AK4642VN Datasheet, PDF (47/82 Pages) Asahi Kasei Microsystems – 16-Bit ΔΣ Stereo CODEC with MIC/HP/SPK-AMP

ASAHI KASEI
[AK4642]
„ ϔουϑΥϯΞϯϓ
ϔουϑΥϯΞϯϓͷిݯ͸HVDD͔Β͞څڙΕ·͢ɻίϞϯిѹ͸HVDD/2Ͱ͢ɻෛՙ఍߅͓Αͼग़ྗి
ѹ͸HVDDʹΑΓنఆ͞Ε·͢ɻग़ྗిѹ͸HPG bitͰ੾Γସ͑Δ͜ͱ͕Ͱ͖·͢(Table 38)ɻ
HVDD
2.6 ∼ 5.25V
4.0 ∼ 5.25V
HPG bit
0
1
ग़ྗిѹ [Vpp]
0.6 x AVDD
0.91 x AVDD
ෛՙ఍߅ (min)
22Ω
100Ω
Table 38. ϔουϑΥϯͷग़ྗిѹͱෛՙ఍߅
HPMTN bitΛ “0”ʹ͢ΔͱɺϔουϑΥϯΞϯϓͷίϞϯిѹΛHVSSʹཱͪԼ͛·͢ɻHPMTN bitΛ “1”ʹ
͢ΔͱίϞϯిѹΛHVDD/2ʹ্ཱͪ͛·͢ɻϙοϓϊΠζ๷ࢭͷͨΊʹɺMUTET pinͱάϥϯυؒʹίϯ
σϯαΛ઀ଓ͠·͢ɻ্ཱͪ͛ʗཱͪԼ͛࣌ఆ਺͸HVDD͓ΑͼMUTET pinͷίϯσϯαʹൺྫ͠·͢ɻ
ྫ : MUTET pinͷίϯσϯαC=1µF, HVDD=3.3Vͷ৔߹
ɾ
ϔουϑΥϯΞϯϓ্ཱͪ͛ʗཱͪԼ͛࣌ఆ਺: 100ms(typ), 250ms(max)
ɾ
׬શʹཱͪԼ͕Δ·Ͱͷ࣌ؒ: 500ms(max)
PMHPL, PMHPR bitΛ “0”ʹ͢Δ͜ͱͰɺϔουϑΥϯΞϯϓΛ׬શʹύϫʔμ΢ϯ͢Δ͜ͱ͕Ͱ͖·͢ɻ͜
ͷ࣌ɺHPL, HPR pin͸ “L” (HVSS)ʹͳΓ·͢ɻ
PMHPL bit,
PMHPR bit
HPMTN bit
HPL pin,
HPR pin
(1) (2)
(3)
(4)
Figure 31. ϔουϑΥϯΞϯϓͷύϫʔΞοϓʗμ΢ϯγʔέϯε
(1) ϔουϑΥϯΞϯϓͷύϫʔΞοϓ(PMHPL, PMHPR bit = “1”)ɻग़ྗ͸HVSSͷ··Ͱ͢ɻ
(2) ϔουϑΥϯΞϯϓͷίϞϯిѹ্ཱͪ͛(HPMTN bit = “1”)ɻ
(3) ϔουϑΥϯΞϯϓͷίϞϯిѹཱͪԼ͛(HPMTN bit = “0”)ɻ
(4) ϔουϑΥϯΞϯϓͷύϫʔμ΢ϯ(PMHPL, PMHPR bit = “0”)ɻग़ྗ͸HVSSʹͳΓ·͢ɻϙοϓԻ๷ࢭ
ͷͨΊɺϔουϑΥϯΞϯϓͷίϞϯిѹ͕׬શʹԼ͕͔ͬͯΒύϫʔμ΢ϯ͍ͯͩ͘͠͞ɻ
MS0358-J-02
- 47 -
2005/04