AK4343VN Datasheet, PDF (57/99 Pages) Asahi Kasei Microsystems – Stereo DAC with HP/RCV/SPK-AMP

[AK4343]
■ ϔουϑΥϯΞϯϓ(HPL/HPR pins)
ϔουϑΥϯΞϯϓͷిݯ͸HVDD͔Β͞څڙΕ·͢ɻίϞϯిѹ͸HVDD/2@VBAT bit = “0”Ͱ͢ɻෛՙ఍
߅͸16Ω (min)Ͱ͢ɻग़ྗిѹ͸HPG bitͰ੾Γସ͑Δ͜ͱ͕Ͱ͖·͢(Table 49)ɻ
HPG bit
0
Output Voltage [Vpp]
0.6 x AVDD
Table 49. ϔουϑΥϯͷग़ྗిѹ
1
0.91 x AVDD
HPMTN bitΛ “0”ʹ͢ΔͱɺϔουϑΥϯΞϯϓͷίϞϯిѹΛHVSSʹཱͪԼ͛·͢ɻHPMTN bitΛ “1”ʹ
͢ΔͱίϞϯిѹΛHVDD/2@VBAT bit = “0”ʹ্ཱͪ͛·͢ɻϙοϓϊΠζ๷ࢭͷͨΊʹɺMUTET pinͱά
ϥϯυؒʹίϯσϯαΛ઀ଓ͠·͢ɻ্ཱͪ͛ʗཱͪԼ͛࣌ఆ਺͸HVDD͓ΑͼMUTET pinͷίϯσϯαʹ
ൺྫ͠·͢ɻ
ྫ : MUTET pinͷίϯσϯαC=1μF, HVDD=3.3Vͷ৔߹
ɾ
ϔουϑΥϯΞϯϓ্ཱͪ͛ʗཱͪԼ͛࣌ఆ਺: 100ms(typ), 250ms(max)
ɾ
׬શʹཱͪԼ͕Δ·Ͱͷ࣌ؒ: 500ms(max)
PMHPL, PMHPR bitsΛ “0”ʹ͢Δ͜ͱͰɺϔουϑΥϯΞϯϓΛ׬શʹύϫʔμ΢ϯ͢Δ͜ͱ͕Ͱ͖·͢ɻ
͜ͷ࣌ɺHPL, HPR pins͸ “L” (HVSS)ʹͳΓ·͢ɻ
PMHPL bit,
PMHPR bit
HPMTN bit
HPL pin,
HPR pin
(1) (2)
(3)
(4)
Figure 52. ϔουϑΥϯΞϯϓͷύϫʔΞοϓʗμ΢ϯγʔέϯε
(1) ϔουϑΥϯΞϯϓͷύϫʔΞοϓ(PMHPL, PMHPR bits = “1”)ɻग़ྗ͸HVSSͷ··Ͱ͢ɻ
(2) ϔουϑΥϯΞϯϓͷίϞϯిѹ্ཱͪ͛(HPMTN bit = “1”)ɻ
(3) ϔουϑΥϯΞϯϓͷίϞϯిѹཱͪԼ͛(HPMTN bit = “0”)ɻ
(4) ϔουϑΥϯΞϯϓͷύϫʔμ΢ϯ(PMHPL, PMHPR bits = “0”)ɻग़ྗ͸HVSSʹͳΓ·͢ɻϙοϓԻ๷ࢭ
ͷͨΊɺϔουϑΥϯΞϯϓͷίϞϯిѹ͕׬શʹԼ͕͔ͬͯΒύϫʔμ΢ϯ͍ͯͩ͘͠͞ɻ
MS0478-J-02
- 57 -
2010/11