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ASAHI KASEI
[AK4537]
MS0202-E-04
2005/04
-
9
-
Parameter
min typ max
Units
Mono Line Output Characteristics: R
L
=20k
:
, DAC
o
MOUT+/MOUT-
Output Voltage
(Note 10)
MOGN=1, -17dB
-
0.31
-
Vpp
MOGN=0,
+6dB
3.56 3.96 4.36
Vpp
S/(N+D) (-3dBFS)
MOGN=1,
-17dB
- 76 -
dBFS
MOGN=0,
+6dB
79 89 -
dBFS
S/N (A-weighted) MOGN=1,
-17dB
- 79 -
dB
MOGN=0,
+6dB
85 95 -
dB
Load Resistance
MOGN=1, -17dB
2
-
-
k
:
MOGN=0,
+6dB
20
-
-
k
:
Load Capacitance
-
-
30
pF
Headphone-Amp Characteristics: R
L
=22.8
:
, DAC
o
HPL/HPR, DATT=0dB
Output Voltage
(Note 11)
1.54
1.92
2.30
Vpp
S/(N+D)
(
3dBFS)
60 70 -
dBFS
S/N (A-weighted)
80 90 -
dB
Interchannel Isolation
70
85
-
dB
Interchannel Gain Mismatch
-
0.1
0.5
dB
Load Resistance
20
-
-
:
Load Capacitance
(C1 in Figure 2)
-
-
30
pF
(C2 in Figure 2)
-
-
300
pF
Speaker-Amp Characteristics: R
L
=8
:
, BTL, DAC
o
MOUT2
o
MIN
o
SPP/SPN, ALC2=OFF
Output Voltage
SPKG= “0” (Po=150mW)
2.47
3.09
3.71
Vpp
(Note 12)
SPKG= “1” (Po=300mW)
-
4.38
-
Vpp
SPKG= “0” (Po=150mW)
50
64
-
dB
SPKG=
“1”
(Po=300mW)
- 20 -
dB
S/(N+D)
(Po=250mW)
- 60 -
dB
S/N (A-weighted)
82 90 -
dB
Load Resistance
8
-
-
:
Load Capacitance
-
-
30
pF
Note 10. Output voltage is proportional to AVDD voltage. Vout = 1.2 x AVDD at Full-differential output.
Vout = 0.6 x AVDD at Single-end Output.
Note 11. Output voltage is proportional to AVDD voltage. Vout = 0.582 x AVDD.
Note 12. Output voltage is proportional to AVDD voltage.
Vout = 0.936 x AVDD(typ)@SPKG= “0”, 1.327 x AVDD(typ)@SPKG= “1” at Full-differential output.
HPL/HPR pin
HP-Amp
47
P
F
C1
xxxx
xxxx
xxxx
xxxx
xxxx
xxxx
xxxx
xxxx
xxxx
xxxx
xxxx
xxxx
16
:
C2
6.8
:
Figure 2. Headphone-amp output circuit
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