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