AK4373 Datasheet, PDF (11/98 Pages) Asahi Kasei Microsystems – Low Power Stereo DAC with HP/SPK-Amp

[AK4373]
ANALOG CHARACTERISTICS
(Ta=25°C; AVDD=DVDD=HVDD=3.3V; VSS1=VSS2=VSS3=0V; fs=44.1kHz, BICK=64fs;
Signal Frequency=1kHz; 24bit Data; Measurement frequency=20Hz ∼ 20kHz; unless otherwise specified)
Parameter
min
typ
max
Units
DAC Characteristics:
Resolution
-
-
24
Bits
Stereo Line Output Characteristics: DAC → LOUT/ROUT pins, Single-ended mode (Figure 4), HPBTL bit = “0”,
PSEUDO bit = “0”, HPG bit = “0”, HVDD=3.3V, C=1µF, R_L=10kΩ, ALC=OFF,
AVOL=0dB, DVOL=0dB; unless otherwise specified.
Output Voltage (0dBFS) (Note 11)
1.78
1.98
2.18
Vpp
S/(N+D) (0dBFS)
-
77
-
dB
S/N (A-weighted)
86
96
-
dB
Interchannel Isolation
60
80
-
dB
Load Resistance
RL
10
-
-
kΩ
Load Capacitance
C1
-
-
30
pF
Note 11. Output voltage is proportional to AVDD voltage. Vout = 0.6 x AVDD (typ).
Line-Amp
LOUT/ROUT
Measurement
pin
C
Point
C1
RL
Figure 4. Line-Amp output circuit
Parameter
min
typ
max
Units
Headphone-Amp Characteristics: DAC → HPL/HPR pins, Single-ended mode (Figure 5), HPBTL bit = “0”,
PSEUDO bit = “0”, HPG bit = “0”, HVDD=3.3V, C=47µF, R_L=22.8Ω, ALC=OFF,
AVOL=0dB, DVOL=0dB; unless otherwise specified.
Output Voltage (Note 12) 0dBFS
1.58
1.98
2.38
Vpp
0dBFS (Note 13)
-
3.00
-
Vpp
0dBFS (Note 14)
-
1.02
-
Vrms
S/(N+D)
−3dBFS
50
60
-
dB
−3dBFS (Note 13)
-
65
-
dB
0dBFS (Note 14)
-
20
-
dB
S/N (A-weighted)
(Note 13)
86
96
-
96
-
dB
-
dB
Interchannel Isolation
60
75
-
dB
Interchannel Gain Mismatch
-
0
0.8
dB
Load Resistance
Load Capacitance
R_L=R1+R2
C1
16
-
-
-
-
Ω
30
pF
C2
-
-
300
pF
Note 12. 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 13. HPG bit = “1”, HVDD=3.8V, C=47µF, R_L=100Ω.
Note 14. HPG bit = “1”, HVDD=3.3V, C=47µF, R_L=16Ω.
MS0991-E-00
- 11 -
2008/09