AK4709 Datasheet, PDF (10/42 Pages) Asahi Kasei Microsystems – Low Power AV SCART Switch

[AK4709]
ANALOG CHARACTERISTICS (AUDIO)
(Ta=25°C; VP=12V, VD1=VD2=VVD1=VVD2=3.3V; Signal Frequency=1kHz; Measurement frequency=20Hz ∼
20kHz; R_L ≥4.5kΩ; 0dB=2Vrms output; Volume#0=Volume#1=0dB, unless otherwise specified)
Parameter
min
typ
max Units
Analog Input: (TVINL/TVINR/VCRINL/VCRINR pins)
Analog Input Characteristics
Input Voltage
(Note 6)
2.0
Vrms
Input Resistance
100
150
-
kΩ
Analog Input: (AINL+/AINL-/AINR-/AINR+ pins)
Analog Input Characteristics
Input Voltage (AIN+) − (AIN−),
(Note 6)
2.0
Vrms
Input Resistance
80
125
kΩ
Stereo/Mono Output: (TVOUTL/TVOUTR/VCROUTL/VCROUTR pins) (Note 7)
Analog Output Characteristics
Volume#0 Step Width
2.3
3.0
3.7
dB
Volume#1 Step Width (+6dB to –12dB)
1.6
2
2.4
dB
(-12dB to –40dB)
0.5
2
3.5
dB
(-40dB to –60dB)
0.1
2
3.9
dB
THD+N (at 2Vrms, Note 9, Note 10, Note 11)
−95
−84
dB
Dynamic Range (−60dB Output, A-weighted, Note 9)
92
99
dB
S/N (A-weighted)
(2Vrms output , Vo1#0=Vo1#1=0dB, Note 9, Note 13)
92
99
dB
Interchannel Isolation
(Note 9, Note 12)
80
110
dB
Interchannel Gain Mismatch
(Note 9, Note 12)
-0.5
0
+0.5
dB
DC offset
(Note 14)
-5
0
+5
mV
Gain Drift
-
200
-
ppm/°C
Load Resistance
TVOUTL/R, VCROUTL/R
4.5
kΩ
Load Capacitance
TVOUTL/R, VCROUTL/R
20
pF
Output Voltage
(Note 8)
1.85
2
2.15 Vrms
Power Supply Rejection (PSR)
(Note 15)
-
50
dB
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
- 10 -
2011/07