AK4537 Datasheet, PDF (9/76 Pages) Asahi Kasei Microsystems – 16-Bit ΔΣ Stereo CODEC with MIC/HP/SPK-AMP

ASAHI KASEI
[AK4537]
Parameter
min
typ
max
Mono Line Output Characteristics: R_L=20kΩ, DAC → MOUT+/MOUT-
Output Voltage (Note 10) MOGN=1, -17dB
-
0.31
-
MOGN=0, +6dB
3.56
3.96
4.36
S/(N+D)
(-3dBFS) MOGN=1, -17dB
-
76
-
MOGN=0, +6dB
79
89
-
S/N
(A-weighted)
MOGN=1, -17dB
-
79
-
MOGN=0, +6dB
85
95
-
Load Resistance
MOGN=1, -17dB
2
-
-
MOGN=0, +6dB
20
-
-
Load Capacitance
-
-
30
Headphone-Amp Characteristics: R_L=22.8Ω, DAC → HPL/HPR, DATT=0dB
Output Voltage (Note 11)
1.54
1.92
2.30
S/(N+D)
(−3dBFS)
60
70
-
S/N
(A-weighted)
80
90
-
Interchannel Isolation
70
85
-
Interchannel Gain Mismatch
-
0.1
0.5
Load Resistance
20
-
-
Load Capacitance
(C1 in Figure 2)
-
-
30
(C2 in Figure 2)
-
-
300
Speaker-Amp Characteristics: R_L=8Ω, BTL, DAC → MOUT2 → MIN → SPP/SPN, ALC2=OFF
Output Voltage
SPKG= “0” (Po=150mW)
2.47
3.09
3.71
(Note 12) SPKG= “1” (Po=300mW)
-
4.38
-
SPKG= “0” (Po=150mW)
50
64
-
S/(N+D)
SPKG= “1” (Po=300mW)
-
20
-
(Po=250mW)
-
60
-
S/N
(A-weighted)
82
90
-
Load Resistance
8
-
-
Load Capacitance
-
-
30
Units
Vpp
Vpp
dBFS
dBFS
dB
dB
kΩ
kΩ
pF
Vpp
dBFS
dB
dB
dB
Ω
pF
pF
Vpp
Vpp
dB
dB
dB
dB
Ω
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.
HP-Amp
HPL/HPR pin
47µF
6.8Ω
C1
C2 ^16Ω
Figure 2. Headphone-amp output circuit
MS0202-E-04
-9-
2005/04