AK4373 Datasheet, PDF (12/98 Pages) Asahi Kasei Microsystems – Low Power Stereo DAC with HP/SPK-Amp

HP-Amp
HPL/HPR
pin
C1
Measurement
Point
C _R1
C2 ^R2
[AK4373]
Figure 5. HP-Amp Output Circuit in single-ended mode
Parameter
min
typ
max
Units
Headphone-Amp Characteristics: DAC → HPL+/-, HPR+/- pins, Differential mode(Figure 6), HPBTL bit = “1”,
PSEUDO bit = “0” , HPG bit = “0”, HVDD=3.3V, R_L=32Ω, ALC=OFF,
AVOL=0dB, DVOL=0dB; unless otherwise specified.
Output Voltage (Note 15)
0dBFS
-
3.96
-
Vpp
0dBFS (Note 16)
-
2.05
-
Vrms
S/(N+D)
−3dBFS
-
60
-
dB
0dBFS (Note 16)
-
20
-
dB
S/N (A-weighted)
-
96
-
dB
Interchannel Isolation
-
75
-
dB
Interchannel Gain Mismatch
-
0.2
-
dB
Load Resistance
R_L =2 x R1 + R2
16
-
Load Capacitance
C1
-
-
-
Ω
30
pF
C2
-
-
300
pF
Note 15. Output voltage is proportional to AVDD voltage.
Vout = 1.2 x AVDD(typ)@HPG bit = “0”, 1.82 x AVDD(typ)@HPG bit = “1”.
Note 16. HPG bit = “1”, HVDD=3.3V, R_L=32Ω.
HP-Amp
HP-Amp
HPL+/HPR+
pin
R1
C1
Measurement
Point
HPL-/HPR-
pin
R1
C1
C2
R2
C2
Figure 6. HP-Amp Output Circuit in differential mode
MS0991-E-00
- 12 -
2008/09