AK4691 Datasheet, PDF (10/80 Pages) Asahi Kasei Microsystems – 4ch ADC + 2ch DAC with MIC/HP/SPK-AMP

[AK4691]
Parameter
min
typ
max
Units
DAC Analog Output characteristics: DAC Æ LOUT/ROUT, IVOL=DVOL=LVOL=+0dB, ALC=OFF, R_L= 10kΩ
Resolution
-
-
16
bits
S/(N+D) (0dBFS)
76
85
-
dB
DR (-60dBFS, A-Weighted)
83
90
-
dB
S/N (A-Weighted)
83
90
-
dB
Output Voltage (Note 23)
-4.7
-3.9
-3.1
dBV
Interchannel Isolation
80
100
-
dB
Interchannel Gain Mismatch
-
-
0.5
dB
Load Resistance
10
-
-
kΩ
Load Capacitance (Note 22)
-
-
30
pF
Headphone-Amp Characteristics: DAC → HPL/HPR pins, ALC=OFF, IVOL=DVOL=0dB
Output Voltage (Note 24)
HPG bit = “0”, 0dBFS, LVDD=3.0V, R_L=22.8Ω
-5.8
-3.9
-2
dBV
HPG bit = “1”, 0dBFS, LVDD=3.3V, R_L=16Ω (Po=58mW)
-
-0.3
-
dBV
S/(N+D)
HPG bit = “0”, −3dBFS, LVDD=3.0V, R_L=22.8Ω
HPG bit = “1”, 0dBFS, LVDD=5.0V, R_L=100Ω
60
70
-
80
-
dBFS
-
dBFS
HPG bit = “1”, 0dBFS, LVDD=3.3V, R_L=16Ω (Po=58mW)
-
20
-
dBFS
S/N (A-weighted) (Note 25)
82
90
-
dB
Interchannel Isolation (Note 25)
65
75
-
dB
Interchannel Gain Mismatch (Note 25)
-
0.1
0.8
dB
Load Resistance
16
-
-
Ω
Load Capacitance
C1 in Figure 2
C2 in Figure 2
-
-
30
pF
-
-
300
pF
Note 22. When the output pin drives some capacitive load, some resistor should be added in series between output pin and
capacitive load.
Note 23. Output voltage is proportional to AVDD voltage. LOUT, ROUT = typ. (0.6 x AVDD) Vpp @LVOL = 0dB.
Note 24. Output voltage is proportional to AVDD voltage.
HPL, HPR = typ. (0.6 x AVDD) Vpp @ HPG bit = “0”, typ. (0.91 x AVDD) Vpp @ HPG bit = “1”.
Note 25. HPG bit = “0”, LVDD=3.0V, R_L=22.8Ω.
HP-Amp
HPL/HPR pin
Measurement Point
47μF
6.8Ω
C1
0.22μF
10Ω
C2 ^16Ω
* 0dBV = 1Vrms = 2.83Vpp
Figure 2. Headphone-Amp output circuit
MS0672-E-00
- 10 -
2007/11