AK4955 Datasheet, PDF (9/117 Pages) Asahi Kasei Microsystems – 24bit Stereo CODEC with MIC/SPK/Cap-less VIDEO-AMP/ LDO & DSP

[AK4955]
Parameter
min
typ
max
Unit
DAC Characteristics:
Resolution
-
-
24
Bits
Stereo Line Output Characteristics: DAC → LOUT, ROUT pins, ALC=OFF, DVOL=OVOL =0dB,
R_L=10kΩ , PMBP bit = “0”, LVCM1-0 bits = “00”
LVCM1-0 bits = “00” (Note 14)
1.94
2.16
2.38
Vpp
Output Voltage
LVCM1-0 bits = “01” (Note 15)
2.27
LVCM1-0 bits = “10” (Note 16)
3.02
2.52
2.77
Vpp
3.36
3.70
Vpp
LVCM1-0 bits = “11”(Note 17)
3.40
3.78
4.16
Vpp
S/(N+D) (−3dBFS) (Note 14, Note 15)
75
85
-
dB
S/N (A-weighted)
82
92
-
dB
Interchannel Isolation
85
100
-
dB
Interchannel Gain Mismatch
-
0
0.8
dB
Load Resistance
10
-
-
kΩ
Load Capacitance
-
-
30
pF
PSRR (fin = 1kHz)
-
80
-
dB
Speaker-Amp Characteristics: DAC → SPP/SPN pins, ALC=OFF, DVOL=OVOL =0dB, R_L=8Ω, BTL
Output Voltage
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)
SPKG1-0 bits = “11” −0.5dBFS
(Po=600mW, SVDD = 4.8V)
-
1.79
-
Vrms
-
2.19
-
Vrms
S/(N+D)
SPKG1-0 bits = “00”, −0.5dBFS (Po=150mW)
-
70
-
dB
SPKG1-0 bits = “01”, −0.5dBFS (Po=250mW)
20
60
-
dB
SPKG1-0 bits = “10”, −0.5dBFS (Po=400mW)
SPKG1-0 bits = “11” −0.5dBFS
(Po=600mW, SVDD = 4.8V)
-
20
-
dB
-
20
-
dB
S/N
SPKG1-0 bits = “01”, −0.5dBFS (Po=250mW)
(A-weighted)
Load Resistance
85
95
6.8
-
-
dB
-
Ω
Load Capacitance
-
-
30
pF
PSRR (fin = 1kHz)
-
60
-
dB
Note 14. LVDD must be in the range of 2.7V~5.5V when LVCM1-0 bits = “00”. The common voltage is typ. 1.30V.
Note 15. LVDD must be in the range of 3.0V~5.5V when LVCM1-0 bits = “01”. The common voltage is typ. 1.42V.
Note 16. LVDD must be in the range of 4.0V~5.5V when LVCM1-0 bits = “10”. The common voltage is typ. 1.92V.
Note 17. LVDD must be in the range of 4.5V~5.5V when LVCM1-0 bits = “11”. The common voltage is typ. 2.10V.
MS1343-E-00
-9-
2011/12