AK4642VN Datasheet, PDF (81/82 Pages) Asahi Kasei Microsystems – 16-Bit ΔΣ Stereo CODEC with MIC/HP/SPK-AMP

ASAHI KASEI
ϚʔΩϯά
[AK4642]
4642
XXXXX
1
XXXXX : Date code identifier (5Ü»)
Date (YY/MM/DD)
04/11/16
05/01/17
Revision
00
01
Reason
ॳ൛
هޡగਖ਼
આ໌௥Ճ
આ໌࡟আ
05/04/27
02
هड़มߋ
࢓༷௥Ճ
վగཤྺ
Page Contents
37
ALCϦΧόϦಈ࡞(Table 25)
RGAIN1-0 bits = “10”: 0.875dB → 1.125dB
76
ϔουϑΥϯग़ྗγʔέϯε
DACH bitͷઃఆΛ௥Ճɻ
40
ೖྗσΟδλϧϘϦϡʔϜ
Figure 25ͷ஫ऍ(1)ʹҰจ௥Ճɻ
ʮALC bit = “1”Λॻ͖ࠐΜͰ͔ΒIVL7-0 bits
ͷ஋ͰALCಈ࡞Λ։࢝͢Δ·Ͱͷ଴ͪ࣌ؒ
͸࠷େͰϦΧόϦ଴ؒ࣌ػ(WTM1-0 bits) +
θϩΫϩελΠϜΞ΢τ࣌ؒ(ZTM1-0 bits)
Ͱ͢ɻʯ
Figure 25ͷ஫ऍ(2)ʹҰจ௥Ճɻ
ʮ࠶౓ALCΛEnable͢Δ৔߹͸ɺALC bit =
“0”ͷޙɺθϩΫϩελΠϜΞ΢τ࣌ؒҎ্
ͷִؒΛۭ͚ͯALC bit = “1”Λઃఆͯ͠Լ
͍͞ɻʯ
37
ALCϦΧόϦಈ࡞
Ұจ࡟আɻ
ʮWTM1-0ؒظதʹIVL, IVRͱ΋θϩΫϩ
εಈ࡞ʹΑΓมߋ͞Εͨ৔߹ɺWTM1-0ؒظ
·Ͱ଴ͯ͠ػɺ࣍ͷϦΧόϦಈ࡞ʹೖΓ·
͢ɻʯ
1
ಛ௕
SPKఆ֨ग़ྗ: 250mW Æ 400mW
12
Ξφϩάಛੑ(SPK-Amp)
Output Voltage = 1.79Vrms(typ) at SPKG1-0
bits = “10”, −2.5dBFS (Po=400mW)
MS0358-J-02
- 81 -
2005/04