[AK4679]
Parameter
min
typ
max
Unit
Headphone-Amp Characteristics: DAC(Stereo, Note 22) → HPL/HPR pins, ALC=OFF, IVOL=0dB, OVOL=0dB,
HPG=0dB, RL=32Ω
Output Voltage (Note 24)
1.44
1.6
1.6
2.5
1.76
Vpp
Vpp
Vpp
0dBFS, RL = 32Ω, HPG=−4dB
0dBFS, RL = 16Ω, HPG=−4dB
0dBFS, RL = 32Ω, HPG=0dB
0dBFS, RL = 16Ω, HPG=0dB
-
-
-
-
-
-
0.85
Vrms
S/(N+D)
50
-
-
-
85
-
60
-
16
-
73
67
73
20
95
−106
80
0
-
-
-
-
-
-
-
dB
dB
dB
dB
dB
dBV
dB
dB
Ω
0dBFS, RL = 32Ω, HPG=−4dB
0dBFS, RL = 16Ω, HPG=−4dB
0dBFS, RL = 32Ω HPG=0dB
0dBFS, RL = 16Ω HPG=0dB
S/N (A-weighted)
Output Noise Level (A-weighted, HPG=−14dB)
Interchannel Isolation
Interchannel Gain Mismatch
Load Resistance
0.8
-
300
32
-
Load Capacitance (Note 25)
PSRR (Note 26)
pF
217Hz
1kHz
DC-offset (HPG ≤ −4dB)
-
-
−1
70
60
0
-
-
1
dB
dB
mV
Speaker-Amp Characteristics: DAC(stereo, Note 27) → SPP/SPN pins, ALC=OFF, IVOL=0dB, OVOL=0dB,
SPKG=−6dB, RL=8Ω + 10μH
Output Power
SVDD=5.0V, THD+N = 10%
SVDD=4.2V, THD+N = 10%
SVDD=4.2V, THD+N = 1%
SVDD=3.7V, THD+N = 1%
Output Voltage (−3dBFS) (Note 28)
S/(N+D) (SVDD=3.7V, Po=0.35W)
Output Noise Level (A-weighted) (Note 29)
Load Resistance
-
-
-
1.57
1.1
0.89
0.69
5.4
59
-
-
-
-
6.2
-
W
W
W
-
W
5.0
40
-
Vpp
dB
dBV
Ω
−82
-
−73
-
8
Load Capacitance (Note 25)
PSRR (Note 30)
-
-
300
pF
217Hz
1kHz
DC-offset
Current Limit (Note 31)
-
-
63
63
0
-
-
10
80
dB
dB
mV
mA
−10
-
40
Note 24. The Output voltage is proportional to AVDD voltage. Vout = 1.4 x AVDD Vpp(typ).
Po = 10mW @ 32Ω, Vout = 1.6Vpp. Po = 25mW @ 32Ω, Vout = 2.5Vpp.
Po = 20mW @ 16Ω, Vout = 1.6Vpp. Po = 45mW @ 16Ω, Vout = 0.85Vrms.
Note 25. Load Capacitance for VSS1.
Note 26. PSRR is referred to PVDD with 200mVpp sine wave.
Note 27. Input signal of left and right channels is same phase and level.
Note 28. Output voltage is proportional to AVDD voltage. Vout = (SPP) – (SPN) = 3.0 x AVDD Vpp(typ).
Note 29. In case of mono signal input (e.g. Lch only) and SPKG=0dB, output noise level is -84dBV.
Note 30. PSRR is referred to SVDD with 200mVpp sine wave.
Note 31. The average current between SVDD and VSS3 when the SPP and SPN pins are shorted and output power is
890mW.
MS1402-E-06
2013/02
- 16 -
AKM [ ASAHI KASEI MICROSYSTEMS ]
