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AK4642VN Datasheet, PDF (12/82 Pages) Asahi Kasei Microsystems – 16-Bit ΔΣ Stereo CODEC with MIC/HP/SPK-AMP
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ASAHI KASEI
[AK4642]
Parameter
min
typ
max
Units
Speaker-Amp Characteristics: DAC → SPP/SPN pins, ALC=OFF, IVOL=0dB, DVOL=0dB, RL=8Ω, BTL,
HVDD=3.3V
Output Voltage (Note 21)
SPKG1-0 bits = “00”, −0.5dBFS (Po=150mW)
2.49
3.11
3.73
Vpp
SPKG1-0 bits = “01”, −0.5dBFS (Po=240mW)
-
3.92
-
Vpp
SPKG1-0 bits = “10”, −2.5dBFS (Po=400mW)
-
1.79
-
Vrms
S/(N+D)
SPKG1-0 bits = “00”, −0.5dBFS (Po=150mW)
-
60
-
dB
SPKG1-0 bits = “01”, −0.5dBFS (Po=240mW)
20
50
-
dB
SPKG1-0 bits = “10”, −2.5dBFS (Po=400mW)
-
20
-
dB
S/N
(A-weighted)
80
90
-
dB
Load Resistance
8
-
-
Ω
Load Capacitance
-
-
30
pF
Speaker-Amp Characteristics: DAC → SPP/SPN pins, ALC=OFF, IVOL=0dB, DVOL=0dB, CL=3µF, Rserial=10Ω x 2,
BTL, HVDD=5.0V
Output Voltage SPKG1-0 bits = “10”, 0dBFS
-
6.75
-
Vpp
(Note 21) SPKG1-0 bits = “11”, 0dBFS
6.80
8.50
10.20
Vpp
S/(N+D)
SPKG1-0 bits = “10”, 0dBFS
-
60
-
dB
(Note 22) SPKG1-0 bits = “11”, 0dBFS
40
50
-
dB
S/N
(A-weighted)
80
90
-
dB
Load Impedance (Note 23)
50
-
-
Ω
Load Capacitance (Note 23)
-
-
3
µF
BEEP Input: BEEP pin (External Input Resistance=20kΩ)
Maximum Input Voltage (Note 24)
-
1.98
-
Vpp
Gain (Note 25)
BEEP Æ LOUT/ROUT LOVL bit = “0”
−4.5
0
+4.5
dB
LOVL bit = “1”
-
+2
-
dB
BEEP Æ HPL/HPR
HPG bit = “0”
−24.5
−20
−15.5
dB
HPG bit = “1”
-
−16.4
-
dB
BEEP Æ SPP/SPN
ALC bit = “0”, SPKG1-0 bits = “00”
−0.57
+4.43
+8.93
dB
ALC bit = “0”, SPKG1-0 bits = “01”
-
+6.43
-
dB
ALC bit = “0”, SPKG1-0 bits = “10”
-
+10.65
-
dB
ALC bit = “0”, SPKG1-0 bits = “11”
-
+12.65
-
dB
ALC bit = “1”, SPKG1-0 bits = “00”
-
+6.43
-
dB
ALC bit = “1”, SPKG1-0 bits = “01”
-
+8.43
-
dB
ALC bit = “1”, SPKG1-0 bits = “10”
-
+12.65
-
dB
ALC bit = “1”, SPKG1-0 bits = “11”
-
+14.65
-
dB
Note 21. ग़ྗిѹ͸AVDDʹൺྫ͠·͢ɻ
Full-differentialͷ৔߹ɺVout = 0.94 x AVDD(typ)@SPKG1-0 bits = “00”, 1.19 x AVDD(typ)@SPKG1-0 bits
= “01”, 2.05 x AVDD(typ)@SPKG1-0 bits = “10”, 2.58 x AVDD(typ)@SPKG1-0 bits = “11”Ͱ͢ɻ
Note 22. ଌఆ఺͸SPP/SPN pinsͰ͢ɻ
Note 23. Figure 33ʹ͓͍ͯɺLoad Impedance͸γϦʔζ఍߅ͱ1kHzʹ͓͚ΔѹిεϐʔΧͷΠϯϐʔμϯε
ͷ߹੒ΠϯϐʔμϯεͰ͢ɻLoad Capacitance͸ѹిεϐʔΧͷ༰ྔ੒෼Ͱ͢ɻѹిεϐʔΧΛ࢖༻
͢Δ৔߹ɺSPP, SPN pinʹͦΕͧΕ10ΩҎ্ͷγϦʔζ఍߅Λ઀ଓͯ͠Լ͍͞ɻ
Note 24. ࠷େೖྗిѹ͸AVDDͱ֎෦ೖྗ఍߅(Rin)ʹൺྫ͠·͢ɻVin = 0.6 x AVDD x Rin / 20kΩ (typ).
Note 25. ήΠϯ͸֎෦ೖྗ఍߅ʹ൓ൺྫ͠·͢ɻ
MS0358-J-02
- 12 -
2005/04
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