AK4642EN Datasheet, PDF (11/83 Pages) Asahi Kasei Microsystems – Stereo CODEC with MIC/HP/SPK-AMP

ASAHI KASEI
[AK4642EN]
Parameter
min
typ
max
Units
DAC Characteristics:
Resolution
-
-
16
Bits
Stereo Line Output Characteristics: DAC → LOUT, ROUT pins, ALC=OFF, IVOL=0dB, DVOL=0dB, LOVL bit =
“0”, R_L=10kΩ
Output Voltage (Note 17)
LOVL bit = “0”
1.78
1.98
2.18
Vpp
LOVL bit = “1”
2.25
2.50
2.75
Vpp
S/(N+D) (−3dBFS)
78
88
-
dBFS
S/N
(A-weighted)
82
92
-
dB
Interchannel Isolation
80
100
-
dB
Interchannel Gain Mismatch
-
0.1
0.5
dB
Load Resistance
10
-
-
kΩ
Load Capacitance
-
-
30
pF
Headphone-Amp Characteristics: DAC → HPL/HPR pins, ALC=OFF, IVOL=0dB, DVOL=0dB
Output Voltage (Note 18)
HPG bit = “0”, 0dBFS, HVDD=3.3V, R_L=22.8Ω
1.58
1.98
HPG bit = “1”, 0dBFS, HVDD=5V, R_L=100Ω
2.40
3.00
HPG bit = “1”, 0dBFS, HVDD=3.3V, R_L=16Ω (Po=62mW)
-
1.00
S/(N+D)
2.38
Vpp
3.60
Vpp
-
Vrms
HPG bit = “0”, −3dBFS, HVDD=3.3V, R_L=22.8Ω
60
70
HPG bit = “1”, −3dBFS, HVDD=5V, R_L=100Ω
-
80
HPG bit = “1”, 0dBFS, HVDD=3.3V, RL=16Ω (Po=62mW)
-
20
S/N
(A-weighted)
(Note 19)
80
90
(Note 20)
-
90
-
dBFS
-
dBFS
-
dBFS
-
dB
-
dB
Interchannel Isolation
(Note 19)
65
75
(Note 20)
-
80
-
dB
-
dB
Interchannel Gain Mismatch
(Note 19)
-
(Note 20)
-
0.1
0.8
dB
0.1
0.8
dB
Load Resistance
16
-
-
Ω
Load Capacitance
C1 in Figure 2
-
C2 in Figure 2
-
-
30
pF
-
300
pF
Note 17. Output voltage is proportional to AVDD voltage. Vout = 0.6 x AVDD (typ)@LOVL bit = “0”.
Note 18. Output voltage is proportional to AVDD voltage.
Vout = 0.6 x AVDD(typ)@HPG bit = “0”, 0.91 x AVDD(typ)@HPG bit = “1”.
Note 19. HPG bit = “0”, HVDD=3.3V, R_L=22.8Ω.
Note 20. HPG bit = “1”, HVDD=5V, R_L=100Ω.
HP-Amp
HPL/HPR pin
Measurement Point
47µF
6.8Ω
C1
0.22µF
10Ω
C2 ^16Ω
Figure 2. Headphone-Amp output circuit
MS0420-E-00
- 11 -
2005/09