits
00
01
10
11
ήΠϯ
ALC bit = “0”
ALC bit = “1”
+4.43dB
+6.43dB
+6.43dB
+10.65dB
+8.43dB
+12.65dB
+12.65dB
+14.65dB
Table 53. SPK-Amp ήΠϯ
(default)
AVDD HVDD SPKG1-0 bits
SPK-Ampग़ྗ (DACೖྗ=0dBFS)
ALC bit = “0”
ALC bit = “1”
(LMTH1-0 bits = “00”)
00
3.30Vpp
3.11Vpp
3.3V
01
4.15Vpp (Note 40)
3.92Vpp
10
6.75Vpp (Note 40)
6.37Vpp (Note 40)
3.3V
11
8.50Vpp (Note 40)
8.02Vpp (Note 40)
00
3.30Vpp
3.11Vpp
5.0V
01
4.15Vpp
3.92Vpp
10
6.75Vpp (Note 40)
6.37Vpp (Note 40)
11
8.50Vpp (Note 40)
8.02Vpp (Note 40)
Note 40. ৴߸͕ΫϦοϓ͠ͳ͍ͱԾఆͨ͠৔߹ͷग़ྗϨϕϧͰ͢ɻ࣮ࡍʹ͸ɺDAC ͔Β0dBFSͷ৴߸͕ग़ྗ
͞Εͨ৔߹ɺ৴߸͕ΫϦοϓ͠·͢ɻΫϦοϓͤ͞ͳ͍ͨΊʹ͸DVOL౳ʹΑΓDAC͔Βͷग़ྗϨ
ϕϧΛԼ͛ͯɺSPK-Amp͔Βͷग़ྗΛ4.0Vpp(HVDD=3.3V)·ͨ͸6.0Vpp(HVDD=5V)ҎԼʹ཈͑Δඞ
ཁ͕͋Γ·͢ɻ
Table 54. SPK-Amp ग़ྗϨϕϧ
MS0478-J-02
- 60 -
2010/11