[AK4671]
HP-Amp
LOUT2 pin
ROUT2 pin
MeasurementPoint
100μ
F
16Ω
C1
0.22μF
C2
10Ω
Figure 2. Headphone-Amp output circuit
Parameter
min
typ
max
Units
Mono Line Output Characteristics: Stereo DAC → LOP/LON pins, ALC=OFF, IVOL=0dB, OVOL=0dB,
L3VL=0dB, LODIF bit = “1”, RL=10kΩ for each pin (Full-differential)
Output Voltage (Note 20)
S/(N+D) (0dBFS)
S/N (A-weighted)
Load Resistance (LOP/LON pins, respectively)
Load Capacitance (LOP/LON pins, respectively)
(Note 21)
3.52
75
85
3.96
85
95
-
4.36
Vpp
dB
dB
-
-
-
10
kΩ
-
-
30
pF
Single-ended Line Input: LIN1/RIN1/LIN2/RIN2/LIN3/RIN3/LIN4/RIN4 pins;
(MDIF1=MDIF2=MDIF3=MDIF4 bits = “0”)
Maximum Input Voltage (Note 22)
Gain
-
1.98
-
Vpp
InputÆLOUT1/ROUT1/LOUT2/ROUT2/LOUT3/ROUT3 (LODIF=RCV bits = “0”)
0
+1
-
dB
dB
−1
Input Æ RCP/RCN/LOP/LON (LODIF=RCV bits = “1”)
-
+6
Full-differential Line Input: IN1+/−, IN2+/−, IN3+/−, IN4+/− pins;
(MDIF1=MDIF2=MDIF3=MDIF4 bits = “1”)
Maximum Input Voltage (Note 23)
Gain
-
1.98
-
Vpp
InputÆLOUT1/ROUT1/LOUT2/ROUT2/LOUT3/ROUT3 (LODIF=RCV bits = “0”)
0
+1
-
dB
dB
−1
Input Æ RCP/RCN/LOP/LON (LODIF=RCV bits = “1”, Note 24)
-
+6
Power Supply Current:
Power Up (PDN pin = “H”, All Circuits Power-up)
(Note 25)
(Note 26)
(Note 27)
-
-
-
21
23
8
-
30
12
mA
mA
mA
AVDD+PVDD+DVDD
+TVDD2+TVDD3+SAVDD
Power Down (PDN pin = “L”) (Note 28)
AVDD+PVDD+DVDD
-
1
30
μA
+TVDD2+TVDD3+SAVDD
Note 20. Output voltage is proportional to AVDD voltage. Vout = (LOP) − (LON) = 1.2 x AVDD (typ).
Note 21. Load Capacitance for VSS1.
Note 22. Maximum Input voltage which analog output does not clip is proportional to AVDD voltage. Vin = 0.6 x AVDD
(typ).
Note 23. Maximum Input voltage which analog output does not clip is proportional to AVDD voltage. Vin = (IN4+) −
(IN4−) = 0.6 x AVDD (typ).
Note 24. Vout = (RCP) − (RCN) at RCV bit = “1”, Vout = (LOP) − (LON) at LODIF bit = “1”.
Note 25. EXT Slave Mode and LP bit = “0”, fs=44.1kHz, PMMICL = PMMICR = PMADL = PMADR = PMDAL =
PMDAR = PMLO1 = PMRO1 = PMLO2 = PMRO2 = PMLO2S = PMRO2S = PMLO3 = PMRO3 =PMSAD =
MS0666-E-02
2010/06
- 10 -
AKM [ ASAHI KASEI MICROSYSTEMS ]
