AK4649 Datasheet, PDF (9/96 Pages) Asahi Kasei Microsystems – 24bit Stereo CODEC with MIC/SPK-AMP

[AK4649]
Parameter
min
typ
max
Units
DAC Characteristics:
Resolution
-
-
24
Bits
Stereo Line Output Characteristics: DAC → LOUT, ROUT pins, ALC=OFF, DVOL=OVOL=DATT=0dB,
LOVL1-0 bit = “00”, R_L=10kΩ
Output Voltage (Note 13) LOVL1-0 bit = “00”
2.08
2.31
2.54
Vpp
LOVL1-0 bit = “01”
2.62
2.91
3.20
Vpp
S/(N+D) (−3dBFS)
77
87
-
dBFS
S/N
(A-weighted)
87
97
-
dB
Interchannel Isolation
85
100
-
dB
Interchannel Gain Mismatch
-
0
0.8
dB
Load Resistance
10
-
-
kΩ
Load Capacitance
-
-
30
pF
Speaker-Amp Characteristics: DAC → SPP/SPN pins, ALC=OFF, DVOL=OVOL=DATT=0dB, R_L=8Ω, BTL
Output Voltage (Note 14)
SPKG1-0 bits = “00”, −0.5dBFS (Po=150mW)
-
3.18
-
Vpp
SPKG1-0 bits = “01”, −0.5dBFS (Po=250mW)
3.20
4.00
4.80
Vpp
SPKG1-0 bits = “10”, −0.5dBFS (Po=400mW)
-
1.79
-
Vrms
S/(N+D)
SPKG1-0 bits = “00”, −0.5dBFS (Po=150mW)
-
60
-
dB
SPKG1-0 bits = “01”, −0.5dBFS (Po=250mW)
20
50
-
dB
SPKG1-0 bits = “10”, −0.5dBFS (Po=400mW)
-
20
-
dB
S/N (A-weighted)
88
98
-
dB
Load Resistance
8
-
-
Ω
Load Capacitance
-
-
30
pF
Note 13. Output voltage is proportional to AVDD voltage. Vout = 0.7 x AVDD (typ) @LOVL1-0 bit = “00”.
Note 14. Output voltage is proportional to AVDD voltage.
In case of Full-differential (DAC Input Level = 0dBFS), Vout = 1.02 x AVDD (typ) @SPKG1-0 bits = “00”,
1.28 x AVDD (typ) @SPKG1-0 bits = “01”, 1.62 x AVDD (typ ) @ SPKG1-0 bits = “10”.
The output level is calculated by assuming that output signal is no clipped. In the actual case, output signal may
be clipped when DAC outputs 0dBFS signal. Therefore, DAC output level should be set to lower level by setting
digital volume so that Speaker-Amp output level is not clipped.
MS1023-E-01
-9-
2010/08