[AK4709]
ANALOG CHARACTERISTICS (AUDIO)
(Ta=25°C; VP=12V, VD1=VD2=VVD1=VVD2=3.3V; Signal Frequency=1kHz; Measurement frequency=20Hz ∼
20kHz; RL ≥4.5kΩ; 0dB=2Vrms output; Volume#0=Volume#1=0dB, unless otherwise specified)
Parameter
min
100
80
typ
150
125
max
Units
Analog Input: (TVINL/TVINR/VCRINL/VCRINR pins)
Analog Input Characteristics
Input Voltage
Input Resistance
(Note 6)
2.0
-
Vrms
kΩ
Analog Input: (AINL+/AINL-/AINR-/AINR+ pins)
Analog Input Characteristics
2.0
Vrms
kΩ
Input Voltage
Input Resistance
(AIN+) − (AIN−),
(Note 6)
Stereo/Mono Output: (TVOUTL/TVOUTR/VCROUTL/VCROUTR pins)
(Note 7)
Analog Output Characteristics
Volume#0 Step Width
Volume#1 Step Width (+6dB to –12dB)
(-12dB to –40dB)
2.3
3.0
2
2
2
−95
99
3.7
2.4
3.5
3.9
−84
dB
dB
dB
dB
dB
dB
1.6
0.5
0.1
(-40dB to –60dB)
THD+N (at 2Vrms, Note 9, Note 10, Note 11)
Dynamic Range (−60dB Output, A-weighted, Note 9)
S/N (A-weighted)
92
(2Vrms output , Vo1#0=Vo1#1=0dB, Note 9, Note 13)
92
80
-0.5
-5
99
110
0
0
200
dB
dB
dB
mV
ppm/°C
Interchannel Isolation
Interchannel Gain Mismatch
DC offset
(Note 9, Note 12)
(Note 9, Note 12)
(Note 14)
+0.5
+5
-
Gain Drift
-
Load Resistance
TVOUTL/R, VCROUTL/R
4.5
kΩ
Load Capacitance
TVOUTL/R, VCROUTL/R
Output Voltage
Power Supply Rejection (PSR)
20
2.15
pF
Vrms
dB
(Note 8)
(Note 15)
1.85
-
2
50
Note 6. f = 1kHz, THD+N < -80dB, gain = 0dB(Volume#0=Volume#1=0dB)
Note 7. Measured by Audio Precision System Two Cascade.
Note 8. The output level of the internal AMP with volume #0 should be less than 2Vrms.
The output level must be adjusted by the volume #1 when output level of the AK4709 exceeds 2Vrms.
The audio output must not exceed 2.15Vrms.
Note 9. Analog In to TVOUT/VCROUT.
Path: AINL+/- → TVOUTL, AINR+/- → TVOUTR, AINL+/- → VCROUTL, AINR+/- → VCROUTR
Volume#0=Volume#1=0dB.
Note 10. Differential Input. -86dB(typ) at VD= 3.13V
When single-ended Input,-90dB(typ) at f = 1kHz. -75dB(typ) at f = 10kHz
Note 11. -78dB (typ) referred to 0.5Vrms output level at Volume#0=+24dB, Volume#1= 0dB.
-80dB (typ) reffered to 0.5Vrms output level at Volume#0 = +21dB, Volume#1=0dB
Path: AINL+/- → TVOUTL, AINR+/- → TVOUTR, AINL+/- → VCROUTL, AINR+/- → VCROUTR
Note 12. Between TVOUTL and TVOUTR with analog inputs AINL+/−, AINL/R+/−, 1kHz/0dB.
Note 13. Analog In to TVOUT/VCROUT.
Path: AINL+/- → TVOUTL, AINR+/- → TVOUTR, AINL+/- → VCROUTL, AINR+/- → VCROUTR
81dB (typ) volume#0 = +24dB, Volume#1= 0dB
83dB (typ) volume#0 = +21dB, Volume#1= 0dB
Note 14. Analog In to TVOUT. Volume#0=Volume#1=0dB
Path: AINL+/- → TVOUTL, AINR+/- → TVOUTR, VCRINL → TVOUTL, VCRINR → TVOUTR
Note 15. The PSR is applied to VD1 and VD2 with 1kHz, 100mV.
MS1319-E-00
2011/07
- 10 -
AKM [ ASAHI KASEI MICROSYSTEMS ]
