AK4710 Datasheet, PDF (8/31 Pages) Asahi Kasei Microsystems – Low Power Single SCART Driver

[AK4710]
ANALOG CHARACTERISTICS (AUDIO)
(Ta=25°C; VP=12V, VD1=VD2=VVD =3.3V; Signal Frequency=1kHz; Measurement frequency=20Hz ∼ 20kHz; R_L
≥4.5kΩ; 0dB=2Vrms output; Volume=0dB, unless otherwise specified)
Parameter
min
typ
max
Units
Analog Input: (AINL+/AINL-/AINR-/AINR+ pins)
Analog Input Characteristics
Input Voltage (AIN+) − (AIN−),
(Note 7)
2.0
Vrms
Input Resistance
(AINL+, AINR+ pins)
85
120
kΩ
Input Resistance
(AINL-, AINR- pins)
85
120
-
kΩ
Stereo/Mono Output: (TVOUTL/TVOUTR pins) (Note 8)
Analog Output Characteristics
Volume Step Width
2.3
3.0
3.7
dB
THD+N
(at 2Vrms output, Note 10, Note 12)
−92
-80
dB
Dynamic Rang (−60dB Output, A-weighted, Note 10)
92
96
dB
S/N
(A-weighted, Note 10, Note 14)
92
96
dB
Interchannel Isolation
(Note 10, Note 11)
80
90
dB
Interchannel Gain Mismatch
(Note 10, Note 11)
-0.5
0
+0.5
dB
DC offset
(Note 13)
-5
0
+5
mV
Gain Drift
-
200
-
ppm/°C
Load Resistance
TVOUTL/R
4.5
kΩ
Load Capacitance
TVOUTL/R
20
pF
Output Voltage
(Note 9)
1.8
2
2.2
Vrms
Power Supply Rejection (PSR)
(Note 15)
-
50
dB
Note 7. f = 1kHz, THD+N < -80dB, gain = 0dB(Volume=0dB)
Note 8. Measured by Audio Precision System Two Cascade.
Note 9. The output level of the internal AMP with volume should be less than 2Vrms.
Note 10. Analog In to TVOUT. Path : AINL+/− → TVOUTL, AINR+/− → TVOUTR,Volume0dB.
At 2Vrms single input, TDH+N is -91dB (typ), on path AINL+ → TVOUTL, AINR+ → TVOUTR,
Volume=0dB
Note 11. Between TVOUTL and TVOUTR with analog inputs AINL+/−, AINL/R+/−, 1kHz/0dB.
Inter-channel crosstalk is -80dB (typ), at 20Hz~20kHz other than 1kHz.
Note 12. -79dB (typ) referred to 0.5Vrms output level at Volume=+24dB
: path = AIN+/- → TVOUT.
Note 13. Analog In to TVOUT. Volume=0dB
Path : AINL+/− → TVOUTL, AINR+/− → TVOUTR
Note 14. 82dB (typ) referred to 0.5Vrms output level at Volume=+24dB
: path = AIN+/- → TVOUT.
84dB (typ), referred to 0.5Vrm output level at Volume = +21dB.
Note 15. The PSR is applied to VD1 and VD2 with 1kHz, 100mV.
Rev. 0.3
2011/07
-8-